Ventricular tachycardia laboratory findings

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

Overview

Serial cardiac enzymes, serum electrolytes as well as calcium, magnesium and phosphate levels, should be obtained. A toxicology screen should also be obtained to assess for illicit drugs as the cause of the VT, as well as levels of medications that may have caused the VT.

Laboratory Findings

Common laboratory findings predicting sudden cardiac arrest and ventricular tachycardia include:



Laboratory Pearls for Ventricular Tachycardia
Electrolytes Hypokalemia and hypomagnesemia frequently associated with torsades de pointes
Troponin I Elevated in myocardial infarction
Creatine-kinase MB Elevated in myocardial infarction

References

  1. 1.0 1.1 Ahmad, Tariq; Fiuzat, Mona; Neely, Benjamin; Neely, Megan L.; Pencina, Michael J.; Kraus, William E.; Zannad, Faiez; Whellan, David J.; Donahue, Mark P.; Piña, Ileana L.; Adams, Kirkwood F.; Kitzman, Dalane W.; O'Connor, Christopher M.; Felker, G. Michael (2014). "Biomarkers of Myocardial Stress and Fibrosis as Predictors of Mode of Death in Patients With Chronic Heart Failure". JACC: Heart Failure. 2 (3): 260–268. doi:10.1016/j.jchf.2013.12.004. ISSN 2213-1779.
  2. Hussein, Ayman A.; Gottdiener, John S.; Bartz, Traci M.; Sotoodehnia, Nona; deFilippi, Christopher; Dickfeld, Timm; Deo, Rajat; Siscovick, David; Stein, Phyllis K.; Lloyd-Jones, Donald (2013). "Cardiomyocyte Injury Assessed by a Highly Sensitive Troponin Assay and Sudden Cardiac Death in the Community". Journal of the American College of Cardiology. 62 (22): 2112–2120. doi:10.1016/j.jacc.2013.07.049. ISSN 0735-1097.
  3. Laslett, David B.; Cooper, Joshua M.; Greenberg, Richard M.; Yesenosky, George A.; Basil, Anuj; Gangireddy, Chethan; Whitman, Isaac R. (2020). "Electrolyte Abnormalities in Patients Presenting With Ventricular Arrhythmia (from the LYTE-VT Study)". The American Journal of Cardiology. 129: 36–41. doi:10.1016/j.amjcard.2020.04.051. ISSN 0002-9149.
  4. Menduiña, Manuel J.; Candel, José M.; Alaminos, Pilar; Gómez, Francisco J.; Vilchez, José (2005). "Bidirectional Ventricular Tachycardia Due to Digitalis Poisoning". Revista Española de Cardiología (English Edition). 58 (8): 991–993. doi:10.1016/S1885-5857(06)60385-X. ISSN 1885-5857.
  5. Tchou P, Young P, Mahmud R, Denker S, Jazayeri M, Akhtar M (January 1988). "Useful clinical criteria for the diagnosis of ventricular tachycardia". Am. J. Med. 84 (1): 53–6. doi:10.1016/0002-9343(88)90008-3. PMID 3337132.
  6. Lown B, Temte JV, Arter WJ (June 1973). "Cardiac arrhythmias. 6. Ventricular tachyarrhythmias. Clinical aspects". Circulation. 47 (6): 1364–81. doi:10.1161/01.cir.47.6.1364. PMID 4709549.