An Emergency Medicine Broadsheet
·Phoenix·
Est. MMXXVI
Blue Fish Med · Today's Topic
Mass Gathering Medicine and Triage
Mass gatherings can overwhelm EMS and ED flow in minutes. A bad triage decision delays care for the sickest patients and can turn a manageable scene into a preventable disaster.
By the Blue Fish Med DeskJun 17, 2026 · Phoenix
0:00 / –:––AI‑generated audio
It’s 9:17 p.m., and a 27-year-old man in a sun-faded concert tee keeps saying, “I’m fine,” while sweat beads on his upper lip and his phone screen flashes dead in his hand. Around him, the triage tent is a blur of dust, shouting, and ambulance lights; one teenager is clutching an ankle, another is staring blankly into the middle distance, and a woman nearby is vomiting into a trash bin. The crowd is larger than the street outside the hospital has ever been. The question isn’t what the diagnosis is. It’s who gets moved first, and who can safely wait.
— What’s your move? Read on.
Before you read
What do you do first when the scene itself may be the hazard?
Which patients are truly unstable versus just loud, anxious, or injured?
When to Think of It
Think mass gathering medicine when you see a sudden surge: concert, marathon, parade, protest, disaster shelter, sports event, pilgrimage, or school event with clustered illness/injury. Triggers include heat illness, intoxication, crowd crush, panic, trauma, communicable disease, and delayed access to care.
Sick or Not Sick
The one call that matters most: Is there an immediate life threat that requires bypassing routine triage and moving to resuscitation or scene-level extraction now? If yes, that patient becomes a priority one transport or ED resuscitation. If no, the patient enters the triage stream and gets reassessed repeatedly because status changes fast.
The First Fifteen Minutes
Scene safety / incident command activation → establish zones, stop traffic flow, request additional EMS and ED resources, because a chaotic scene kills rescuers and delays the sick.
Directing bystanders / basic first aid → simple wound pressure, sitting/lying overheated patients down, oral fluids if safe, because low-acuity care should not consume critical resources.
Rapid triage with a system such as START or JumpSTART → immediate walk-by assessment, because objective sorting prevents emotion-driven decisions.
Hypoglycemia or altered mental status with glucose low/unknown in a symptomatic patient → dextrose 25 g IV (e.g., D50W 50 mL IV) in adults, because reversibility is fast and high-yield; if no IV, glucagon 1 mg IM/IN while access is obtained.
Agitated patient threatening self/others and nonpharmacologic control fails → haloperidol 5–10 mg IM or droperidol 5–10 mg IM (or per local protocol), because chemical sedation can make triage and transport possible; monitor QT and airway. Dose variability exists—check institutional protocol if uncertain.
Severe heat illness / hyperthermia with altered mentation → aggressive external cooling (ice-water immersion if feasible; otherwise evaporative + ice packs), because temperature reduction is the definitive life-saving move.
Shock physiology on the scene → large-bore IV/IO access and balanced isotonic fluids while arranging priority transport, because perfusion support buys time, not cure.
Suspected anaphylaxis → epinephrine 0.3–0.5 mg IM (1 mg/mL solution) immediately, because it reverses airway edema and distributive shock.
Oxygen only if hypoxemic or in respiratory distress → titrate to need, because indiscriminate oxygen is not the intervention; ventilation and transport are.
Definitive Care & Disposition
Definitive care is system coordination: hospital destination decisions, mutual aid, surge staffing, communications, and repeated triage as the event evolves. Admit or transfer patients based on physiology, not complaint severity. Low-acuity patients may be treated and released, but anyone with persistent abnormal vitals, altered mentation, exertional syncope, heat stroke, crush injury, or significant trauma needs ED evaluation and often observation or admission. Communicable disease concerns require isolation pathways and public health notification.
How This One Kills
The fatal error is treating triage as one-and-done. A patient who looks “okay” during the first pass can deteriorate seconds later from heat stroke, occult bleeding, intoxication, or crush physiology while staff focus on the loudest complaint.
The Differential — What Else Looks Like This
Panic attack — tachypnea and fear without objective hypoxia, hypotension, or altered perfusion; confusing it with shock delays lifesaving transport.
Intoxication — slurred speech and ataxia can hide head injury or heat illness; missing the real injury leads to deterioration in the crowd or after discharge.
Exertional heat exhaustion — normal mentation and stable core physiology vs heat stroke; confusing the two risks missing a cooling emergency.
Simple musculoskeletal injury — isolated pain/swelling with stable vitals; overtriage wastes scarce transport and ED capacity.
