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Biomedical subjects

J Rohmer

Publications and source records attributed to J Rohmer.

54 records · Page 3Linked to original sources
PubMed1976

Pulmonary valve incompetence. II. Application of electromagnetic flow velocity catheters in children.

During cardiac catheterization in 49 children regurgitant flow through competent and incompetent pulmonary valves was evaluated with electromagnetic flow velocity catheters using the ratio of the separately integrated backward and forward flow velocity signals (vb/vf). When the pulmonary valve was normal, vb/vf was less than or equal to 0.10. After operation for pulmonary valve stenosis or tetralogy of Fallot larger values were often found. In patients with an outflow patch across the pulmonary valve ring vb/vf values of up to 0.54 were found.

Adolescent↗
PubMed1975

Surgical correction of unusual double-outlet right ventricle.

This paper presents the case history of an 8-year-old girl who had total situs inversus and double-outlet right ventricle with pulmonary stenosis and severe tricuspid insufficiency in the presence of dextrocardia with ventricular discordance. A successful repair was performed using the Rastelli technique in conjunction with replacement of the tricuspid valve with a Bjork-Shiley prosthesis. The postoperative course was uneventful, and follow-up catheterization revealed a good operative result. However, the patient died suddenly during an emotionally upsetting period about two months after the operation. Postmortem examination revealed only signs of moderately severe cardiac decompensation. Some anatomical and embryological comments are made.

Aorta↗
PubMedDate not supplied

The vibratory innocent heart murmur in schoolchildren: a case-control Doppler echocardiographic study.

In 810 schoolchildren (aged 5-14 years) the prevalence of a grade 1-3/6 vibratory innocent heart murmur (VIHM) is 41%. Restricted to a grade 2 or 3 VIHM, the prevalence is 14%, decreasing from 21% in the age-class 5-6 years to 8% for children 13-14 years of age. The prevalence of a grade 3 VIHM is 1%. Together with a matched control, 84 children with a grade 2 or 3 VIHM underwent further cardiologic examination including electrocardiography, phonocardiography, and Doppler echocardiography. A positive correlation was found between the presence of a VIHM and higher left ventricular voltages on the ECG, but within the normal range; lower heart rate; smaller diameter of the ascending aorta (AAO); and higher blood flow velocity and higher maximal acceleration of the blood flow in the LVOT and the AAO. In 40% of the children with a VIHM, a systolic aortic valve vibration was seen with a frequency > or = 100 Hz and an amplitude > or = 1 mm, whereas this type of vibration was present in only one case control. No significant difference was found concerning the prevalence of false tendons in the left ventricle, systolic and diastolic diameter of the left ventricle, systolic time intervals, and shortening fraction of the left ventricle. The VIHM is strongly associated with a smaller AAO, with higher velocity and acceleration of the blood flow in the LVOT and AAO, and with a vibratory phenomenon of the aortic valve, pointing towards the LVOT-aortic valve region as the site of origin of the VIHM.

Adolescent↗
PubMedDate not supplied

The vibratory innocent heart murmur in schoolchildren: difference in auscultatory findings between school medical officers and a pediatric cardiologist.

In 810 schoolchildren heart auscultation was performed by both a school medical officer (SMO) and a pediatric cardiologist (PC). The prevalence for a grade 1, 2, or 3 vibratory innocent heart murmur (VIHM), a grade 2 or 3 VIHM, and a grade 3 VIHM heard by the PC was 41%, 13%, and 1%, respectively. The SMO noted such murmurs in 26%, 9%, and 1%, respectively. In 30% of the cases in which the PC had noted a grade 2 or 3 VIHM, the SMO agreed; in 30% of such cases the SMO did not hear any heart murmur. If the PC heard a grade 2 or 3 VIHM phonocardiography was performed in a case-control study in which the controls did not have a heart murmur (94 pairs). In four children with a grade 2 or 3 VIHM no heart murmur could be registered and in three other children the murmur did not have the typical diamond shape. In contrast, in three children without a heart murmur at school a VIHM was seen on the phonocardiogram. In 26 children with a phonocardiographically proven grade 2 or 3 VIHM the SMO did not hear any heart murmur. One child with a grade 3 VIHM (both by the PC and SMO) had a minor subvalvular aortic stenosis. There is quite a difference in auscultatory detection of a venous hum: 9% (PC) and 2% (SMO). The prevalence of the pulmonary ejection murmur is identical at 4%. The carotid bruit is heard in 4% (PC) and 2% (SMO).(ABSTRACT TRUNCATED AT 250 WORDS)

Adolescent↗