A 65-year-old male with HF secondary to ischemic cardiomyopathy (LV ejection fraction 25%) returns to the office for follow-up. He reports feeling palpitations several days a week but has no other symptoms during these episodes. He is unsure how long they last. Baseline dyspnea with mild to moderate exertion is unchanged. He denies significant peripheral edema, PND or change in 2 pillow orthopnea. He is prescribed aspirin 81 mg daily, enalapril 20mg bid, furosemide 40 mg daily with sliding scale for weight gain of greater than 5 lbs, carvediolol 25 mg bid, and spironolactone 25mg daily. On physical exam, BP is 98/66 mm Hg, pulse is 55 bpm with occasional extrasystole, weight is 175 lbs (up one pound from last visit). Neck exam reveals no elevation in jugular venous pulsations; lung exam is clear bilaterally; cardiac auscultation reveals a regular bradycardic rhythm without murmurs or S3, an S4 is present at the apex; extremities have trace edema. Labs show normal renal function and electrolytes. An ECG in the office shows sinus bradycardia with occasional ventricular premature beats (VPBs) and previously noted Q waves in I, aVL, V4-6.
You obtain a 24-hour Holter monitor which shows the predominant rhythm to be sinus bradycardia. There are frequent VPBs along with several episodes of nonsustained ventricular tachycardia (NSVT). The patient experienced palpitations during most of these episodes and had one episode of lightheadedness.
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