The Second-Day Story
In older adults, children, or partially treated patients, the scene may be deceptive: they may not look dramatic, but they decompensate quickly. Heat illness may present as confusion, weakness, or collapse rather than obvious hyperthermia; trauma may be hidden by intoxication, adrenaline, or crowd noise. The clue is mismatch between appearance and physiology—tachycardia, hypotension, altered mentation, abnormal temperature, or inability to ambulate should override “looks okay.”
Back to Our Patient
Back to our patient: the 27-year-old in the concert tee is not “just sweaty” — he’s in a mass gathering surge with potential heat illness, intoxication, or occult trauma. On rapid triage, his mental status, ambulation, skin temperature, and vital signs decide the fork: if he’s altered, hypotensive, or unable to cool down, he moves immediately to resuscitation and active cooling/transport; if he’s alert, normotensive, and simply exhausted, he stays in the triage stream with reassessment and hydration. The key is repeated objective checks, not reassurance by appearance. He ends up either a high-priority transport if unstable or a lower-acuity discharge/observe pathway if physiology remains normal.
Patient Presentation to Attending
How you’d present this patient on the floor — tight, pertinent positives and negatives, no rambling
“27-year-old man at a crowded concert with dizziness and feeling overheated. He’s been in line for several hours, has not been drinking much, and now looks flushed and sweaty; he denies chest pain, focal weakness, trauma, or loss of consciousness. On exam he’s awake, speaking in full sentences, tachycardic, and able to ambulate, with no focal neuro deficits and no obvious injuries. Vitals show mild tachycardia but no hypotension or hypoxia, and his point-of-care glucose is normal. My concern is heat illness versus intoxication versus occult trauma in a mass-casualty-style surge, but he currently has no red flags for immediate resuscitation. I’m going to move him through formal triage, get him cooled and orally rehydrated if he stays stable, and reassess vitals and mental status repeatedly; if he worsens, he goes straight to higher-acuity evaluation.”
Study Directive
Draw a 3-zone mass gathering layout from memory: hot/warm/cold zones, then place triage and transport flow on it.
Practice START and JumpSTART on five mock patients and time yourself to sort them in under 60 seconds each.
Write a one-page checklist for concert/marathon triage: heat illness, intoxication, trauma, hypoglycemia, anaphylaxis, communicable disease.
Rehearse a 30-second radio report for surge conditions: patient count, acuity, resource needs, and transport destinations.
Review your local EMS special events plan and identify who activates incident command, who tracks patients, and who coordinates destination distribution.
Prehospital trauma care is about preventing avoidable death from airway failure, tension physiology, hemorrhage, and delayed transport. The wrong field...
A 42-year-old construction worker lies in the gutter beside a crumpled ladder, his boot pinned under a bent step and a bright smear of blood tracking down his pant leg. He is pale but talking, breathing fast, and clenching his jaw as the siren closes in. One arm is held awkwardly against his chest; a coworker keeps saying he “just needs a minute.” The first move is not obvious, and the clock is already running.
Before You Read
Which injuries kill before the ambulance reaches the hospital?
What can and should be done in the field versus deferred?
When does a “stable” trauma patient become an immediate transport?
Why It Matters
Prehospital trauma care is about preventing avoidable death from airway failure, tension physiology, hemorrhage, and delayed transport. The wrong field intervention can waste time; the right one buys survival.
When to Think of It
Think prehospital trauma for blunt or penetrating injury, falls, MVCs, crush, burns, ejection, assault, blast, or entrapment. Red flags are altered mentation, respiratory distress, uncontrolled bleeding, hypotension, chest wall instability, suspected spinal cord injury, and multisystem trauma.
Sick or Not Sick
The one call that matters most: Does this patient need immediate life-saving intervention on scene before transport, or rapid load-and-go? Airway compromise, tension pneumothorax, exsanguinating hemorrhage, and entrapment with instability push toward immediate field intervention; everyone else should generally move toward rapid transport.
The First Fifteen Minutes
Manual cervical stabilization only when indicated by mechanism/exam → because indiscriminate immobilization can delay care and worsen airway access.
Airway obstruction or inability to protect airway → jaw thrust, suction, BVM with 100% oxygen, and if needed advanced airway per protocol, because hypoxia kills faster than most injuries.
External hemorrhage → direct pressure, wound packing, and tourniquet placement high and tight on extremity bleeding; use a commercial tourniquet and tighten until bleeding stops, because hemorrhage control is the fastest mortality reducer.
Suspected tension pneumothorax with respiratory distress/hypotension/unilateral absent breath sounds → needle decompression or finger thoracostomy per protocol, because it reverses obstructive shock.
Pelvic instability or suspected pelvic fracture with hypotension → pelvic binder applied at the level of the greater trochanters, because it reduces pelvic volume and venous bleeding.
Pain limiting breathing or movement → fentanyl 1–2 mcg/kg IV/IN/IM or ketamine 0.1–0.3 mg/kg IV for analgesia (protocol-dependent), because analgesia improves ventilation and extrication cooperation. Dose variability exists—check local protocol.
