PMID: 9432571Jun 1, 1997Paper

Late ventricular potentials and acute myocardial infarction

Minerva cardioangiologica
M M MartinelliV Ceci

Abstract

The presence of late ventricular potentials was evaluated in a group of patients following acute myocardial infarction hospitalised in our division. Recordings were made between the 10th and 12th day of the pathology. The criteria for positivity were the presence of three parameters: QRSD > or = 114 msec, LAS 40 > or = 38 msec, RMS 40 < or = 20 mv. These were present in 21 patients (18 males and 3 females). Inferior acute myocardial infarction (AMI) was found to be present in 15 cases, anterior AMI in 4 cases and AMI with an unspecified localisation in 2 cases. The mean duration of qrsd was 122 msec, the mean duration of low amplitude potentials (LAS 40) were 53.5 msec, the mean amplitude of the last 40 msec (RMS 40 was 8.9 mv). In conclusion, the authors affirm that late potentials were present in the majority of patients with inferior AMI and the search for the latter represents an important stage in the post-AMI prognostic stratification. Delta is the positive correlation between late potentials and ventricular tachycardia in postinfarction. This non-invasive test is comparable to electrophysiological induction tests in terms of predictive capacity of arrhythmic event and/or sudden death.

Related Concepts

Related Feeds

Arrhythmia

Arrhythmias are abnormalities in heart rhythms, which can be either too fast or too slow. They can result from abnormalities of the initiation of an impulse or impulse conduction or a combination of both. Here is the latest research on arrhythmias.

Aphasia

Aphasia affects the ability to process language, including formulation and comprehension of language and speech, as well as the ability to read or write. Here is the latest research on aphasia.