TITLE

P WAVE CHANGES AFTER OPEN HEART MITRAL COMMISSUROTOMY FOR ISOLATED MITRAL STENOSIS

AUTHOR(S)
Calatayud, Juan B.
PUB. DATE
April 1968
SOURCE
Angiology;Apr1968, Vol. 19 Issue 4, p238
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
A group of 50 patients with isolated mitral stenosis underwent open heart mitral commisurotomy. All cases remained in normal sinus rhythm after valvotomy. The mean age was 37 years (range, 19-58 years). Thirty-nine (78%) were females and 11 (22%) males. Routine laboratory tests. X-rays and 12-lead ECGs were analyzed before and after operation. The 50 cases were divided into two groups: group A (33 cases) includes the patients with postoperative improvement; group B (17 cases), patients with no improvement or deterioration. The incidence of several criteria for P wave and left atrial abnormalities was obtained in the gree groups (A, B, and Total before and after surgery. The incidence of all the criteria for P wave and left atrial abnormalities decreased in the postoperative period. The criterion P wave 0.12 sec. or more demonstrated the greatest postoperative decrease (26%). Group A improvement) demonstrated a greater postoperative normalization of all the P wave parameters than group B( no improvement). Significant changes in group A consisted of a decrease in the P duration from 0.12 to 0.10 sec. (p < 0.001) and P amplitude from 0.18 to 0.14 mv (p < 0.001). Decreases were smaller and not statistically significant in group B. These findings suggest that a decrease in P wave amplitude of 0.05 mv or more and P wave duration of 0.02 sec. or more are associated with objective clinical improvement after open heart mitral commissurotomy.
ACCESSION #
16378276

 

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