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Biomedical subjects

J Rubio Alvarez

Publications and source records attributed to J Rubio Alvarez.

35 records · Page 2Linked to original sources
PubMed1981

A brief comparative study of four disposable bubble oxygenators.

Four widely used bubble oxygenators-the Optiflo I, the Bentley Q 200 A, the Harvey 200, and the Shiley 100 A-were tested and compared in 182 patients undergoing cardiac valve surgery. Fifty-six cases were performed with normothermia and 126 cases incorporated mild hypothermia (28-30 degrees C). There was no significant difference in the average age of the patients (51 yrs) or the perfusion time (60 min). All components of the extracorporeal circuit were identical, and anesthetic regimens and surgical techniques were also similar. In this study, the Shiley 100 A oxygenator was found to be the most suitable for cases requiring mild hypothermia and was generally considered to be the oxygenator of choice.

Journal Article↗
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[Post-infarction left ventricular free wall rupture].

We report four cases of subacute left ventricular free wall rupture after myocardial infarction successfully treated with emergency surgery. Some aspects dealing with clinical presentation, diagnosis and treatment are discussed.

Aged↗
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[Acute and chronic threshholds in epicardial stimulation of the diaphragmatic surface of the right ventricle].

Between March 1974, and November 1979, a total of 244 epicardial electrodes, 29 in the anterior surface and 215 in the right ventricular diaphragmatic surface (RVDS) were implanted using the 212 a left subcostal approach. In 174 consecutive patients (mean age 64 years) a preoperative epicardial electrophysiological study was made (mapping), with measurement of voltage, current, lead impedance and R wave sensing in different zones of right ventricle. A comparative study between two types of sutureless electrodes was realized. In 21 cases, thresholds chronic measurement was made 32 months after implantation. There were one surgical death (0.4%) with a morbidity of 7.4%. The follow-up is 20 months mean. The mapped group has significantly lower thresholds and better sensing than the unmapped group (p 0.001). Chronic thresholds were obtained at pacemaker replacement in 21 cases (average 32 months postimplant) and were much lower in the mapped group. These are in line with the acute studies.

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