In the context of CVS monitoring, which finding in myxedema patients could be explained by their ECG pattern?
Bradycardia due to decreased metabolic rate
Myxoedema (severe hypothyroidism) markedly lowers the basal metabolic rate, which in turn reduces sympathetic tone and the intrinsic firing rate of the sinoatrial node. The characteristic ECG finding on cardiovascular monitoring is therefore sinus bradycardia, often with low-voltage complexes and flattened T waves.
Enhanced automaticity, electrolyte-triggered ventricular fibrillation and increased sympathetic tone (tachycardia) are not the typical direct explanations for the ECG pattern of myxoedema.
Hence, Bradycardia due to decreased metabolic rate.
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Important Questions from Introduction to Cardiovascular Diseases
Which ECG change is most commonly associated with myocardial ischemia?
A patient presents with chest pain and ST elevation in leads II, III, and aVF. According to the universal definition of MI, which coronary artery is most likely involved, and what is the ECG diagnosis?
Which ECG change is most characteristic of an acute myocardial infarction?
Which segment is primarily analyzed to diagnose an ST-elevation myocardial infarction (STEMI)?
What is a typical ECG finding in patients with cerebral infarct?