Seizure after head injury → benzodiazepine per protocol (e.g., midazolam 5 mg IM/IN/IV), because ongoing seizure worsens secondary brain injury.
Hypotension after trauma → permissive resuscitation when appropriate, rapid hemorrhage control, and balanced blood products if available, because overcrystalloid can worsen dilution and delay definitive care.
Definitive Care & Disposition
Definitive care is operative or procedural source control: surgery, embolization, chest tube, orthopedic stabilization, neurosurgical evaluation, or ICU-level monitoring. Destination should be a trauma center when criteria are met, with bypass based on mechanism, physiology, and local systems of care. Stable minor injuries may go to urgent care or ED, but multisystem trauma, major head injury, chest injury, abdominal pain with shock, or open fractures need trauma activation and admission.
How This One Kills
The fatal error is missing occult hemorrhage or tension physiology because the patient still talks. Compensated shock can look deceptively stable until sudden collapse, especially in young patients.
The Atypical Presentation
Older adults and anticoagulated patients may have minimal pain, minimal tachycardia, or delayed hypotension despite major bleeding. Children compensate until they suddenly crash; head-injured patients may have only vomiting, sleepiness, or irritability. If the mechanism is severe and the physiology looks “too okay,” assume the story is incomplete and keep looking for hidden hemorrhage, chest injury, or brain injury.
Back to Our Patient
Back to our patient: the construction worker’s pale face, fast breathing, and trapped-leg mechanism should trigger a rapid trauma assessment, not reassurance because he’s talking. If he has uncontrolled extremity bleeding, it gets a tourniquet or packing immediately; if he becomes hypotensive or has unilateral absent breath sounds, the field team treats hemorrhage or tension physiology on the spot before or during rapid transport. His awkward arm and blood trail raise concern for multisystem injury, so he needs trauma-center transport with ongoing reassessment. The right move is load-and-go with targeted lifesaving interventions, not prolonged scene workup.
Patient Presentation to Attending
“42-year-old male construction worker struck by a fall from a ladder with a trapped left leg and obvious extremity bleeding. He’s tachycardic, pale, and tachypneic but awake and speaking; he denies loss of consciousness, chest pain, or abdominal pain, and there’s no known anticoagulant use. On exam he has active leg bleeding controlled with pressure/tourniquet, asymmetric chest rise, and significant pain with no focal neuro deficit. Vitals show borderline blood pressure and persistent tachycardia, so I’m worried about occult hemorrhage and possible chest injury. I’m treating hemorrhage, reassessing airway and breathing, and arranging immediate trauma-center transport with prearrival notification.”
Study Directive
Practice a 60-second trauma scene survey: safety, number of patients, mechanism, airway, bleeding, breathing, circulation.
Memorize the indications for tourniquet, pelvic binder, and needle decompression, then recite them aloud.
Sketch the sequence “control hemorrhage → address airway/breathing → transport” from memory.
Review your service’s trauma destination criteria and memorize bypass triggers.
Run three radio reports: isolated extremity bleed, blunt polytrauma, and penetrating chest trauma.
Key Medications
Fentanyl: 1–2 mcg/kg IV/IN/IM for trauma pain; titrate carefully in hypotension.
Ketamine: 0.1–0.3 mg/kg IV for analgesia; dissociative doses for sedation are higher and protocol-dependent.
Midazolam: 2.5–5 mg IV/IM/IN for seizure or severe agitation; pediatric weight-based dosing is common.
Epinephrine: 0.3–0.5 mg IM for anaphylaxis if trauma is complicated by allergic airway compromise.
Tranexamic acid (TXA): 1 g IV over 10 minutes, ideally within 3 hours of injury for suspected significant hemorrhage; second 1 g infusion may follow per protocol. Benefit and timing are protocol-sensitive—confirm local practice.
Ketorolac: generally avoid in major trauma or bleeding risk. When uncertain about analgesia, sedation, or TXA timing, check institutional protocol or a dosing reference.
High-Yield Pearls
Talking does not equal perfusing in trauma; compensated shock is common and dangerous.
A pelvic binder goes at the greater trochanters, not the waist.
If you suspect tension pneumothorax and the patient is crashing, treat first and confirm later.
The Mimics
Simple fracture/sprain — normal perfusion and no major mechanism; confusing it with major trauma overloads resources.
Syncope after injury — transient collapse may reflect bleeding or chest injury; missing the cause can be fatal.
Panic/hyperventilation — tachypnea without shock, but only after you exclude bleeding and chest trauma.
Medical collapse mistaken for trauma — chest pain, arrhythmia, or seizure can precede the fall; anchoring on trauma delays the true diagnosis.
