Ventricular tachycardia laboratory findings: Difference between revisions
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Common laboratory findings predicting [[sudden cardiac arrest]] and [[ventricular tachycardia]] include: | Common laboratory findings predicting [[sudden cardiac arrest]] and [[ventricular tachycardia]] include: | ||
* Elevated level of [[Natriuretic peptides—B-type]] (BNP) or N-terminal pro-[[BNP]] as the marker of [[myocardial stress]] and [[fibrosis]] in [[heart failure]] disease<ref name="AhmadFiuzat2014">{{cite journal|last1=Ahmad|first1=Tariq|last2=Fiuzat|first2=Mona|last3=Neely|first3=Benjamin|last4=Neely|first4=Megan L.|last5=Pencina|first5=Michael J.|last6=Kraus|first6=William E.|last7=Zannad|first7=Faiez|last8=Whellan|first8=David J.|last9=Donahue|first9=Mark P.|last10=Piña|first10=Ileana L.|last11=Adams|first11=Kirkwood F.|last12=Kitzman|first12=Dalane W.|last13=O'Connor|first13=Christopher M.|last14=Felker|first14=G. Michael|title=Biomarkers of Myocardial Stress and Fibrosis as Predictors of Mode of Death in Patients With Chronic Heart Failure|journal=JACC: Heart Failure|volume=2|issue=3|year=2014|pages=260–268|issn=22131779|doi=10.1016/j.jchf.2013.12.004}}</ref> | * Elevated level of [[Natriuretic peptides—B-type]] (BNP) or N-terminal pro-[[BNP]] as the marker of [[myocardial stress]] and [[fibrosis]] in [[heart failure]] disease<ref name="AhmadFiuzat2014">{{cite journal|last1=Ahmad|first1=Tariq|last2=Fiuzat|first2=Mona|last3=Neely|first3=Benjamin|last4=Neely|first4=Megan L.|last5=Pencina|first5=Michael J.|last6=Kraus|first6=William E.|last7=Zannad|first7=Faiez|last8=Whellan|first8=David J.|last9=Donahue|first9=Mark P.|last10=Piña|first10=Ileana L.|last11=Adams|first11=Kirkwood F.|last12=Kitzman|first12=Dalane W.|last13=O'Connor|first13=Christopher M.|last14=Felker|first14=G. Michael|title=Biomarkers of Myocardial Stress and Fibrosis as Predictors of Mode of Death in Patients With Chronic Heart Failure|journal=JACC: Heart Failure|volume=2|issue=3|year=2014|pages=260–268|issn=22131779|doi=10.1016/j.jchf.2013.12.004}}</ref> | ||
* [[Electrolytes]] abnormality such as [[hypokalemia]], [[hypomagnesemia]] | |||
* Medications intoxication such as [[digoxin]], [[tricyclic antidepressant]] | |||
* [[Cocaine]] intoxication | |||
* Highly sensitive [[troponinT]] indicating [[cardiomyocyte]] injury<ref name="HusseinGottdiener2013">{{cite journal|last1=Hussein|first1=Ayman A.|last2=Gottdiener|first2=John S.|last3=Bartz|first3=Traci M.|last4=Sotoodehnia|first4=Nona|last5=deFilippi|first5=Christopher|last6=Dickfeld|first6=Timm|last7=Deo|first7=Rajat|last8=Siscovick|first8=David|last9=Stein|first9=Phyllis K.|last10=Lloyd-Jones|first10=Donald|title=Cardiomyocyte Injury Assessed by a Highly Sensitive Troponin Assay and Sudden Cardiac Death in the Community|journal=Journal of the American College of Cardiology|volume=62|issue=22|year=2013|pages=2112–2120|issn=07351097|doi=10.1016/j.jacc.2013.07.049}}</ref> | * Highly sensitive [[troponinT]] indicating [[cardiomyocyte]] injury<ref name="HusseinGottdiener2013">{{cite journal|last1=Hussein|first1=Ayman A.|last2=Gottdiener|first2=John S.|last3=Bartz|first3=Traci M.|last4=Sotoodehnia|first4=Nona|last5=deFilippi|first5=Christopher|last6=Dickfeld|first6=Timm|last7=Deo|first7=Rajat|last8=Siscovick|first8=David|last9=Stein|first9=Phyllis K.|last10=Lloyd-Jones|first10=Donald|title=Cardiomyocyte Injury Assessed by a Highly Sensitive Troponin Assay and Sudden Cardiac Death in the Community|journal=Journal of the American College of Cardiology|volume=62|issue=22|year=2013|pages=2112–2120|issn=07351097|doi=10.1016/j.jacc.2013.07.049}}</ref> | ||
Revision as of 04:32, 17 May 2021
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Ventricular tachycardia Microchapters |
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Differentiating Ventricular Tachycardia from other Disorders |
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Diagnosis |
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Treatment |
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Case Studies |
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Ventricular tachycardia laboratory findings On the Web |
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to Hospitals Treating Ventricular tachycardia laboratory findings |
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Risk calculators and risk factors for Ventricular tachycardia laboratory findings |
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:
- Elevated level of Natriuretic peptides—B-type (BNP) or N-terminal pro-BNP as the marker of myocardial stress and fibrosis in heart failure disease[1]
- Electrolytes abnormality such as hypokalemia, hypomagnesemia
- Medications intoxication such as digoxin, tricyclic antidepressant
- Cocaine intoxication
- Highly sensitive troponinT indicating cardiomyocyte injury[2]
- Elevated levels of natriuretic peptides—B-type (BNP) or N-terminal pro-BNP are associated with increased risk of sudden cardiac death and ventricular tachycardia, particularly in high risk ischemic heart disease and heart failure patients.[1]
- Hypocalcemia, hypokalemia, and hypomagnesemia make patients vulnerable to monomorphic VT or torsade de pointes.
- Diuretic usage can lead to hypokalemia which can provoke ventricular tachycardia.
- Cardiac troponin I and cardiac troponin T levels along with CK-MB and LDH can help access myocardial ischemia or infarction.
- Digoxin and tricyclic antidepressant blood levels should be ordered.
- Sometimes recreational drugs like cocaine, can result in ventricular tachycardia so a toxicology screen should also be obtained.
| 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
- ↑ 1.0 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.
- ↑ 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.
- ↑ 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.