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Query: UMLS:C0162871 (abdominal aortic aneurysm)
 8,664 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

This study reviews our experience with duplex ultrasound arterial mapping (DUAM) for preoperative evaluation in 466 patients (262 men) who underwent 485 lower extremity revascularization procedures from January 1, 1998 to May 30, 2001. Preoperative imaging consisted of DUAM alone in 449 procedures and DUAM and contrast angiography (CA) in 36. An attempt to image from the distal aorta to the pedal arteries was made in all the patients. The selection of optimal inflow and outflow bypasses anastomotic sites was based on a schematic drawing following DUAM examination. Inflow disease was also assessed by intraoperative pressure gradient (IPG) between the distal anastomosis and radial arteries, and completion arteriography of the runoff vessels was obtained, which was correlated with the preoperative findings. Indications for surgery were severe claudication in 91 (19%) limbs, tissue loss in 197 (40%), rest pain in 113 (23%), acute ischemia in 46 (10%), popliteal aneurysm in 18 (4%), superficial femoral artery aneurysm in 1, abdominal aortic aneurysm with claudication in 1, and failing graft in 18 (4%). Age ranged from 30 to 97 years (mean 72 +/- 12 (SD) years) and risk factors such as diabetes, hypertension, use of tobacco, coronary artery disease, and end-stage renal disease were present in 45%, 45%, 44%, 44%, and 13% of the patients, respectively. One hundred twenty-one (25%) limbs had at least 1 previous ipsilateral revascularization. The mean DUAM time was 66 +/- 20 (SD) min (30-150 min). Additional preoperative imaging was deemed necessary in 36 cases due to extensive ulcers, edema, severe arterial wall calcification, and very poor runoff. The distal anastomosis was to the popliteal artery in 173 cases and to the tibial and pedal arteries in 255. Inflow procedures to the femoral arteries, embolectomy, thrombectomy, balloon angioplasty, and patch angioplasty accounted for the remaining 57 cases. Overall, 6-, 12-, and -24- month secondary patency rates were 86%, 80%, and 66%, respectively. This early experience shows that high-quality arterial ultrasonography performed by a highly skilled vascular technologist may represent an alternative to conventional arteriography for patients in need of lower extremity revascularization. Because of limitations inherent to the technique and very poor runoff observed on ultrasonographic examination, additional preoperative imaging procedure's are needed for certain patients.
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PMID:Lower extremity revascularization without preoperative contrast arteriography: experience with duplex ultrasound arterial mapping in 485 cases. 1190 14

One-stage surgical management of concomitant abdominal aortic aneurysm (AAA) and gastric or colorectal cancer should provide certain benefits. We reviewed the records of 21 patients with both AAA and gastric or colorectal cancer who underwent one-stage surgical management. Four had distal gastrectomy, 2 had total gastrectomy, and 5 had abdominoperineal rectal resection transperitoneally; 3 had total gastrectomy transperitoneally and AAA repair extraperitoneally. Two underwent right hemicolectomy and thromboexclusion of the AAA. Two had creation of a temporary ileostomy and implantation of an interposition graft. Two underwent left hemicolectomy, creation of a temporary transversostomy, and implantation of an interposition graft. One had a Hartmann's procedure and implantation of a bifurcated prosthetic interposition graft for AAA. There were no operative deaths or serious postoperative complications. One patient had colorectal ischemia that resolved with conservative treatment. Eighteen of the 21 patients (85.7%) were alive 10 months to 14 years postoperatively. In conclusion, one-stage surgical treatment of concomitant AAA and gastric or colorectal cancer is well tolerated and can avoid the time, financial costs, and patient anxiety involved in a second operation.
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PMID:One-stage surgical management of concomitant abdominal aortic aneurysm and gastric or colorectal cancer. 1191 Apr 75

The necessity of operative treatment of abdominal aortic aneurysm (AAA) is reported in an increasing number of patients after renal transplantation as a result of improved renal graft long-term survival. In these patients, aortic surgery however, places the allograft at risk for ischemic damage. We present a first case of AAA stenting in a kidney-grafted patient. This procedure helped us avoid ischemia of the graft, which showed excellent function pre- and postoperatively. The patient had an uneventful recovery with no evidence of renal dysfunction and was discharged in good condition 7 days after stenting. This case demonstrates a useful alternative for the repair of AAA in kidney-grafted patients.
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PMID:Stent graft of abdominal aortic aneurysm after renal transplantation. 1197 56

