title: [ECG changes following balloon dilatation of pulmonary valve stenoses].
abstract: To evaluate the role of electrocardiography in the long-term follow up of children after balloon valvuloplasty of pulmonary stenosis the ECG findings of ten children (4 girls and 6 boys) with a mean age of 7.8 +/- 3.3 years who underwent valvuloplasty of pulmonary stenosis were studied. There was a significant decrease of the gradient across the valve from 61.8 +/- 15.05 mmHg to 24.8 +/- 9.52 mm Hg (p less than 0.001). In all children ECGs were available before dilatation. The frontal plane mean QRS vector moved significantly (p less than 0.02) towards the left from 116.3 +/- 59.86 (67-[-120]) to 86.7 +/- 56.22 (30-[-142]) between three to six months. Further changes between 12 and 24 months after Balloon valvuloplasty of pulmonary stenosis were not significant (71.11 +/- 61.74 (30-[-133])). The sum of the amplitude of RV1 and SV6 (mV) decreased significantly (p less than 0.02) within three to six months from 2.13 +/- 0.64 (1.1-3.1) to 1.53 +/- 0.50 (1-2.3). Later changes within the following 12 to 24 months were not significant (1.2 +/- 0.31 (0.8-1.5)). Since these ECG changes parallel the decrease of the gradient across the pulmonary valve, this would suggest, that besides Doppler-echocardiography ECG seems to have a useful role in the long term follow up of children after valvuloplasty of pulmonary stenosis.
authors.affiliation: King Faisal Specialized Hospital and Research Center, Riyadh, Saudi-Arabien.
authors.forename: O
authors.initials: O
authors.lastname: Galal
authors.forename: J
authors.initials: J
authors.lastname: Hilgenberg
authors.forename: F
authors.initials: F
authors.lastname: Hentrich
authors.forename: U
authors.initials: U
authors.lastname: Neudorf
authors.forename: A A
authors.initials: AA
authors.lastname: Schmaltz
mesh_terms: D000293:Adolescent; D001794:Blood Pressure / Q000502:physiology; D002404:Catheterization; D002648:Child; D002675:Child, Preschool; D015150:Echocardiography, Doppler; D004562:Electrocardiography; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D011666:Pulmonary Valve Stenosis / Q000628:therapy*
vernacular_title: EKG-Veränderungen nach Ballondilatation bei valvulären Pulmonalstenosen.