using System.Threading;
Sign-in, or Join our Ekg-Advanced plan. Join Restore

Infarction - Ischemia Injury Infarction


Introduction

A normal (physiologic) “Q” wave measures less than 0.04 second

Depth measures less than 1/3 height of R wave

12lead ecg image infarction

EKG

An abnormal (pathologic) “Q” wave measures 0.04 (small box) second or greater in duration, and/or the depth measures greater than or equal to 1/3 height of R wave

Once an MI is completed, the ST segment will return to the baseline and the T wave will return to its normal orientation, but “Q” waves are often the one remaining change to a cardiac complex as evidence that tissue necrosis or tissue death (infarction) has occurred.

12lead ecg image infarction 2


Authors and Sources

Authors and Reviewers


Sources




? v:3 | cc: | tar: False | onAr:0 | onPs:2 | tLb:3 | tLbJs:0
| pv: 1 uStat: False | db:0 | shouldInvoke:False | pu:False | em: | refreshTime: 1/1/0001 12:00:00 AM || now: 7/13/2024 7:11:53 PM | firstPage: True
| statusStg: | cDbLookup# 0



An error has occurred. Please reload the page or visit our other website, Practical Clinical Skills. Reload 🗙