Board Question
A 19-year-old man is stabbed in the thigh. He is awake, pale, tachycardic, and has brisk bleeding from the wound. Which is the best first field intervention?
AApply a splint and wait for transport
BDirect pressure, wound packing, and a tourniquet if bleeding persists
CObtain a full set of vitals before touching the wound
DGive 2 liters of crystalloid immediately
Reveal answer
Correct: B
Direct pressure, wound packing, and a tourniquet if bleeding persists. Life-threatening extremity hemorrhage is controlled first, before imaging, splinting, or large-volume fluids. Rapid hemorrhage control is the intervention most likely to prevent death in the field.
Uncontrolled hemorrhage is one of the most preventable causes of early traumatic death. Prehospital bleeding control and select invasive interventions can...
A 58-year-old man in a white T-shirt is sitting upright on the sidewalk, pressing both hands hard into his groin after a fall in a parking lot. There’s a dark widening stain at the crotch seam, and every few breaths he winces and looks down to check it again. The EMS crew is already opening a kit; the question is whether this is simple compression or a bleed that needs something more aggressive before the doors open.
Before You Read
Which bleeding can be stopped outside the hospital, and how?
When does a patient need a vascular procedure or blood product rather than more fluid?
What invasive prehospital interventions actually change outcomes?
Why It Matters
Uncontrolled hemorrhage is one of the most preventable causes of early traumatic death. Prehospital bleeding control and select invasive interventions can bridge patients to definitive hemostasis and resuscitation.
When to Think of It
Think external hemorrhage, junctional bleeding, suspected massive internal hemorrhage, post-partum bleeding, GI bleed with shock, or traumatic arrest from blood loss. Look for soaking dressings, pulsatile bleeding, expanding hematoma, hypotension, tachycardia, pallor, altered mentation, and signs of poor perfusion.
Sick or Not Sick
The one call that matters most: Is this hemorrhage controllable with external measures, or is the patient in hemorrhagic shock requiring blood, rapid transport, and procedural rescue? If uncontrolled or physiologically crashing, escalation is immediate.
The First Fifteen Minutes
Direct pressure → constant firm pressure with gloved hands or dressing, because compression is the fastest universal hemostatic measure.
Wound packing with hemostatic gauze → pack deep wounds to the source and hold pressure for 3 minutes (or per product instructions), because it creates local tamponade where a tourniquet cannot reach.
Commercial tourniquet for extremity bleeding → place 5–7 cm above the wound or “high and tight” if the site is unclear; tighten until bleeding stops and distal pulse is absent. Reassess and document time, because time-to-control matters.
Pelvic binder for suspected pelvic fracture with shock → apply at the greater trochanters, because it reduces pelvic volume and venous bleeding.
TXA when significant traumatic hemorrhage is suspected and within 3 hours of injury → 1 g IV over 10 minutes; some protocols add a second 1 g infusion over 8 hours, because it inhibits fibrinolysis and may reduce death from bleeding.
Blood product resuscitation when available and indicated → packed RBCs and balanced products per protocol, because hemorrhagic shock responds better to blood than crystalloid.
Large-bore IV/IO access → 1–2 large-bore IVs or IO if access is delayed, because access enables blood and medication delivery.
Needle decompression/finger thoracostomy if tension physiology accompanies traumatic shock → because obstructive shock can coexist with hemorrhage and must be reversed immediately.
Airway control in exsanguinating patients with declining mental status → BVM and advanced airway per protocol, because blood loss rapidly removes airway protection.
Definitive Care & Disposition
Definitive care is operative or procedural hemostasis, interventional radiology, obstetric management, endoscopy, or ICU resuscitation with massive transfusion. Transport destination should favor centers capable of trauma surgery, blood bank access, and procedural intervention. Ongoing bleeding, shock, or need for invasive control mandates resuscitation bay/ICU and often massive transfusion protocol activation.
How This One Kills
The fatal error is relying on fluids alone and delaying hemorrhage control. Crystalloid may transiently improve a number while worsening dilution, hypothermia, and coagulopathy.
The Atypical Presentation
Internal bleeding can be hidden behind a deceptively quiet exterior: the patient may have only weakness, thirst, or mild tachycardia until collapse. Older adults, beta-blocked patients, and pregnant/postpartum patients may not mount classic tachycardia. Junctional bleeding from the groin, axilla, or neck may be missed because a tourniquet doesn’t fit, so pressure, packing, and rapid escalation are essential.
Back to Our Patient
Back to our patient: the groin stain and hand pressure make junctional hemorrhage the first concern, not a simple contusion. If the bleeding is compressible, the crew should pack and hold pressure; if it’s severe and not controlled, he needs rapid transport to a center with surgical capability and blood products, with TXA considered if within the treatment window and hemorrhagic shock is suspected. If he deteriorates or shows signs of tension physiology, that gets treated immediately in parallel. The endpoint is definitive hemostasis, not a prettier blood pressure on the curb.
Patient Presentation to Attending
“58-year-old man after a fall with ongoing groin bleeding and signs of blood loss. He’s pale, tachycardic, and increasingly lightheaded but still awake; no chest pain or focal neurologic deficits, and the bleeding is not from a simple superficial scrape. On exam he has a deep junctional wound with soaked dressings and no obvious control yet, and his perfusion looks poor. I’m concerned for hemorrhagic shock from junctional bleeding, with possible need for TXA and blood products depending on timing and transport setting. We’ve applied direct pressure and packing, are reassessing for other injuries, and I want immediate transport to a trauma-capable center with prearrival hemorrhage alert.”
Study Directive
Practice applying a tourniquet and packing a simulated junctional wound while timing yourself.
Memorize TXA indications, window, and standard dose; say them aloud without notes.
Review which bleeds are compressible, junctional, or internal, and build a three-column mental list.
Write a one-minute protocol for prehospital hemorrhagic shock: control, access, blood, transport.
Check local EMS options for blood carriage, TXA availability, and airway/decompression capability.
Key Medications
Tranexamic acid (TXA): 1 g IV over 10 minutes, ideally within 3 hours of injury; possible second 1 g over 8 hours per protocol.
Packed RBCs: per protocol, typically in balanced transfusion ratios in exsanguinating trauma.
Calcium chloride: 1 g IV for massive transfusion-related hypocalcemia if available/indicated; calcium gluconate 3 g IV is an alternative in some settings.
Norepinephrine: infusion per protocol for refractory shock after hemorrhage control and blood resuscitation; dose varies, titrate to MAP.
Fentanyl: 1–2 mcg/kg IV/IN/IM for pain, but use cautiously in shock. Dose and protocol for blood products, calcium, and vasopressors vary substantially—check local protocol.
High-Yield Pearls
Tourniquet failure usually means wrong location or wrong bleeding type, not that hemorrhage control has failed as a concept.
TXA is time-sensitive; if you’re outside the window, don’t let the drug distract from source control and transport.
In massive hemorrhage, the best “prehospital procedure” may be speeding the patient to the place that can stop the bleed.
The Mimics
Vasovagal syncope — transient bradycardia and recovery without persistent shock; confusing it with hemorrhage misses occult blood loss.
Sepsis — warm shock can look similar, but bleeding history and visible blood loss should redirect management.
Anticoagulant effect without active bleeding — abnormal labs do not equal exsanguination; confusing the two leads to unnecessary invasive treatment.
Mechanical fall with bruising only — stable vitals and no ongoing blood loss; overcalling hemorrhage wastes blood products and transport priority.
Board Question
A 34-year-old man has a deep axillary wound with brisk bleeding that persists despite direct pressure. Which intervention is most appropriate next?
AApply a standard extremity tourniquet over the upper arm and expect full control
BPack the wound deeply with hemostatic gauze and maintain firm pressure
CGive 2 liters of normal saline first
DDelay intervention until a full trauma survey is completed
Reveal answer
Correct: B
Pack the wound deeply with hemostatic gauze and maintain firm pressure. Junctional bleeding often cannot be controlled with a standard tourniquet, so packing and pressure are key. Rapid external hemorrhage control is the priority; fluids and survey come later.
Diabetic foot infections are common, limb-threatening, and easy to underestimate. Delayed recognition leads to osteomyelitis, sepsis, amputation, and...
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The Case
A 63-year-old man takes off his left shoe and the room changes before anyone says a word: there’s a sour smell, a sock stuck to the heel, and a swollen forefoot with shredded skin at the edge of a plantar ulcer. He says it “only started hurting yesterday,” though the redness already climbs past his ankle and his blood sugar meter is dead in his pocket. He keeps glancing at the door and insisting he can go home after antibiotics. The question is whether this is a simple wound or a limb-and-life problem hiding under neuropathy.
Before You Read
Which diabetic foot wounds need immediate admission and surgery?
What findings suggest deep infection, osteomyelitis, or necrotizing infection?
What antibiotics are reasonable up front, and when is source control the real treatment?
Why It Matters
Diabetic foot infections are common, limb-threatening, and easy to underestimate. Delayed recognition leads to osteomyelitis, sepsis, amputation, and recurrent admissions.
When to Think of It
Think diabetic foot infection in any patient with diabetes, neuropathy, ulcer, malodor, drainage, cellulitis, swelling, warmth, pain out of proportion, or systemic symptoms. Red flags include exposed bone, crepitus, bullae, necrosis, rapid progression, severe hyperglycemia, and inability to bear weight.
