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Biomedical subjects

W Meier

Publications and source records attributed to W Meier.

At least 181 records · Page 10Linked to original sources
PubMed1975

[Transoral Doppler ultrasound echography under local anaesthesia for the assessment of vertebral artery blood flow (author's transl)].

Uncalibrated flow in the vertebral arteries was registered with a bidirectional CW Doppler ultrsound apparatus. It was applied to 20 patients, results being compared with aortic arch angiograms in which the extracranial part of all four cerebral vessels was seen. In 14 the vertebral arteries had a symmetrical flow and lumen, a similar symmetrical result being obtained with the Doppler. Hypoplasia of one vertebral artery was present in two patients the distinct asymmetry being recorded by the ultrasound. Three patients with central stenosis in one subclavian artery and subclavian "steal" were found to have reverse flow by the Doppler method in the vertebral artery on the side of the stenosis. Endarterectomy was performed on the affected subclavian artery in two of these patients: post-operative vertebral ultrasound recordings demonstrated a return to physiological flow direction in both vertebral arteries.

Anesthesia, Local↗
PubMed1975

[The effect of aneurysm resection on left ventricular function].

The effect of successful aortocoronary artery bypass surgery on left ventricular (LV) function was studied by angiography in 13 patients with coronary-artery disease and resection of a ventricular aneurysm. The following were calculated from single-plane right anterior oblique LV cine-angiograms: LV end-diastolic volume (EDV), end-systolic volume (ESV), ejection fraction (EF), percentage shortening of the medial perpendicular short axis (deltaM), mean velocity shortening of the circumferential fibres (VCF). The changes in the five hemi-axes of the anterior LV wall, and five of the inferior wall were averaged to give a value for relative anterior wall motion (SMV) and inferior wall motion (SMH). Changes in apical motion (SMS) were calculated from the percentage changes in the base-to-apex axis. The following mean values (x plus or minus s) were obtained four months before and 11 months after aneurysmectomy: EDVI (ml/m2) 154 plus or minus 27 (126 plus or minus 23), ESVI (ml/m2) 107 plus or minus 28 (56 plus or minus 15), SVI (ML/M2) 46.5 plus or minus 12.7 (69.9 plus or minus 23.1), EF (%) 32.6 plus or minus 8.0 (54.6 plus or minus 12.0), SMV (%) 6.1 plus or minus 10.0 (25.0 plus or minus 13.4), SMH (%) 25.9 plus or minus 13.1 (31.2 plus or minus 11.1), SMS (%) 5.1 PLus or minus 3.4 (13.1 plus or minus 4.2). These results indicated significant improvement in ventricular pumping action and wall motion after aneurysm resection and aortacoronary bypass surgery in patients with coronary-artery disease and severe cardiac failure.

Adult↗
PubMed1975

[Clinical observations and angiographic findings before and after aortocoronary benous bypass grafting (author's transl)].

37 patients (mean age 51 +/- 8 years) were investigated clinically, mechanocardiographically and angiocardiographically before and 336 +/- 166 days after implantation of an aortocoronary vein graft. The bypass patency rate was 78%. Postoperatively 57% of the patients were free of symptoms, 35% were improved and 8% unimproved or worse. The postoperative incidence of angina pectoris during exercise testing was significantly lower in the groups with an improved vascularization-index, open vein grafts and a lack of preoperative myocardial infarction. For separating the patients only the vascularization-index and the bypass patency seem to be of value.

Adult↗
PubMed1975

[Observations on surgical technic in inguinal femoral hernia according to McVay].

The technique of the operation first published by MCVAY in 1949 for the treatment of the inguinal and fermoral hernia is briefly described and its advantages, compared with the method of BASSINI, are discussed. The essential factor consists in the use of the fascia transversa abdominis which is sewn on to the ligament of Cooper instead of attaching the musculus obliquus externus to the ligamentum inguinale. The operation demands an accurate knowledge of all the anatomical structures concerned and a strict observance of the technique described.

Herniorrhaphy↗