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Biomedical subjects

G J Reul

Publications and source records attributed to G J Reul.

At least 145 records · Page 8Linked to original sources

Perioperative care of the adult with congenital heart disease in a free-standing tertiary pediatric facility.

Adult patients with congenital heart disease are presenting more frequently for cardiac surgery. Frequently, pediatric congenital heart surgeons perform these procedures at pediatric hospitals. Between July 1995 and June 2000, a retrospective review of adult patients (> or = 18 years old) who had undergone cardiothoracic operations was performed. A total of 112 operations were performed and divided into two groups--81 cardiac operations in 79 patients and 31 noncardiac operations in 23 patients. One patient had a cardiac and noncardiac operation performed. The overall early operative mortality was 6% (6/101). There were 3 late deaths. New-onset cardiac arrhythmias requiring treatment were diagnosed after 5/81 (6%) cardiac operations. Six of 79 (7%) patients were diagnosed with postoperative clinical depression. An acceptable mortality can be achieved when adult patients undergo cardiothoracic operations at a pediatric facility. New-onset arrhythmias necessitating treatment are relatively common, and postoperative clinical depression should be anticipated.

Adolescent↗

Surgical versus medical treatment of coronary artery disease: long-term survival.

In an attempt to answer the question as to whether or not aortocoronary bypass (ACB) does increase life expectancy of patients with coronary artery occlusive disease (CAOD), 4,766 consecutive patients undergoing ACB at the Texas Heart Institute from October, 1969 through June, 1975, were reviewed and followed for five and one half years. Overall early mortality was reduced from 9.7 percent during the first full year (1970) of the study to 3.3 percent during the last full year (1974). Early mortality in males (86.5 percent) was reduced to 3 percent during 1975, but in females only to 8.4 percent. However, late mortality in females was only 2.6 percent as compared to 3.4 percent in males. Long-term survival was similar for both males and females at five and one-half years when early mortality was considered. Males also experienced better symptomatic results than females with 90.3 percent of males remaining asymptomatic, while only 86.6 percent of females remained in this category. Early mortality increased as more vessels were bypassed, but late mortality decreased and symptomatic results improved as more complete revascularization was performed. Only 55 percent of late deaths were cardiac related. Actuarial comparison of this surgical series with the most comparable series in the literature of patients treated medically, demonstrated significant (P less than 0.001) increased survival in the surgical group as compared to medically treated patients at every year up to five and one-half years, for patients with double and triple vessel disease and for the entire series. In those patients with single vessel disease, the survival curves were similar to four years, following which survival was increased in the surgical patients at the end of the fifth and sixth reporting years. In summary, these data appear to suggest that surgical treatment of coronary artery occlusive disease does provide a favorable effect upon life expectancy.

Adult↗

The value of moderate hypothermia during anoxic cardiac arrest for coronary artery surgery.

Anoxic cardiac arrest, as opposed to induced ventricular fibrillation, greatly facilitates accurate distal anastomosis in aortocoronary bypass surgery. In order to diminish the anoxic insult, general and topical hypothermia may be used. In an attempt to establish the value of moderate hypothermia during anoxic cardiac arrest two groups of patients were compared. In group I coronary artery bypass procedures were performed under normothermic conditions with anoxic cardiac arrest. Patients in group II underwent similar procedures but under hypothermic conditions. General body hypothermia to an esophageal temperature of 30 degrees C and topical hypothermia with iced saline lavage were used. Using these techniques, the average intramyocardial temperature was 26 degrees C. Nonfatal cardiac complications did not occur more frequently in the hypothermic group. Operative mortality was decreased from 6.3% in the normothermic group to 1.5% in the hypothermic group. However, in group II, in addition to hypothermia, a second factor in the reduction of mortality was the completeness of the revascularization procedure: 58.5% of the patients had three or more bypass grafts in the hypothermic group. The mean anoxic arrest time was over 50 min for all patients--those who survived as well as those who died with postoperative low cardiac output or myocardial infarction. Therefore, anoxic arrest time should be kept as short as possible and certainly less than 50 min. Intermittent aortic occlusion and performance of the proximal anastomoses using a partial occluding clamp on the aorta are currently being used and, together with moderate hypothermia, provide a further reduction in postoperative myocardial complications.

Arrhythmias, Cardiac↗

Congenital fistulae of the coronary arteries. Clinical considerations and surgical management in 23 patients.

