A hemostatic vascular cuff.
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Hemostasis↗
Biomedical subjects
B T Williams
Publications and source records attributed to B T Williams.
A removable electromagnetic flow probe: preliminary report.
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Blood Flow Velocity↗
Hypertrophic obstructive cardiomyopathy. The use of a diathermy loop for septal resection.
The report describes the use of diathermy loop to resect the left ventricular component of the hypertrophied septum in hypertrophic obstructive cardiomyopathy (HOCM). The technique is simple to perform and is able to reduce significantly the systolic pressure gradient across the left ventricular outflow tract.
Cardiomyopathy, Hypertrophic↗
Right ventricular myxoma: diagnostic and surgical considerations.
A 26-year-old patient with right ventricular myxoma is reported. He underwent emergency removal of the tumour because of several syncopal episodes. Diagnosis was suspected clinically and confirmed by echocardiography and angiocardiography. The tumour arose from the anterior wall of the right ventricle and was resected with its pedicle. Five years after the operation, the patient is asymptomatic without clinical or echocardiographic evidence of recurrence. The authors underline the need for a close follow-up of patients with cardiac myxoma utilizing the non-invasive technique of echocardiography and emphasize the good early and late results obtained in their patient with surgical removal of the tumour.
Adult↗
The long term effect of intra-aortic balloon counterpulsation on left ventricular performance.
A patient who had had two coronary artery bypass grafts and an aneurysmectomy required intra-aortic balloon pump (IABP) assistance to allow discontinuation of cardiopulmonary bypass (CPBP). An indwelling electromagnetic flow probe on the ascending aorta was used to monitor IABP over the following 8 days of assistance. Stroke volume (SV), Cardiac output (CO), stroke work (SW), and ventricular afterload (VA) were measured directly. Recovery was indicated as the discrepancy between CO and SV on and off IABP decreased. VA depended upon the degree of augmentation. SW bore an incostant relationship to IABP.
Aorta, Thoracic↗