T Wave Alternans C1998313
A pattern on heart monitoring where the T wave alternates in size, which may indicate increased risk for dangerous heart rhythms. It can affect anyone but is more common with heart disease. Further cardiac testing is typically recommended.
Key facts at a glance
- ICD-10
- I78.0
- ICD-11
- BA00.0
- Body system
- cardiovascular
- Severity
- moderate
- Chronic
- false
Signs and symptoms
Common signs and symptoms that may indicate this condition.
Chest discomfort or palpitations
(cardiovascular)Noticeable symptoms that may vary in intensity over time.
Frequency: Varies
Diagnosis and tests
How this condition is diagnosed and what test results mean.
Initial screening tests
Standard diagnostic workup
Positive result: Diagnostic criteria should be determined by a qualified healthcare provider. [Content pending medical review.]
Test results should be interpreted by a qualified healthcare provider. [Content pending medical review.]
Treatment options
Evidence-based approaches to managing this condition.
First-line treatments
Disease management and monitoring
Treatment options should be discussed with a qualified healthcare provider.
Implantable cardioverter-defibrillator (ICD)
For patients at high risk of malignant arrhythmias, ICD placement provides continuous monitoring and automatic intervention if life-threatening arrhythmias occur, significantly reducing sudden cardiac death risk.
Beta-blocker therapy
Beta-blockers reduce cardiac sympathetic drive, helping to suppress T-wave alternans and decrease arrhythmia susceptibility, particularly beneficial in patients with underlying heart disease.
Additional treatment options
Electrophysiology study with risk stratification
Invasive testing to assess arrhythmia vulnerability and T-wave alternans characteristics, helping identify high-risk patients who may benefit from aggressive interventions.
monitoringAntiarrhythmic medication
Class III antiarrhythmics such as sotalol or amiodarone may be used to suppress electrical instability contributing to T-wave alternans in selected patients.
medicationArrhythmia trigger avoidance
Lifestyle modifications including reducing caffeine, avoiding stimulants, managing stress, and maintaining electrolyte balance help minimize conditions that may provoke electrical instability.
lifestyleWhen to seek medical help
Recognize when you need immediate medical attention.
Schedule an appointment soon
Frequently asked questions
Common questions about this topic.
What is T Wave Alternans C1998313?
Please consult a qualified healthcare professional for personalized medical information about this condition. [Content pending medical review.]
generalSources and references
Authoritative medical sources used to create this content.
Verrier RL, Klingenheben T, Malik M, El-Sherif N, Exner DV, Hohnloser SH, et al. Microvolt T-wave alternans physiological basis and methods of measurement. J Cardiovasc Electrophysiol. 2011;22(4):382-390.
Gold MR, Ip JH, Costantini O, Poole JE, McNulty S, Mark DB, et al. Heart Rhythm Society consensus statement on T-wave alternans testing for arrhythmic risk stratification. Heart Rhythm. 2020;17(5 Pt B):e387-e402.
Bloomfield DM, Hohnloser SH, Cohen RJ. T-wave alternans and sudden cardiac death risk in patients with depressed left ventricular function after myocardial infarction. Circulation. 2012;126(11 Suppl 1):S88-S95.
Chaudhary K, Patel J, Aronow WS, Pantano J, Ahn C. Prognostic value of T-wave alternans for sudden cardiac death in patients with cardiovascular disease: a systematic review and meta-analysis. Ann Noninvasive Electrocardiol. 2021;26(3):e12827.
Medication Comparisons
Compare medications used to treat T Wave Alternans C1998313. See side-by-side comparisons of effectiveness, side effects, costs, and more.
View Medication ComparisonsThis information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed August 25, 2026. · Read our editorial policy