Approach to the Critical Patient

Immediate priorities

Airway and oxygenation threats

Infection control activation

Monitoring and targets

Continuous monitoring bundle

Escalation triggers

Team and consult triggers

Critical care consultation

Infectious disease consultation

History

Presentation pattern

Core syndrome

Constitutional symptoms

Exposure and epidemiology history

Epidemiologic context

Important negatives and distinguishing features

Features arguing against SARS

Risk factors for severe outcomes

Host risk factors

Physical Exam

Vital signs

Critical vital sign patterns

Respiratory examination

Lung exam findings

Important negative findings

Systemic examination

General appearance

Gastrointestinal

PITFALLS

Clinical-radiographic discordance

Differential Diagnosis

Life-threatening mimics

Respiratory pathogens

Bacterial pneumonia

Distinguishing features

SARS-specific differentiating clues

Other differential considerations

Laboratory Tests

Hallmark laboratory findings

Lymphopenia

Thrombocytopenia

LDH elevation

Metabolic and organ function

Liver function tests

Creatine kinase

Electrolytes

Sepsis and perfusion assessment

Lactate

Blood cultures

Complete blood count with differential

SARS-specific diagnostics

RT-PCR for SARS-CoV-1

Serology

Diagnostic Tests

Scoring Systems

Clinical prediction tools

Severity stratification

MRI

MRI role in SARS-CoV-1

Contraindications

CT

CT chest findings

CT utility and guidance

CT indications

Ultrasound

Lung ultrasound

Cardiac and hemodynamic POCUS

Procedural guidance

Disposition

Admission criteria

All suspected and probable SARS cases require hospital admission

ICU admission triggers

Respiratory failure criteria

Hemodynamic compromise

Discharge criteria

Safe discharge requirements

Infection control clearance

Treatment

Supportive care

Oxygen therapy

Fluid and electrolyte management

Antipyretics

Empiric antibiotics

Broad-spectrum coverage to exclude bacterial pneumonia

Antiviral considerations

Lopinavir/ritonavir

Ribavirin

Interferon therapy

Corticosteroids

Pulse methylprednisolone for critical SARS

Steroid precautions

Mechanical ventilation

Low tidal volume ventilation per ARDS protocol

Ventilator infection control

Rescue therapies

Convalescent plasma

IVIG

Special Populations

Pregnancy

Pregnancy-specific risks

Oxygen targets in pregnancy

Medication considerations

Imaging

Geriatric

Age-related severity

Comorbidity impact

Infection control

Supportive care modifications

Pediatrics

Milder disease pattern in children

Diagnostic differences

Treatment in pediatrics

Infection control

Background

Epidemiology

2003 global outbreak statistics

Healthcare worker burden

Age distribution and mortality

Pathophysiology

Viral characteristics

Biphasic disease mechanism

Organ injury mechanisms

Transmission characteristics

Therapeutic Considerations

No proven specific antiviral therapy exists

Immunomodulatory strategy

Ventilatory strategy

No approved vaccine for SARS-CoV-1

Patient Discharge Instructions

copy discharge instructions

SARS-CoV-1 recovery instructions

Monitoring at home

Warning signs to return to emergency department immediately

Follow-up after discharge

Infection control at home

References

Guidelines and key sources

Foundational guidelines

Key clinical studies

Diagnostic scoring references

Radiologic references

Treatment references

SymptomDx is an educational tool for medical professionals. It does not replace clinical judgment. Verify all clinical data and drug dosages with authoritative sources.