Kari Ala-Kulju

Aneurysms after patch graft aortoplasty for coarctation of the aorta: Long-term results of surgical management

Twenty-two (32.8%) of 67 patients who had patch graft aortoplasty for aortic coarctation underwent reoperation because of aneurysm formation opposite or at the site of the patch. The mean age at primary repair was 25.3 years (standard deviation, 9.5 years). Reoperation took place 12.3 years (standard deviation, 3.7 years) later. In 19 patients, the aneurysm was resected and the aorta reconstructed with a tubular prosthesis. In 3 patients, the aneurysm was given external support. There were no hospital deaths. Recurrent nerve paralysis (36%) and bleeding necessitating repeat thoracotomy (32%) were the most common complications. Mean follow-up was 4.6 years. No aneurysms developed at the site of reoperation. Two patients died of causes not related to reoperation. Reconstruction with a tubular prosthesis gives good long-term results in patients with aneurysm formation after patch grafting for coarctation. External support offers technical advantages in select patients. Close follow-up of patients who have coarctation repair with a patch graft is essential.

Diagnosis and treatment of subclavian artery aneurysms

The diagnostic features and operative results in 13 patients with subclavian artery aneurysms were analysed. Symptoms related to subclavian artery aneurysms were present in seven patients, whereas six patients were asymptomatic and the aneurysm was discovered incidentally on chest X-ray. Angiography was the most valuable diagnostic examination and was also necessary in planning the operation. A correct preoperative diagnosis was made in five of six patients with computed tomography. Resection of the aneurysm was performed in nine and aneurysmal exclusion in the latest four patients. Direct reconstruction was used in nine and in four cases an extra-anatomic carotico-subclavian bypass was performed. Postoperative complications arose in two symptomatic and in four asymptomatic patients (46%: two strokes, two wound infections demanding extirpation of the prosthesis in one patient, two pareses of the recurrent nerve and one postoperative haemorrhage). Operative mortality was one patient. Follow-up data was available for all patients for periods of 6 months to 14 years. The vascular graft was patent in all patients. The authors conclude that subclavian artery aneurysm must be included in the differential diagnosis of all obscure upper mediastinal masses as seen on the chest X-ray and examined with CT and angiography. Exclusion of the aneurysm with extra-anatomical reconstruction is technically easier and gives the same postoperative long-term results as resection of the aneurysm and direct reconstruction. A relatively high complication rate after operation on asymptomatic subclavian aneurysms indicates a need for re-evaluation of operative indications in asymptomatic patients.

Congenital Esophageal Cysts in Adults

Sixteen adult patients with congenital esophageal cysts were operated on between 1957 and 1979. Preoperatively, 7 patients (44%) were asymptomatic and the cyst was found incidentally on a routine chest roentgenogram. Esophageal symptoms were present in only 3 patients (19%), whereas most symptomatic patients had precordial sensations or arrhythmias. A correct preoperative diagnosis was made in only 1 patient. After enucleation of the cyst, preoperative symptoms were alleviated in all patients and short-term results were excellent. However, long-term follow-up 13.2 +/- 5.6 (+/- standard deviation) years later revealed moderate reflux in 9 (64%) of the surviving 14 patients. During esophagoscopy, macroscopic esophagitis was found in 12 (92%) of 13 patients. On histological examination of specimens obtained by forceps biopsy, esophagitis was present in 10 (77%) of 13 patients and included Barrett esophagus in 2. We conclude that, despite excellent early results, long-term follow-up of patients who undergo operation for congenital esophageal cysts is indicated because of the increased incidence of reflux esophagitis.

Abdominal complications following cardiopulmonary bypass in open-heart surgery

Open-heart surgery was performed on 1686 adult patients between 1980 and 1984, with a mortality rate due to abdominal complications of 0.6%. Every operation involved the use of cardiopulmonary bypass (CPB). Abdominal complications occurred in 1.6%, with an overall mortality rate of 36%. The most frequent complication was gastrointestinal (Gl) bleeding (61%). The mortality of the patients who bled from the Gl tract was 53%. Other complications encountered were gastroduodenal ulcer, colitis, ileus, subphrenic abscess and intraperitoneal bleeding. Prolonged CPB and low output syndrome preceded multiple organ failure, which occurred in 39% of those who had abdominal complications and in 59% of those who bled. Gl bleeding after CPB did not correlate with a previous history of gastric ulcer. Reoperation because of cardiac tamponade or excessive chest tube drainage was a factor predisposing to Gl bleeding. The mortality and abdominal complication rates were significantly higher in valve surgery than in coronary revascularization.

Hematuria is an indication of rupture of an abdominal aortic aneurysm into the vena cava

During a period of 13 years 11 patients were operated on because of a spontaneous aortocaval fistula caused by a ruptured abdominal aortic aneurysm. The classic diagnostic signs of an aortocaval fistula (pulsatile abdominal mass with bruit and high output heart failure) were present in approximately half of the patients, whereas hematuria was a constant finding in all patients. Six patients had macrohematuria, and five had microhematuria. Seven patients (64% survived, and four had postoperative complications: 1 ileus, 2 postoperative pneumonias, 2 deep venous thrombosis, 1 postoperative hemorrhage. The mean operative blood loss was 7 L. After operation the average follow-up time was 4 years. In four patients who died the perioperative (within 30 days) causes of death were renal failure, a bleeding duodenal carcinoma, myocardial infarction, and operative bleeding. It is concluded that hematuria is a more frequent finding than earlier assumed among patients whose abdominal aortic aneurysm has ruptured into the vena cava. The presence of hematuria in a patient suffering from an abdominal aortic aneurysm is an indication for aortography to rule out an aortocaval fistula.

MORPHOLOGICAL AND HISTOPATHOLOGICAL ASPECTS OF ANEURYSMS AFTER PATCH AORTOPLASTY FOR COARCTATION

Repair of coarctation of the aorta by synthetic patch grafting has been complicated by late aneurysm formation. These aneurysms differ macroscopically from atherosclerotic thoracic aortic dilatations. Specimens for microscopic examination were taken from 14 of 20 patients undergoing aneurysm resection. Histological analysis of the specimens showed medionecrosis in 13 patients of the specimens showed medionecrosis in 13 patients (93%), foreign body reaction in 11 patients (78%), and intimal thickening in 3 patients (21%). The three layers of the aortic wall could be identified in the aneurysms. On the basis of these results, we discuss the etiologic factors and pathogenetic mechanisms involved in the development of these aneurysms.

Traumatic rupture of the right hemidiaphragm

Sixteen cases of traumatic disruption of the right hemidiaphragm are presented. Six tears were treated in the acute post-trauma phase and ten were detected from late manifestations. The causal trauma was penetrating in 11 cases and blunt in five. Rupture of the right hemidiaphragm not uncommonly occurs without serious associated injuries. Bowel often herniates through such tears, unhindered by the liver, though the liver is the most commonly herniating organ. No recurrence of hernia was found after standard repair techniques (mean follow-up 5.2 years). