Approach to the Critical Patient

Immediate priorities

Airway and breathing threats

Hemodynamic instability

Key early branching decision

Monitoring and targets

Monitoring bundle

Escalation triggers

ICU escalation criteria

Immediate consults

Consultation triggers

History

Presentation pattern

Classic symptom triad

Symptom timeline

Risk factors and inciting events

Traumatic causes

Procedural causes

Non-traumatic causes

Anatomical risk factors

Key historical elements

Important negatives to establish

Collateral and surgical history

Past medical history

Physical Exam

Vitals and hemodynamic assessment

Vital sign pattern

Pulmonary and cardiovascular exam

Chest exam findings

Cardiovascular findings

Neurologic exam

Mental status

Dermatologic and ophthalmologic exam

Petechial rash

Dilated fundoscopy

PITFALLS

Diagnostic pitfalls

Differential Diagnosis

Life-threatening mimics

Pulmonary thromboembolism

ARDS from other cause

Traumatic brain injury

Acute ischemic stroke

Common mimics

Sepsis and pneumonia

Air embolism

Acute chest syndrome (sickle cell)

Thrombotic thrombocytopenic purpura

Neurogenic pulmonary edema

Non-traumatic FES causes

Sickle cell disease related FES

Liposuction related FES

Laboratory Tests

Core diagnostic labs

Arterial blood gas

Complete blood count

Coagulation panel

Inflammatory and metabolic labs

Inflammatory markers

Metabolic panel

Urinalysis

Specialized labs

Reticulocyte count

Type and screen

Blood cultures

Hemoglobin S quantification

Diagnostic Tests

Scoring Systems

Gurd and Wilson criteria (most widely used)

Schonfeld Fat Embolism Index

MRI

Brain MRI with DWI (most sensitive for cerebral FES)

MRI limitations

CT

Chest CT

CT pulmonary angiography

Brain CT

Ultrasound

Echocardiography (bedside or formal TTE/TEE)

Point-of-care ultrasound (POCUS)

Transcranial Doppler

Disposition

ICU admission

ICU admission indications

Transfer criteria

Transfer indications

Discharge criteria

Safe discharge requirements

Follow-up planning

Outpatient follow-up timing

Treatment

Respiratory support

Supplemental oxygen

Mechanical ventilation

Hemodynamic management

Fluid resuscitation

Vasopressors for refractory hypotension

Right ventricular failure management

Pharmacologic therapies

Corticosteroids

VTE prophylaxis

Heparin

High-intensity statins

Supportive ICU care

Standard ICU supportive measures

Surgical and preventive treatment

Early fracture fixation

SCD-related FES treatment

Special Populations

Pregnancy

Epidemiology in pregnancy

Physiologic considerations

Medication safety

Fetal monitoring

Geriatric

Epidemiology in elderly

Physiologic considerations

Medication considerations

Prognosis considerations

Pediatrics

Epidemiology in children

Clinical differences from adults

Weight-based dosing

Ventilation in children

Background

Epidemiology

Incidence and prevalence

Mortality and morbidity

Pathophysiology

Mechanical theory (primary mechanism)

Biochemical theory (secondary amplification)

Paradoxical embolism mechanism

SCD-specific pathophysiology

Therapeutic Considerations

No specific pharmacologic cure exists

Corticosteroid controversy

ARDS management evidence

Exchange transfusion in SCD-FES

Prevention strategy

Patient Discharge Instructions

copy discharge instructions

Discharge instructions for Fat Embolism Syndrome

References

Guidelines and key sources

Kwon J, Coimbra R

Coccolini F, Cremonini C, Moore EE et al

Godoy DA, Di Napoli M, Rabinstein AA

Talbot M, Schemitsch EH

Parizel PM, Demey HE, Veeckmans G et al

Alrasheed AS, Elazrag AM, Alqahtani MS, Alabbas F

Scoring and diagnostic tools

Gurd AR and Wilson RI

Schonfeld SA et al

Kainoh T, Iriyama H, Komori A et al

Rothberg DL, Makarewich CA

Bailey K, Wesley J, Adeyinka A, Pierre L