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Biomedical subjects

R A Beg

Publications and source records attributed to R A Beg.

7 recordsLinked to original sources
PubMed1986

Physiological adaptability: the secret of success of the internal mammary artery grafts.

Angiographic studies in 3 patients illustrate the physiological adaptability of internal mammary artery (IMA) grafts. Intact vascular smooth muscle permits the IMA grafts to retain a flexible caliber and a blood flow dictated by myocardial demands in the distribution of the grafted coronary artery. This physiological nature may be one of the reasons for their continued patency regardless of whether they are grafted to large or small coronary arteries. Further, this adaptable behavior permits use of the IMA even if its distal lumen is smaller than that of the recipient coronary artery, provided the anastomosis can be safely performed and the demand for flow is present.

Coronary Disease↗
PubMed1985

Internal mammary retractor.

A new retractor for dissection of internal mammary arteries is described. We have found that the instrument can easily be applied to the chest wall and gives excellent exposure for dissection of the graft from origin to bifurcation.

Coronary Artery Bypass↗
PubMedDate not supplied

Rare metastasis of primary bronchogenic carcinoma to sigmoid colon: report of a case.

The authors present a case of a rare metastasis of bronchogenic carcinoma to sigmoid colon. Carcinoma of the lung usually spreads locally to adjacent mediastinum or paratracheal lymph nodes via the lymphatics. When tumor invades the pulmonary vein, distal metastases are most often to brain, suprarenal glands, or bones. Primary bronchogenic carcinoma has been reported to metastasize to jejunum, maxillary antrum, small bowel, tongue, and rarely to other organs. The authors believe that metastasis to the large intestine is most exceptional. Occurrences of rare metastasis are not well understood, though one theory implicates sites of previous trauma.

Carcinoma, Bronchogenic↗