Experience gained during the past 18 years at the Texas Heart Institute in the surgical treatment of 23 patients with coronary artery fistulae is reported. Patients ranged in age from three to 63 years; 18 were women. The right coronary artery was most frequently involved (14 patients) and in 18 patients the fistulous communication was terminal. Cardiac catheterization and angiography were aids in determining the exact diagnosis in all but two patients. During the last three years cardiopulmonary bypass was used in five of eight patients, and it is believed that extracorporeal circulation should be employed routinely. Terminal fistulae were ligated with sutures distally, close to the cardiac chamber. Lateral fistulae, when single, can be closed if feasible by tangential arteriorrhaphy. However, in most of these patients multiple communications and aneurysmal dilatation are encountered which would be treated more successfully by proximal and distal ligation of the fistula and distal coronary bypass revascularization. There were no operative deaths in our series. It is believed that with the help of today's advanced methods in anesthesia, extracorporeal circulation and coronary artery bypass surgery, all patients with coronary artery fistulae, once diagnosis has been made, should undergo surgical treatment.

Adolescent↗

Ischemic myocardial contracture ("stone heart"). A complication of cardiac surgery.

Stone heart or ischemic myocardial contracture is a complication of cardiopulmonary bypass characterized by contracture of the myocardium and inability to obtain cardiac output on manual massage. Stone heart has occurred only during aortic valve replacement and/or coronary artery bypass procedures. Predisposing factors are chronic congestive heart failure and myocardial hypertrophy with fibrosis secondary to longstanding aortic valve disease and/or coronary artery occlusive disease. Although the condition is rare, the outcome is usually fatal. Because of the biochemical and physiological implications of this syndrome, its prevention has been challenging. On the basis of our current concepts, prevention has been afforded by topical and general hypothermia and pretreatment with a small i.v. bolus of propranolol just prior to aortic occlusion. These measures have been utilized in potentially high-risk patients with the predisposition for stone heart and, thus far, the results have been satisfactory. The stone heart syndrome is an entity which should be recognized by all cardiac surgeons. Preventive measures must be aimed at protection of the myocardium during anoxic cardiac arrest.

Cardiac Output↗

Long-term results of the surgical management of symptomatic chronic intestinal ischemia.

We analyzed our surgical experience in 20 patients who underwent revascularization procedures for symptomatic chronic intestinal ischemia caused by atherosclerosis. The group comprised 17 women and 3 men, with an age range of 25 to 71 years (mean 58.6 years). Sixteen patients had postprandial abdominal pain, and 4 had pain not related to eating. The average weight loss was 23.8 lb. Malabsorption and diarrhea were present in 8 patients. The duration of the symptoms was from 4 to 46 months (mean 13.4 months). One patient presented with acute intestinal ischemia following balloon angioplasty reocclusion of a stenotic celiac artery, and 3 underwent surgery for stenosis of a previously placed graft. Five patients had single mesenteric artery involvement, 10 had double-artery involvement, and 5 had significant occlusion in all 3 mesenteric arteries. The major arteries were revascularized whenever technically possible; therefore, 36 arteries were revascularized in 20 patients. Bypass grafts were done in 27 vessels, reimplantation in 7, and endarterectomy with patch angioplasty in 2. The saphenous vein was used in 12 vessels, polytetrafluoroethylene grafts in 8, dacron in 6, and inferior mesenteric vein in 1. The type of revascularization or graft utilized did not affect long-term patency. Two patients had early graft thrombosis and required intestinal resection. All patients survived the operation. At a mean follow-up of 36 months, all 20 patients were alive and asymptomatic with regard to their abdominal complaint. Ten patients (50%) underwent postoperative abdominal angiography; all the grafts were patent.(ABSTRACT TRUNCATED AT 250 WORDS)

Adult↗

Profunda femoral artery pseudoaneurysm after percutaneous transluminal procedures manifested by neuropathy.

The incidence of arterial complications following femoral artery cannulation is low; however, with the increasing number of cardiac diagnostic and interventional procedures, vascular surgeons are being confronted with an increasing number of pseudoaneurysms and arteriovenous fistulas. Swelling and a painful pulsating groin masse are the most frequent presenting symptoms of a common femoral artery false aneurysm. We present the cases of 4 patients who had the unusual finding of a profunda femoral artery pseudoaneurysm after they had undergone cardiac catheterization or percutaneous transluminal coronary angioplasty. The only clinical sign of these patients was femoral neuropathy or neuropalsy caused by femoral nerve compression. Surgical repair of the pseudoaneurysm was successful in all patients. We discuss the reasons for this unusual finding and rare location for a pseudoaneurysm.

Aged↗

Penetrating cardiac injury by wire thrown from a lawn mower.

The first successful surgically treated case of penetrating heart injury, specifically the right ventricle, caused by a fragment of coat hanger wire thrown by a lawn mower, is reported. Though traumatic heart injuries are rare, this case represents accurate surgical management and judgment, especially in the preoperative phase which resulted in early operating and excellent postoperative results. It is our feeling that if the patient can be transferred safely to the operating room the mortality rate is considerably lowered; however, emergency room thoracotomy, which will undoubtedly result in a greater survival rate from these spectacular injuries, should be performed in the emergency center if cardiac activity ceases or the patient's condition deteriorates considerably.

Adult↗