Slide 1: 40F with chronic dry cough presents with syncope. [EKG] What does this EKG show?

Slide 2: [EKG showing left bundle branch block (“WiLLiAM”. QRS>120ms, Dominant S wave in V1 (“W”), Broad R wave in lateral leads (“M”), and 1st deg AV block (PR>200ms)

Slide 3: She suddenly feels unwell and lighheaded. The telemetry shows: [telemetry showing 10 second pauuuuuuuuuuuse]

Slide 4: [CXR] Her CXR shows hilar lymphadenopathy. What is your presumed dx for the etiology of her syncope?

Slide 5: Cardiac sarcoidosis! clinical manifestations: AV block/conduction disease (>40% of cases!). But also tachyarrhythmias (30%) and heart failure (<20%).


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