Myocardial infarction remains the leading cause of early and late death after abdominal aortic aneurysm (AAA) repair. Myocardial revascularization is staged either before or concomitant with AAA resection, but results are far from uniform. We retrospectively analyzed our experience with patients who underwent concomitant AAA resection and aortocoronary bypass (ACB) to examine the factors affecting early morbidity/mortality and early results. Forty-two patients (all men; mean age, 67.2 years) underwent simultaneous ACB grafting and AAA repair between 1975 and 1998. All were managed postoperatively in the cardiothoracic intensive care unit (mean stay, 6.1 days). The mean total hospital stay was 17.2 days. Two died in the early postoperative period (4.8%): 1 of sustained myocardial failure following a third ACB, and 1 of coagulopathy after concomitant ACB, aortic valve replacement, and AAA. One patient developed a nonfatal MI on postoperative day 3. The incidence of wound and bleeding complications was higher for patients undergoing both ACB and AAA repair than for patients undergoing AAA resection alone. On follow-up (mean, 10 years; range, 7 months to 15 years), only 2 of 10 late deaths were due to cardiovascular causes. We believe that concomitant myocardial revascularization is warranted in select patients requiring elective or urgent AAA resection in order to decrease perioperative risk and improve late survival. Cardiac failure or ischemia during aortic surgery can be prevented by proper perfusion with or without cardiopulmonary bypass. In patients undergoing simultaneous procedures, the increased risk is related to the severity of the vascular and coronary artery disease and not to the combined operations.
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PMID:Outcome after simultaneous abdominal aortic aneurysm repair and aortocoronary bypass. 1198 88

OBJECTIVE To investigate the etiology, prevention and treatment of colon ischemia after operation for abdominal aortic aneurysm (AAA). METHOD Seven of 140 cases complicated with colon ischemia who had received AAA operation were analyzed retrospectively. RESULTS Three cases underwent emergency operation. The seven cases were subjected to removal of AAA, implantation of prosthesis, and ligation of the inferior mesenteric artery. Two cases had the ligation of the bilateral internal iliac artery (IIA). Epilateral IIA was ligated in 2 cases. Bowel resection was carried out in 3 cases, 1 of which received reconstruction of the inferior mesenteric artery (IMA). Three cases received conservative therapy, but died from multiply organ failure. CONCLUSION Correct prevention and management of colon ischemia can effectively reduce the operative morbidity of AAA patients.
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PMID:[Clinical analysis of colon ischemia complicating with operated abdominal aortic aneurysm]. 1213 95

A 70-year-old woman with Marfan syndrome had undergone Y-graft replacement for abdominal aortic aneurysm at the age of 61. She recently underwent axillo-bifemoral bypass to treat ischemia of the lower extremities caused by acute aortic dissection. The patient was admitted for surgical treatment to treat a remaining dissecting descending aortic aneurysm. Aortography revealed that the entry was present at the takeoff of the left subclavian artery, and that the false lumen extended up the proximal anastomosis of the Y-graft to where the true lumen ended. All the abdominal vessels originated from this false lumen, with the lower extremities being supplied via an axillo-bifemoral bypass. No re-entry was detected. Replacement of the descending aorta was carried out using a 28 mm woven Dacron graft. First, double-barreled distal anastomosis under single clamping was performed; then, proximal anastomosis was carried out under antegrade perfusion from the graft to shorten the ischemic time of the abdominal organs. The patient suffered no postoperative complications.
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PMID:[The use of a circulatory assistance device during replacement of descending aorta to treat chronic aortic dissection; report of a case]. 1217 61

