Search PubMed⌕ Search

Biomedical subjects

Richard E Welling

Publications and source records attributed to Richard E Welling.

4 recordsLinked to original sources
PubMed2003

Professionalism: lifelong commitment for surgeons.

Presently, there is a major initiative to rekindle the humanistic qualities in the practice of medicine. Although there have been many suggestions on ways to rejuvenate this initiative, it has not been a primary focus of graduate medical education until recently. Surgery residents are expected to maintain a high standard of ethical behavior; demonstrate a commitment to continuity of patient care; and demonstrate sensitivity to the age, gender, and culture of patients and fellow health care professionals. We in surgical education must accept the responsibility for the renewal in teaching and evaluating the professional and ethical principles of surgery residents. This change will not happen quickly, but it should be done skillfully because future generations will look back on this time of renewal in medicine and critique us on our ability or inability to achieve this goal.

Ethics, Medical↗
PubMed2002

Radiofrequency ablation of the porcine liver with complete hepatic vascular occlusion.

BACKGROUND: We studied the effects of radiofrequency ablation, relative to hepatic blood flow, on the volume and shape of the resulting tissue necrosis. The extent of necrosis is directly proportional to the size of the electrode and inversely related to blood flow, which dissipates the heat generated. METHODS: Two areas of necrosis were created in each of eight porcine livers, which were assigned to four groups according to blood flow occlusion: no occlusion, occlusion of the hepatic artery and portal vein, occlusion of the hepatic veins, and complete hepatic vascular occlusion. After 25 minutes of liver reperfusion, the animals were euthanized, and the livers were examined. RESULTS: Complete vascular occlusion resulted in the greatest area of necrosis (28.6 +/- 3.4 cm(3)), followed by occlusion of the hepatic artery and portal vein (19.2 +/- 5.9 cm(3)), occlusion of hepatic veins (14.4 +/- 2.6 cm(3)), and no occlusion (4.9 +/- 1.5 cm(3)). The volume of the necrotic areas created during complete vascular occlusion were significantly greater than those created with no occlusion, as well as those created with only the hepatic artery and portal vein occluded (P <.05). CONCLUSIONS: Complete vascular occlusion, combined with radiofrequency ablation, increases the volume of necrosis and creates a more spherical ablative area.

Animals↗
PubMed2002

Blunt injury to the external iliac artery: a case report.

Blunt vascular trauma is rare as compared with penetrating vascular trauma. The incidence of iliac artery injury has been reported as low as 0.4 per cent of total arterial trauma. Iliac artery injury in blunt trauma is rare because of its anatomic location and protection by the pelvis. This article presents a case of external iliac artery injury secondary to blunt trauma. A deceleration-type mechanism is suggested that results in the production of an intimal flap and later vessel thrombosis. We discuss the clinical details of presentation and angiographic diagnosis as well as treatment options.

Abdominal Injuries↗