Peaked T waves: Difference between revisions
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Peaked T waves refers to the pointed, tall, peaked shape of [[T waves]] on the EKG in the setting of certain abnormalities such as [[hyperkalemia]]. | Peaked T waves refers to the pointed, tall, peaked shape of [[T waves]] on the EKG in the setting of certain abnormalities such as [[hyperkalemia]]. | ||
== | ==Differential Diagnosis== | ||
* Differential diagnosis of this EKG change includes the T wave changes of [[bradycardia]] or [[stroke]]. | |||
* Prominent [[U wave]]s and [[QTc]] prolongation are more consistent with [[stroke]] than hyperkalemia. | |||
==Diagnosis== | |||
* Earliest sign of hyperkalemia | * Earliest sign of hyperkalemia | ||
* Occurs with K > 5.5 meq/li | * Occurs with K > 5.5 meq/li | ||
==Electrocardiographic Examples== | ==Electrocardiographic Examples== | ||
Shown below is the progression of [[T wave]] changes in hyperkalemia: | |||
[[Image:Hyperkalemia2.jpg|500px|Peaked T waves]] | |||
Shown below is an EKG showing peaked T waves in the lateral leads: | |||
[[Image:Hyperkalemia1.jpg|500px|Peaked T waves]] | |||
Shown below is an EKG showing symmetric, narrow, peaked T waves in the lateral leads: | |||
[[Image:Hyperkalemia.jpg|500px|Tall, symmetric, narrow based T waves in a hyperkalemic patient.]] | |||
==References== | ==References== | ||
Latest revision as of 01:40, 24 July 2013
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
Overview
Peaked T waves refers to the pointed, tall, peaked shape of T waves on the EKG in the setting of certain abnormalities such as hyperkalemia.
Differential Diagnosis
- Differential diagnosis of this EKG change includes the T wave changes of bradycardia or stroke.
- Prominent U waves and QTc prolongation are more consistent with stroke than hyperkalemia.
Diagnosis
- Earliest sign of hyperkalemia
- Occurs with K > 5.5 meq/li
Electrocardiographic Examples
Shown below is the progression of T wave changes in hyperkalemia:
Shown below is an EKG showing peaked T waves in the lateral leads:
Shown below is an EKG showing symmetric, narrow, peaked T waves in the lateral leads:
