AVNRT laboratory findings
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] Ramyar Ghandriz MD[2]
Overview
Patients presenting AVNRT must be checked for thyroid function, serum electrolytes, and cardiac markers.
Laboratory Findings
Depending upon the patient’s history and demographics, the following laboratory studies should be considered:[1]
- Thyroid function tests (TFTs) – an overactive thyroid may increase the risk of AVNRT
- Electrolytes – hypokalemia, hypomagnesemia may predispose to AVNRT
- Cardiac markers – if there is a concern that myocardial infarction (a heart attack) has occurred either as a cause or as a result of the AVNRT; this is usually only the case if the patient has experienced ischemic chest pain
References
- ↑ Fernando, Harith (2020). “Investigations for the assessment of adult patients presenting to the emergency department with supraventricular tachycardia”. World Journal of Emergency Medicine. 11 (1): 54. doi:10.5847/wjem.j.1920-8642.2020.01.008. ISSN 1920-8642.
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