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Zorluk: OrtaDisposition and Care Setting Transitions

A 74-year-old woman is evaluated in the emergency department after a sudden, brief loss of consciousness. The episode occurred while she was walking to her mailbox. She reports no preceding nausea, diaphoresis, lightheadedness, or palpitations. She regained consciousness within seconds and had no post-event confusion. Her medical history includes hypertension and osteoarthritis. Vital signs show a blood pressure of 138/82 mm Hg, heart rate of 68/min, and respiratory rate of 14/min. Orthostatic vital signs show no significant changes. Physical examination, including a comprehensive neurologic assessment, reveals no abnormalities. An electrocardiogram demonstrates normal sinus rhythm, a PR interval of 240 ms, a QRS duration of 130 ms with an rSR' pattern in lead V1, and left axis deviation. High-sensitivity cardiac troponin levels are undetectable. Based on the patient's presentation and diagnostic findings, which of the following is the most appropriate disposition for this patient?

  1. Admission to an inpatient telemetry unit for continuous cardiac monitoringCevap
  2. B
    Discharge home with an ambulatory 24-hour Holter monitor
  3. C
    Discharge home with scheduled outpatient tilt-table testing
  4. D
    Admission to the intensive care unit for immediate transvenous pacing
  5. E
    Transfer to a skilled nursing facility for fall prevention and safety evaluation

Cevap

Admission to an inpatient telemetry unit for continuous cardiac monitoring
The correct disposition is admission to an inpatient telemetry unit. This patient presents with "Stokes-Adams" attacks—syncope caused by intermittent complete heart block. Her baseline ECG demonstrates a first-degree AV block, a right bundle branch block, and a left anterior fascicular block. This pattern indicates that three major pathways of the cardiac conduction system are diseased. When combined with a history of sudden syncope lacking a prodrome, there is a very high likelihood that her remaining conduction pathways are failing intermittently, causing transient asystole. Because she is at high risk for sudden cardiac death, she cannot be safely discharged home from the emergency department and requires continuous inpatient cardiac monitoring while definitive management (typically a permanent pacemaker) is arranged.

Adım Adım Çözüm

1
Analyze the clinical presentation for risk factors.
The patient is elderly and experienced syncope without prodromal symptoms while walking, which are classic red flags for a cardiogenic etiology rather than a benign reflex or orthostatic cause.
Identifying the suspected etiology of syncope determines the urgency of the workup.
2
Interpret the diagnostic data, primarily the electrocardiogram.
The ECG shows a prolonged PR interval (1st-degree AV block), right bundle branch block (RBBB), and left axis deviation (suggesting left anterior fascicular block).
This specific combination indicates severe, widespread disease of the His-Purkinje system.
3
Synthesize findings to determine risk of short-term adverse events.
The combination of high-risk syncope and extensive conduction disease indicates a high probability of intermittent complete heart block.
Patients with impending complete heart block require immediate intervention to prevent sudden cardiac death.
4
Select the safest and most appropriate care setting.
Inpatient admission to a telemetry unit is chosen over outpatient discharge (too risky) or the intensive care unit (unnecessary given current hemodynamic stability).
Telemetry provides continuous surveillance to capture intermittent arrhythmias and ensures immediate resuscitation resources are available.

Anahtar Kavram

Patients presenting with syncope accompanied by high-risk clinical features (e.g., lack of prodrome, onset with exertion) and electrocardiographic evidence of severe conduction disease require inpatient admission to a monitored telemetry setting to evaluate for potentially fatal arrhythmias.
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Disposition and Care Setting Transitions

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