PubMed Health⌕ Search

SEARCH · PubMed Health

Results for “EXTRASYSTOLE”

Explore indexed PubMed citations for clinical trials, systematic reviews and public health research. Read source abstracts and follow each citation to its original PubMed record.

Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.

At least 829 records · Page 46Linked to original sources
PubMed1979

[Post-extrasystolic potentiation for the study of regional left ventricular asynergy (author's transl)].

In 120 P. with ischemic heart disease, left ventricolar wall motion was analyzed from the left ventriculogram in a regular sinus beat as compared to the first beat following one or more premature ventricular contractions (PExP). The response of asynergic segment to PExP was determined with a qualitative as wall as a quantitative technique. Of a total of 225 asynergic segments, 62% showed a positive response to PExP. In the absence of pathologic Q waves in the electrocardiogram, the response was positive in 77% and negative in 23% of the cases. In the presence of Q waves, PExP was present only in 33% of the cases (p less than 0.001). In respect to the severity of asynergy, 68% of 145 hypokinetic segments and 52% of 80 akinetic-dyskinetic segments responded to PExP; in the presence of pathologic Q waves, the number of positive responses decreased to 36% in the case of segmental hypokinesis, and to 31% in the case of more severe asynergy. The study of PExP has appeared as an useful diagnostic technique, capable of detecting a residual myocardial function in left ventricular asynergic segments, even in the presence of electrocardiographic signs of infarction.

Adult↗