In an effort to identify preoperative and perioperative factors impacting outcome in repair of juxtarenal abdominal aortic aneurysm (JRAAA), hospital records and CT scans (for calcification, intraluminal thrombus, and aortic diameter) of all patients undergoing JRAAA repair over the past 10 years were reviewed. The 87 men and 25 women had a mean age of 72, and a mean maximal aortic diameter of 6.2 cm. Renal artery stenosis (RAS) and iliac disease were present in 13 (11%) and 40 patients (35%), respectively. Comorbidities included coronary artery disease (n = 49, 44%), COPD (n = 28, 25%), diabetes mellitus (n = 10, 9%), and preoperative renal insufficiency (PRI; Cr >1.4 mg/dL; n = 14, 12%). A midline incision was used in most of the patients (n = 98, 88%). The proximal aortic clamp was placed in the supraceliac (SC) position in 92 (82%) patients, and directly above one or both renal arteries in 20 (18%) patients. The overall mortality was 6% (n = 7). Cardiac complications occurred in 26 patients (23%); pulmonary, in 22 (20%); renal, in 14 (12%); and gastrointestinal, in 10 (9%). No patient experienced mesenteric ischemia. Mean elevation in creatinine was greater in patients with PRI (1.8 mg/dL vs. 0.13 mg/dL, p = 0.04). Mean blood loss (EBL) was 2701 +/- 189 cc, and mean LOS was 16.1 +/- 1.7 days. Age >70 was associated with increased length of stay (LOS) (12.1 days vs. 18.6 days, p = 0.05) and higher mortality (0 vs. 10%, p = 0.02); otherwise there were no significant relationships between pre- and perioperative parameters and any of the measured outcomes including death, postoperative RI, and LOS. Preferential SC clamping may substantially reduce complications of JRAAA repair (such as mesenteric and renal ischemia) related to proximal cuff disease, but cannot overcome the deleterious affects of advanced age and PRI.
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PMID:Optimal operative strategies in repair of juxtarenal abdominal aortic aneurysms. 1252

Paraplegia or paraparesis secondary to spinal cord ischemia is an extremely rare complication after elective repair of abdominal aortic aneurysm. We report delayed paraparesis after endovascular abdominal aortic aneurysm repair in which one hypogastric artery was unintentionally occluded due to atheroembolism. A spinal catheter was immediately inserted after onset of paraplegia to promote cerebrospinal fluid drainage, which partially reversed the neurologic deficit. Our case underscores both the importance of the critical spinal collateral supply from the hypogastric artery and the role of spinal fluid drainage to maximize spinal cord perfusion in the setting of spinal cord ischemia.
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PMID:Delayed neurologic deficit after endovascular abdominal aortic aneurysm repair. 1261 14

A 48-year-old man was scheduled for repair of mycotic abdominal aortic aneurysm. Extraanatomic bypass was performed due to infection of the aneurysm. General anesthesia combined with continuous epidural anesthesia was performed. In spite of severe blood loss, hemodynamic state was stable during anesthesia and postoperative period. He was managed in the intensive care unit without any complication. In this anesthetic management, it is very important to maintain adequate cardiac output and circulating blood volume to prevent visceral ischemia.
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PMID:[Anesthetic management for infected abdominal aneurysm]. 1279 32

A 74-year-old man in shock was transferred to our hospital. A ruptured abdominal aortic aneurysm was diagnosed by computed tomography and an emergency operation was thereafter performed. At operation, a massive hematoma was encountered in the retroperitoneal space and a standard aneurysmectomy with bifurcated graft replacement was carried out. At the end of the operation, signs of sigmoid colonic ischemia were recognized, including mild discoloration and bowel spasm. After considering the recovery or deterioration from colonic ischemia, we chose to exteriorize the sigmoid colon. On the 4th postoperative day, patchy ischemic areas of an elevated sigmoid colon were noticed to worsen and as a result, we were forced to perform a sigmoid colectomy with end colostomy. Thereafter, the patient developed multisystem organ failure, but he recovered gradually. The patient was discharged from the hospital 3 months after the initial operation. As a complication after surgery for abdominal aortic aneurysms, colonic ischemia remains a serious problem, especially in cases of ruptured AAA. It is generally better to avoid an operation for both abdominal aortic aneurysms and a colon resection at the same time. In this case, an exteriorization of the sigmoid colon was selected for the 1st operation in order to treat a ruptured abdominal aortic aneurysm. This surgical modality was found to be useful for making a correct diagnosis of colonic ischemia before the perforation, while a 2nd look operation for colonic ischemia could thus be performed under conditions of a reduced risk of infection to the prosthetic graft. These operative procedures were considered to be important factors in saving the patient's life.
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PMID:Sigmoid colon exteriorization after ruptured abdominal aortic aneurysm. 1281 96


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