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Biomedical subjects

F Robicsek

Publications and source records attributed to F Robicsek.

At least 199 records · Page 11Linked to original sources
PubMed1979

Pectus carinatum.

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Adolescent↗
PubMed1978

Marlex mesh support for the correction of very severe and recurrent pectus excavatum.

A method for the correction of very severe and recurrent pectus excavatum is presented. The technique consists of mobilization of the sternum, transverse osteotomy, parasternal resection of the costal cartilages (modified Ravitch procedure), followed by placement of Marlex mesh behind the sternum and suturing the edge of the Marlex mesh to the peripheral stump of the resected ribs. This method has been used with good results in 6 patients, 2 of them with recurrent deformities.

Adolescent↗
PubMed1978

Electrophysiologic effects of partial coronary flow reduction in the exposed canine heart. Effects of ischemia and ischemic-induced regional hypothermia on refractoriness and conduction delay.

In the open-chested dog, coronary flow reduction results in a decrese of regional myocardial temperature (T). We assessed the contribution of T decrease to changes in refractoriness and conduction delay attributed to ischemia. The independent effect of regional hypothermia on effective refractory period (ERP) was a linear function of the temperature (ERP = -b T +a) with a -r = 0.97 0.02 in 11 dogs. The effect on conduction time of a ventricular premature beat was a linear function of the dog T at both endocardium (-r = 0.95 +/- 0.02) and epicardium (-r = 0.96 +/- 0.01). A 75% reduction in coronary flow resulted in a mean T decrease of 1.0 +/- 0.3 degrees C. The T decrease was sufficient to mask the effects of ischemia on shortening of the ERP. Furthermore, the conduction delay of ventricular premature beats during 75% coronary flow reduction could be accounted for by the decrease in T alone in five of seven dogs. We conclude that changes in refractoriness and conduction during acute coronary flow reduction in the open-chested dog are due to the composite effects of ischemia and the decrease in regional temperature. The open-chested model may have important limitations in understanding the electrophysiologic effects of acute coronary insufficiency. However, it may have important applications in defining the electrophysiologic environment at the time of coronary artery surgery.

Animals↗