Sick or Not Sick
The one call that matters most: Is there deep, limb-threatening, or necrotizing infection requiring urgent surgery/admission rather than outpatient antibiotics? If yes, admit and involve surgery/podiatry/orthopedics early. If no, some mild superficial infections can be managed outpatient with close follow-up.
The First Fifteen Minutes
Assess for sepsis → vitals, lactate if concerned, blood cultures if systemic illness, because infected diabetics can look deceptively well until they crash.
Inspect and probe the wound → remove dressings, look for pus, necrosis, exposed tendon/bone, and whether the ulcer probes to bone, because depth determines escalation.
Plain radiograph of the foot → look for gas, foreign body, bony destruction, or osteomyelitis clues, because imaging can reveal limb-threatening disease fast.
Broad-spectrum antibiotics if moderate/severe infection or systemic illness → e.g., vancomycin 15–20 mg/kg IV plus piperacillin-tazobactam 4.5 g IV, because you must cover MRSA, streptococci, gram-negatives, and anaerobes until cultures and source control clarify. Dosing varies with renal function and local resistance—check protocol if uncertain.
If necrotizing infection is suspected → add clindamycin 900 mg IV, because it suppresses toxin production while surgery is arranged.
Pain control → acetaminophen 650–1,000 mg PO or IV if needed; opioids may be required for severe pain, but do not delay evaluation.
Tetanus update if immunization is not current, because contaminated wounds need prophylaxis.
Optimize glucose and fluids as clinically indicated → insulin and IV fluids if hyperglycemic/dehydrated, because metabolic derangement worsens healing and infection control.
Definitive Care & Disposition
Definitive care is source control: debridement, drainage, revascularization when ischemic, wound care, offloading, and sometimes amputation. Admit patients with systemic toxicity, deep ulcers, abscess, osteomyelitis, ischemia, rapid progression, inability to ambulate, or failure of oral therapy. Mild superficial cellulitis without deep involvement may be treated outpatient with strict follow-up, but only when exam and imaging are reassuring and the patient can comply.
How This One Kills
The fatal error is treating odor, erythema, or drainage as a “simple skin infection” without checking for bone, necrosis, or gas. Another miss is discharging a neuropathic patient whose pain is minimal but whose infection is deep and advancing.
The Atypical Presentation
Many diabetic patients have neuropathy, so the foot may be badly infected with surprisingly little pain. Elderly or immunocompromised patients may present with weakness, confusion, or hyperglycemia rather than obvious fever. If a wound is chronic, foul, swollen, or probe-to-bone positive, don’t let the lack of pain reassure you; the infection may already be deep or bone-involving.
Back to Our Patient
Back to our patient: the foul smell, swollen forefoot, and ulcer near the heel make this a diabetic foot infection until proven otherwise, and the first fork is whether there is deep or necrotizing disease. If the wound probes to bone, shows gas, or the patient is systemically ill, he needs admission, broad IV antibiotics, and urgent surgical evaluation rather than outpatient treatment. If imaging and exam show only mild superficial cellulitis and he is reliable for follow-up, outpatient antibiotics and wound care may be appropriate, but the threshold to admit is low. The plan is source control first, antibiotics second, and offloading/wound care to keep the limb.
Patient Presentation to Attending
“63-year-old man with diabetes and a foul-smelling plantar foot ulcer that’s become swollen and erythematous over the last few days. He has neuropathy with minimal pain, but the redness extends above the ankle and there’s drainage with concern for deep infection; he denies trauma, but he’s not been checking glucose well. On exam the ulcer is malodorous with surrounding cellulitis and possible probe-to-bone, and he is afebrile but tachycardic. I’m concerned for a moderate-to-severe diabetic foot infection and possible osteomyelitis or necrotizing infection. I’m getting an x-ray, blood work, cultures if indicated, starting broad IV antibiotics, updating tetanus, and consulting surgery/podiatry for admission and source control.”
Study Directive
Practice a diabetic foot exam on a photo set: inspect, probe-to-bone, assess perfusion, look for crepitus/necrosis.
Memorize a severe diabetic foot infection antibiotic regimen and rehearse when to add clindamycin.
Draw a disposition algorithm: mild outpatient vs moderate/severe admit vs necrotizing surgery.
Review local osteomyelitis workup and surgical consult pathways.
Create a checklist for diabetic foot discharge instructions: offloading, glucose control, wound care, return precautions, and follow-up timing.
Mechanism Pearl of the Day: Today’s topics share one theme: the field and the wound are often the disease. Whether it’s crowd collapse, traumatic bleeding, a junctional hemorrhage, or an infected diabetic foot, early outcome is determined less by the final diagnosis than by rapid recognition of physiology, source control, and getting the patient to the right system fast.
