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Difficulty: HardDisposition and Care Setting Transitions

A 75-year-old woman is evaluated in the emergency department for sudden-onset right-sided pleuritic chest pain and mild shortness of breath that began 6 hours ago. She has a history of essential hypertension and osteoarthritis. Current medications include lisinopril and acetaminophen. Vital signs are temperature 37.1°C (98.8°F), blood pressure 138/86 mm Hg, pulse 104/min, and respirations 18/min. Oxygen saturation is 96% on room air. Physical examination is unremarkable except for mild, chronic right lower extremity edema. The patient is alert, comfortable, and conversing in full sentences. Laboratory evaluation shows a serum creatinine of 1.0 mg/dL. High-sensitivity troponin I is undetectable, and N-terminal pro-B-type natriuretic peptide (NT-proBNP) is 85 pg/mL (normal: <125 pg/mL). CT pulmonary angiography reveals a segmental pulmonary embolism in the right lower lobe. Transthoracic echocardiography demonstrates normal right ventricular size and systolic function without evidence of right heart strain. The patient is administered a dose of oral apixaban. Her pain is completely relieved with oral analgesics. She lives with her healthy, supportive daughter 15 minutes away from the hospital and is ambulatory at baseline. Which of the following is the most appropriate disposition for this patient?

  1. Discharge home with oral anticoagulation and prompt outpatient follow-upAnswer
  2. B
    Admit to the general medical ward for initiation of oral anticoagulation and clinical observation
  3. C
    Admit to a telemetry unit for continuous electrocardiographic monitoring
  4. D
    Admit to a medical step-down unit to monitor for impending right ventricular failure
  5. E
    Transfer to a skilled nursing facility for supervised administration of oral anticoagulation

Answer

The most appropriate disposition is to discharge the patient home with oral anticoagulation and prompt outpatient follow-up.
The correct disposition is discharging the patient home with oral anticoagulation and prompt outpatient follow-up. The standard of care for acute pulmonary embolism has evolved significantly to favor outpatient management for carefully selected individuals. Patients who are hemodynamically stable, have a low-risk clinical score (such as a simplified Pulmonary Embolism Severity Index [sPESI] of 0), possess normal right ventricular function on imaging, and exhibit negative cardiac biomarkers are definitively classified as low risk. When these objective medical criteria are met alongside adequate social support, well-controlled pain, and no contraindications to direct oral anticoagulants, the patient should be discharged directly from the emergency department.

Step-by-Step Solution

1
Evaluate the patient's hemodynamic status.
The patient is hemodynamically stable with a blood pressure of 138/86 mm Hg.
Hemodynamic instability would classify the event as a massive (high-risk) pulmonary embolism, necessitating intensive care and reperfusion therapy.
2
Assess clinical risk using a validated stratification tool such as the simplified Pulmonary Embolism Severity Index (sPESI).
The patient has an sPESI score of 0 (age < 80, no cancer, no chronic cardiopulmonary disease, heart rate < 110/min, systolic BP >= 100 mm Hg, O2 sat >= 90%).
An sPESI score of 0 identifies the patient as being at very low clinical risk for short-term mortality.
3
Review cardiac biomarkers and right ventricular imaging.
Troponin and NT-proBNP are normal, and there is no evidence of right ventricular strain on echocardiography.
The absence of right ventricular dysfunction and myocardial necrosis rules out an intermediate-risk (submassive) pulmonary embolism, confirming the patient remains in the low-risk category.
4
Assess social and functional factors to determine the final care setting.
The patient is ambulatory, her pain is well-controlled with oral analgesics, and she has strong home support from her daughter.
Low-risk patients with adequate social support and no bleeding contraindications should be discharged home to avoid the unnecessary risks and costs associated with hospitalization.

Key Concept

Risk stratification of acute pulmonary embolism using clinical scores, biomarkers, and echocardiography to identify low-risk patients eligible for safe outpatient management.
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Topics

Disposition and Care Setting Transitions

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