[Percutaneous transluminal coronary angioplasty in patients with multiple coronary involvement. Results and complications].
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Biomedical subjects
Publications and source records attributed to C Crexells.
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Snare retrieval of foreign bodies is a common procedure but in certain cases, location of the foreign body requires another system. We present three cases in which only the use of a pigtail catheter gave a good grip for gentle traction and removal or repositioning of the foreign body. A careful review of the world literature up to December 1982 gave rise to two previous similar reports. Both our experience and that found in the literature seem to suggest that in cases where there are no free ends to snare, pigtail catheters may be the first instrument used to start retrieval.
Transaortic intraluminal angioplasty of the left main coronary artery by Grüntzig's technique has been used intraoperatively in 4 patients who underwent multiple aortocoronary bypasses. Angiographic and clinical results were excellent in 3 of them. It is suggested that this combined technique be used to obtain more complete revascularization at the time of coronary artery bypass. The technique is easy to perform without x-ray facilities in the operating room, and it seems reasonable to assume that it may improve the myocardial blood supply of those areas irrigated by small arteries originating between the stenosed main trunk and other subsequent lesions.
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Iatrogenic coronary artery stenosis as a serious complication of aortic valve procedures is a difficult condition to solve. We present a case in which both ostia were involved. As the patient refused reoperation, percutaneous transluminal coronary angioplasty (PTCA) was used.
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In the following paragraphs we describe a case diagnosed clinically and haemodynamically as a cardiomyopathy. Atrial flutter which was not in evidence in the standard ECG was diagnosed by the use of a new technique of amplification and filtering of special surface leads (T.A.F.). The diagnosis was later confirmed by means of special internal techniques (intra-atrial ECG and His bundle recording). The existence of a subpraventricular rhythm, probably sinusal, and also unapparent in the standard ECG, was observed by using the same method after electrical defibrillation. We comment on the extreme rareness of discovering concealed atrial rhythms and their possible explanation, and we emphasize the usefulness of the T.A.F. technique in their diagnosis.
An analysis of ventricular performance comparing pump function and muscle function indices was performed in 13 patients with acute myocardial infarction, ten patients with normal coronary arteries, and 15 patients with coronary artery disease. Pump function was described by plotting left ventricular stroke work index as a function of left ventricular end diastolic pressure. This description provided a clear separation between normal patients, and surviving and nonsurviving patients with acute myocardial infarction. Values of contractile element velocity (VCE5 as an estimate of Vmax) did not separate between normals and surviving or nonsurviving patients with acute myocardial infarction. In 15 patients with acute coronary artery disease there was no correlation between values of VCE5 and the ventricular function curve. Changes in performance following the stress of ventriculography, angiotensin infusion, or isometric hand grip exercise also did not show any correlation between pump function and muscle function indices. It is concluded that pump function indices are a better indicator of ventricular performance in patients with acute myocardial infarction and coronary artery disease.
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