Key Medications
Vancomycin: 15–20 mg/kg IV; adjust to renal function and institutional monitoring.
Piperacillin-tazobactam: 4.5 g IV.
Cefepime: 2 g IV; often paired with metronidazole 500 mg IV for anaerobic coverage when piperacillin-tazobactam is not used.
Clindamycin: 900 mg IV for suspected necrotizing infection or toxin suppression.
Metronidazole: 500 mg IV/PO for anaerobic coverage in selected regimens.
Insulin regular: per hyperglycemia/DKA protocol; dosing varies substantially.
Tdap/Td: 0.5 mL IM if immunization is not up to date. Antibiotic selection and dosing vary with renal function, severity, and local resistance; check institutional protocol or a reference if uncertain.
High-Yield Pearls
Pain is not a reliable severity marker in diabetic feet because neuropathy blunts the signal.
Probe-to-bone matters: it should sharply raise concern for osteomyelitis and admission.
A diabetic foot infection with gas, crepitus, or necrosis is a surgical emergency until proven otherwise.
The Mimics
Gout — sudden severe pain without ulcer, drainage, or chronic neuropathic ulcer; confusing it with infection misses source control.
Venous stasis dermatitis — bilateral chronic edema and skin changes rather than a focal malodorous ulcer; mislabeling it delays needed care or antibiotics.
Cellulitis without ulcer — superficial erythema without deep tissue findings; treating a deep infection as simple cellulitis risks amputation.
Ischemic foot without infection — cold, painful, pulseless foot with little drainage; antibiotics alone won’t fix threatened perfusion.
Board Question
A 66-year-old man with diabetes has a foul-smelling plantar ulcer, surrounding erythema, and crepitus on exam. He is tachycardic and febrile. What is the best next step?
AOral cephalexin and outpatient follow-up
BImmediate discharge after wound cleansing
CBroad-spectrum IV antibiotics and urgent surgical evaluation
DTopical mupirocin and offloading only
Reveal answer
Correct: C
Broad-spectrum IV antibiotics and urgent surgical evaluation. Crepitus, systemic signs, and a foul diabetic foot wound suggest a deep or necrotizing infection, which is a surgical disease. Oral antibiotics and discharge are unsafe because source control cannot wait.
A quick test of recall from prior editions. Commit to an answer before you check.
From yesterday's edition
A 57-year-old woman presents with crushing chest pressure and diaphoresis. The ECG shows ST elevation in V2 through V5 with reciprocal ST depression in III and aVF. What’s the diagnosis, and the first move?
Check your answer
Anterior STEMI. Activate STEMI pathway, give antiplatelet/anticoagulation per local protocol, manage dysrhythmia/shock risk, and get emergent cardiology involvement.
From the June 14 edition
Today, three days ago: Labetalol. What’s the adult ED dose, and the contraindication you’d most regret missing?
Check your answer
10–20 mg IV over 2 min; repeat or double every 10 min to effect per protocol, or infusion 0.5–2 mg/min. Pregnancy severe HTN regimens often use 20/40/80 mg stepwise dosing. Asthma/COPD with active bronchospasm, bradycardia, heart block, cardiogenic shock, decompensated heart failure, cocaine/stimulant toxicity caution depending on scenario.
From the June 7 edition
A 64-year-old man with uncontrolled hypertension has abrupt tearing chest pain radiating to the back. He is hypertensive and tachycardic. Which is the most appropriate initial therapy?
AIV nitroglycerin alone
BIV esmolol followed by a vasodilator if needed
CImmediate thrombolysis
DOral amlodipine
Reveal answer
Correct · B
IV esmolol followed by a vasodilator if needed
The first priority in suspected aortic dissection is reducing aortic shear stress by lowering heart rate and contractility with a beta-blocker. A vasodilator may be added only after rate control if blood pressure remains elevated; giving a vasodilator first can cause reflex tachycardia and worsen dissection.
Journal Watch
From the FOAMed wire
Notable posts and reviews from the last week, ranked by relevance to today’s lead and source trust.
Stable narrow complex tachycardias are not always what they seem. In this ECG Cases, Dr. Jesse McLaren explores the key pitfalls in distinguishing sinus tachycardia, atrial fibrillation, atrial flutter, and SVT, with 8 real-world cases highlighting common ECG interpretation...
Master point-of-care ultrasound billing. Learn key ED documentation, image retention, and CPT coding rules to secure proper reimbursement and avoid denials. The post Coding Wizard: A Quick Guide to Coding Point-of-Care Ultrasound appeared first on ACEP Now .
In this episode, Sam Ashoo, MD and Dr. T.R. Eckler, MD discuss the April 2026 Emergency Medicine Practice article, Wide Complex Tachycardia in the Emergency Department: An Updated Approach to Diagnosis and Management . Introduction – 0:11 Article Overview – 2:02 Top 5 Bedside Steps – 7:54 Sodium Channel Blockade – 9:26 Hyperkalemia – 11:53 SVT with...
