[Cardiac output (echocardiographic determination) in patients with the VVI artificial cardiac pacemaker].
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Biomedical subjects
Publications and source records attributed to G Zagatti.
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The effect on the platelet aggregation of the administration of 6 mg of oxprenolol has been studied in patients suffering from coronary artery disease. Four samples were collected: a control one, at the end, 1 and 5 hours after the end of the infusion. The aggregation has been induced both by ADP and adrenaline. The results are exposed and some pathogenetic hypotesis are suggested.
Considering the increasing importance of cardiac pacing (800-1000 pacemaker patients per million population according to most recent evaluations), the Authors made an investigation on a sample of 100 general practitioners, to evaluate their knowledge on pacemakers. These physicians have been questioned following a form, which resumed the most important problems that can arise in patients with cardiac pacemakers. The conclusion is that the practitioner has little knowledge on cardiac pacing and that he is not able to handle this sort of patient.
During a 24-month period, 37 patients with fascicular blocks (RBB-LAH, alternating bundle-branch block, bundle-branch block with PR prolongation, RBBB-LAH with PR prolongation) were sheduled for operation. The study was undertaken to determine what effect the stress of anesthesia and operation might have on these patients, and to attempt to answer the question whether all patients with fascicular block should have demand pacemakers implanted. All these patients were in stable condition and had no history of transient complete heart block. Patients were monitored continuously intraoperatively and were followed by serial electrocardiograms to the third postoperative day. No instance of complete heart block was found. No significant problem arose both intra- and postoperatively. According to these findings, routine, prophylactic, temporary cardiac pacing in patients with fascicular blocks, before anesthesia and during operation, seems to be not necessary in the absence of cardiac symptoms.
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