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Biomedical subjects

H Dardik

Publications and source records attributed to H Dardik.

At least 109 records · Page 6Linked to original sources
PubMed1976

Revascularization of the peroneal artery.

In the absence of a suitable popliteal or tibial arterial system with direct communication to a pedal arch, the peroneal artery may be used for distal anastomosis with the expectation of achieving patency rates exceeding 60 per cent. Morbidity can be minimized by careful patient selection and by imporved surgical technique and materials. In 14 of 23 peroneal bypasses, patency was maintained compared with 27 to 35 bypasses to the tibial artery system. Limb salvage was 57 per cent for th peroneal artery group compared with 71 per cent for tibial artery reconstruction.

Arteries↗
PubMed1975

Routine intraoperative angiography. An essential adjunct in vascular surgery.

Intraoperative angiography was performed during a variety of 155 arterial reconstructive procedures including bypass, endarterectomy, embolectomy, thrombectomy, primary reconstruction, and angioplasty. In 27 or 17% of these cases, defects were identified that could be corrected. These included technical errors at the suture line, accumulation of platelet thrombus and atherosclerotic debris, or unrecognized lesions in the runoff. The likelihood of identifying such lesions is greatest in patients undergoing bypass surgery, particularly when the distal anastomosis involves one of the leg arteries. Routine use of intraoperative angiography as an adjunct to vascular surgery is justified and will help to obviate many early graft failures.

Aneurysm↗
PubMed1975

Total pancreatectomy with primary mesenteric vascular reconstruction.

Total pancreaticoduodenectomy with resection of the superior mesenteric artery and vein was performed in a sixty-two year old man with islet cell carcinoma of the pancreas. Arterial reconstruction was accomplished with an aortomesenteric interposition Dacron graft. The venous system was reanastomosed primarily, the infrapancreatic superior mesenteric vein to the portal vein in the hepatic hilum. This procedure, although it did not result in long-term survival, demonstrates the technical feasibility of wide regional resection for tumors of the pancreas impinging upon the mesenteric vasculature in the region of the neck and uncinate process.

Adenoma, Islet Cell↗
PubMed1975

Patient selection and improved technical factors in small-vessel bypass procedures of the lower extremity.

Thirty-two small-vessel bypasses were constructed as limb-salvage procedures. The one month patency rate was 72 percent and the one year cumulative patency rate was 55 percent. Preoperative, intraoperative, and postoperative angiography was performed in most cases and the results correlated with the ultimate fate of the graft. Preoperative angiography is critical in determining the location of a suitable small vessel, including the peroneal artery, and the quality of the runoff. Intraoperative angiography is required to delineate correctable intraoperative defects usually appearing at the distal anastomotic area. Additionally, failure to demonstrate runoff or a pedal arch can help support a decision not to re-explore a graft should early closure occur. Postoperative angiography is essential to validate clinical success with graft patency and function. It also serves to discover potential graft defects that might otherwise lead to closure and potential limb loss. Selected cases of failed small-vessel bypass grafts may be salvaged by thrombectomy with or without graft revision. Small-vessel bypass is generally contraindicated if there is extensive tissue necrosis and infection extending into the proximal foot. In cases where the necrotizing infection is localized, particularly to the forefoot, then open drainage, debridement, or amputation should be performed together with small-vessel bypass. Finally, the risks indigenous to small-vessel bypass procedures demand optimal patient selection and exquisite operative technique.

Amputation, Surgical↗
PubMed1974

Arterial reconstruction with a modified collagen tube: a clinical experience.

Twenty-one modified bovine grafts were implanted in a variety of arterial reconstructions. Successful clinical results were obtained in 60% of the survivors. Attention is directed, however, to the problems of difficulty in reexplorations, the lack of elasticity, and aneurysm development indigenous to the bovine graft. One infection in this series required graft removal and extra-anatomic bypass. The modified bovine graft represents a major advance in vascular reconstruction, but should not be accepted as the ideal arterial prosthesis.

Aneurysm↗