Hip complaints are bread-and-butter emergency medicine—but every so often they are anything but straightforward. The obvious shortened, externally rotated leg after a fall is one thing; the patient with acute hip...
Pharmacology Corner
Two drugs for the shift
One antimicrobial and one other ED workhorse — selected daily, with sources and last-reviewed dates so every dose is cross-checkable.
Antimicrobial of the Day
Nitrofurantoin
Nitrofuran urinary antibacterial
Indication
First-line for uncomplicated cystitis. Not for pyelonephritis or any systemic/tissue infection.
What’s your dose? — reveal dosing & cautions
ED Dose
Monohydrate/macrocrystals (Macrobid): 100 mg PO q12h x5 days. Macrocrystals: 50–100 mg PO QID.
Renal Adjustment
Avoid when CrCl < 30 mL/min — inadequate urinary concentration and increased toxicity risk.
Contraindications
CrCl < 30 mL/min, pregnancy at term (38–42 weeks) and labor, neonates < 1 month (hemolysis risk), and G6PD deficiency.
Nausea and vomiting from gastroenteritis, migraine, pregnancy-related nausea adjunct when appropriate, renal colic, biliary disease, medication effects, and peri-procedural nausea prevention.
What’s your dose? — reveal dosing & cautions
ED Dose
4 mg IV/ODT/PO once; may repeat based on response. Higher or repeated dosing increases QT considerations; use local pregnancy/pediatric protocols when relevant.
Renal Adjustment
No renal adjustment.
Contraindications
Known hypersensitivity; congenital long QT or high-risk QT prolongation caution; avoid with apomorphine due hypotension/loss of consciousness risk.
Interactions
QT-prolonging agents including macrolides, fluoroquinolones, antipsychotics, methadone; serotonergic drugs have rare serotonin syndrome reports.
Monitoring
Symptom response, QTc/electrolytes in high-risk patients, constipation/headache.
ED Pearl
Ondansetron is easy to order reflexively; in the hypokalemic vomiting patient on QT-prolonging meds, the antiemetic can become part of the arrhythmia stack.
For educational use only. Verify dosing against the FDA label and your institution’s pharmacy resources before administering.
ECG of the Day
Ischemia
Inferior STEMI
Inferior ST elevation is usually RCA or LCx occlusion; always look for RV involvement and posterior extension.
The Tracing
A 59-year-old man presents with diaphoresis and epigastric pressure. The ECG shows ST elevation in II, III, and aVF with reciprocal ST depression in I and aVL. ST elevation is greater in III than II, and V1 has slight ST elevation. He becomes hypotensive after nitroglycerin given before arrival, prompting right-sided leads.
Reciprocal ST depression in I and aVL supports acute inferior infarction
STE in lead III greater than lead II suggests RCA occlusion; STE in II greater than III suggests LCx more often
Look for posterior involvement with ST depression in V1–V3
Look for right ventricular infarction with V4R ST elevation, especially when hypotensive
Pearls
Inferior STEMI is a territory plus a complication screen: RV infarct, posterior infarct, bradyarrhythmias, and AV block.
Lead aVL reciprocal depression is a powerful subtle clue when inferior STE is small.
Right-sided leads are fast and high-yield when inferior STEMI patients are hypotensive or have clear RCA clues.
Pitfalls
Nitrates can crash a preload-dependent RV infarct patient. Use caution when inferior STEMI plus hypotension or V4R elevation is present.
Inferior MI can present as nausea, weakness, syncope, or epigastric pain rather than classic chest pain.
Do not ignore bradycardia or AV block in inferior STEMI; nodal ischemia may evolve quickly.
At the Bedside
Activate STEMI pathway, give antiplatelet/anticoagulation per local protocol, obtain right-sided/posterior leads when indicated, avoid nitrates if RV infarct or hypotension is suspected, and involve cardiology immediately.
For educational use only. Verify ECG interpretation against the LITFL entry and your institution’s practice before clinical decision-making.
Case of the Day
From the lead · Mass Gathering Medicine and Triage
Self-Examination
Test Your Understanding
A 31-year-old at a marathon finish area is found sitting on the curb, flushed, tachycardic, and confused. He is unable to
Reveal answer
Correct answer · B
Immediate external cooling and rapid reassessment for heat stroke. Altered mental status in a hot, crowded setting is heat stroke until proven otherwise; cooling is the time-critical intervention. Waiting, treating anxiety, or using antipyretics misses the mechanism and risks end-organ injury.
Study Pace4 topics today; 108 remaining; Day 16 of 43Deadline · June 1, 2026