Gastrointestinal complications of vascular surgery.
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Biomedical subjects
Publications and source records attributed to F L Korompai.
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A flexible but rigid-walled nontraumatic cannula has been developed for perfusion of the coronary arteries or visceral branches of the aorta.
The threshold electrical energy for direct ventricular defibrillation was measured in 100 patients whose hypothermic hearts were fibrillated for cardiac operations. In 93 cases 10 joules or less was sufficient, and in 48 of these cases 5 joules or less defibrillated the ventricles. Because a shock of 10 joules defibrillated the heart of most of our patients, we recommend an initial shock of 5 to 10 joules rather than the 20 joules used more commonly. Until the safety margin between defibrillation threshold and damage threshold is established for direct defibrillation, use of shocks with adequate but not excessive strength may avoid unnecessary damage to the myocardium. When hearts refibrillate after defibrillation, it is unnecessary to use higher energy settings for subsequent defibrillation attempts. Instead, an antiarrhythmic drug should be administered and another shock of the same intensity that defibrillated the first time should be applied.
The most appropriate operation for constricting pericardial disease must be selected to provide optimum chance for permanent recovery of myocardial function with minimal morbidity. Our 18 patients demonstrate the changing cause of pericardial constrictive disease and the application of newer surgical treatments. Good results were obtained in 16 patients.
Twelve patients in Sweden and thirteen patients in Houston underwent selective proximal vagotomy or parietal cell vagotomy, respectively, for the treatment of perforated duodenal ulcer. A drainage procedure was performed in four of the former and in none of the latter group of patients. There were no operative complications and no operative deaths. Twenty-two of the patients were followed from six months to four years. No patient has recurrent ulcer, dumping, diarrhea, or other significant gastric symptoms during the follow-up period. At the time of their last follow-up, the results were considered excellent or good in all twenty-two patients. The results of this study suggest that SPV or PCV without drainage may be the method of choice for the definitive treatment of all patients with perforated duodenal ulcer who have no obstruction and no contraindications to an operative procedure of greater magnitude than simple closure.
A modification of the Kocher clamp used for wire closure of the sternum is described. With the clamp applied securely to the individual strands, the wire can be readily twisted; the shorter length of the clamp allows the surgeon a much firmer grip on the wire and saves considerable time during closure.
Treatment of 157 patients with perforated duodenal ulcer has been evaluated. The condition of the patient dictated that 40 be treated by simple closure. In the remaining patients, vagotomy and drainage and vagotomy and hemigastrectomy were performed in a randomized, prospective study. These patients were observed postoperatively for an average of four years. There was one operative death after vagotomy and hemigastrectomy and none after vagotomy and drainage. There were no instances of incapacitating diarrhea in either group, and the frequency of postoperative gastric complaints was essentially the same in both groups. Reoperation was required in three patients after vagotomy and hemigastrectomy. The anticipated advantage of decreased gastric complaints after vagotomy and drainage compared with their frequency after vagotomy and hemigastrectomy in the definitive treatment of perforated duodenal ulcer was not apparent from our study. To provide protection against further ulcer disease and, at the same time, reduce postoperative gastric sequelae, parietal cell vagotomy without drainage was performed and evaluated in 13 patients with perforated duodenal ulcer. The longest follow-up period of these patients was two years. There was no diarrhea, dumping or other significant gastric complaint. Gastric emptying was normal, and no ulcers have recurred. The results were excellent in 11 patients and good in two. Early results suggest this method of treatment may be a satisfactory compromise between the use of simple closure that does not protect patients against recurrent ulcer and the use of vagotomy and hemigastrectomy and vagotomy and drainage which impose increased morbidity and death rates on those patients who might not have had further ulcer disease.
This report describes three instances of severe deterioration in tensile strength of knitted Dacron grafts (Weaveknit) supplied prior to 1969. Similar deterioration has been encountered previously by us and other surgeons. All patients with this type of graft should be re-examined periodically and, if deterioration is detected at operation, the entire graft probably should be replaced. These experiences indicate that further investigation and, possibly, some alteration of the manufacturing process are warranted.
To evaluate the role of coronary bypass treatment of stable angina, 72 patients were randomly divided into surgical and medical groups. They were followed with treadmill tests and repeat catheterization. Anginal symptoms decreased or disappeared in 89 per cent of those operated on and 65 per cent of those not operated on, but more of the former than of the latter became asymptomatic: 69 vs. 11 per cent respectively (p smaller than 0.01). Exercise tolerance time improved significantly (p smaller than 0.001) in both groups, but more in the group operated on, plus 78 per cent vs. plus 48 per cent, p smaller than 0.05. During a 28-month follow-up period, fewer cardiac complications occurred in the patients operated on--14 vs. 34 (p smaller than 0.02). Mortality was 9 per cent in the patients operated on and 14 per cent in those not operated on; this difference is not significant. The results indicate that improvement, though demonstrable in both groups, is greater with surgery, and quality of life during the first 28 months is better in patients who are operated on.
A patient was seen with a widened mediastinum following rapid deceleration injury. A retograde angiogram showed rupture of the transverse aortic arch and occlusion of the origin of the innominate artery. At operation cardiopulmonary bypass with systemic, cerebral, and myocardial preservation were used to provide a safe approach for inserting a graft to successfully restore normal circulation.
A patient with severe mitral insufficiency due to infiltration of the valve and myocardium by leukemic lymphocytes is presented. Treatment was replacement of the valve with a prosthesis. The significance of this patient lies in the rarity of the clinical state and the novelty of treatment.
When renal failure complicates postoperative recovery in any operative procedure, the mortality is expected to double. To avoid this complication, a technique was devised to preserve renal perfusion during resection of a thoracoabdominal aneurysm. With systemic heparinization, an extravascular shunt is placed between the descending aorta and the visceral branches; any blood loss is recovered by autotransfusion. After completion of the operation and reversal of heparinization, the normal clotting mechanism is restored by terminal reinfusion of 2 units of autogenous blood that had been collected and stored before heparinization.
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