Pulseless ventricular tachycardia laboratory findings: Difference between revisions
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*There aren't any specific diagnostic laboratory findings associated with pulseless ventricular tachycardia. | *There aren't any specific diagnostic laboratory findings associated with pulseless ventricular tachycardia. | ||
*To find the underlying etiology of the arrhythmic event, the following investigations should be conducted; | *To find the underlying etiology of the arrhythmic event, the following investigations should be conducted; | ||
**Serial cardiac enzymes; these can help assess myocardial ischemia or infarction. They include; | **'''Serial cardiac enzymes'''; these can help assess myocardial ischemia or infarction. They include; | ||
#Troponin I and Troponin T | #Troponin I and Troponin T | ||
#Creatinine-kinase MB | #Creatinine-kinase MB | ||
**Serum electrolytes;<ref name="pmid3337132">{{cite journal |vauthors=Tchou P, Young P, Mahmud R, Denker S, Jazayeri M, Akhtar M |title=Useful clinical criteria for the diagnosis of ventricular tachycardia |journal=Am. J. Med. |volume=84 |issue=1 |pages=53–6 |date=January 1988 |pmid=3337132 |doi=10.1016/0002-9343(88)90008-3 |url=}}</ref><ref name="pmid4709549">{{cite journal |vauthors=Lown B, Temte JV, Arter WJ |title=Cardiac arrhythmias. 6. Ventricular tachyarrhythmias. Clinical aspects |journal=Circulation |volume=47 |issue=6 |pages=1364–81 |date=June 1973 |pmid=4709549 |doi=10.1161/01.cir.47.6.1364 |url=}}</ref> measuring electrolyte levels are important as imbalances in certain electrolytes predispose patients to [[torsade the pointes]], a common cause of pulseless ventricular tachycardia. Important electrolytes to measure include; | **'''Serum electrolytes''';<ref name="pmid3337132">{{cite journal |vauthors=Tchou P, Young P, Mahmud R, Denker S, Jazayeri M, Akhtar M |title=Useful clinical criteria for the diagnosis of ventricular tachycardia |journal=Am. J. Med. |volume=84 |issue=1 |pages=53–6 |date=January 1988 |pmid=3337132 |doi=10.1016/0002-9343(88)90008-3 |url=}}</ref><ref name="pmid4709549">{{cite journal |vauthors=Lown B, Temte JV, Arter WJ |title=Cardiac arrhythmias. 6. Ventricular tachyarrhythmias. Clinical aspects |journal=Circulation |volume=47 |issue=6 |pages=1364–81 |date=June 1973 |pmid=4709549 |doi=10.1161/01.cir.47.6.1364 |url=}}</ref> measuring electrolyte levels are important as imbalances in certain electrolytes predispose patients to [[torsade the pointes]], a common cause of pulseless ventricular tachycardia. Important electrolytes to measure include; | ||
#Calcium | #Calcium | ||
#Potassium | #Potassium | ||
#Phosphate | #Phosphate | ||
#Magnesium | #Magnesium | ||
**A toxicology screen should be obtained to measure levels of therapeutic and illicit drugs (cocaine) as they can result in ventricular tachycardia. | **A '''toxicology screen''' should be obtained to measure levels of therapeutic and illicit drugs (cocaine) as they can result in ventricular tachycardia. | ||
==References== | ==References== | ||
Revision as of 15:48, 8 July 2020
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Aisha Adigun, B.Sc., M.D.[2]
Overview
There aren't any specific findings associated with pulseless ventricular tachycardia. However, investigations should be conducted to find the underlying etiology of the arrhythmia.
Laboratory Findings
- There aren't any specific diagnostic laboratory findings associated with pulseless ventricular tachycardia.
- To find the underlying etiology of the arrhythmic event, the following investigations should be conducted;
- Serial cardiac enzymes; these can help assess myocardial ischemia or infarction. They include;
- Troponin I and Troponin T
- Creatinine-kinase MB
- Serum electrolytes;[1][2] measuring electrolyte levels are important as imbalances in certain electrolytes predispose patients to torsade the pointes, a common cause of pulseless ventricular tachycardia. Important electrolytes to measure include;
- Calcium
- Potassium
- Phosphate
- Magnesium
- A toxicology screen should be obtained to measure levels of therapeutic and illicit drugs (cocaine) as they can result in ventricular tachycardia.
References
- ↑ 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.
- ↑ 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.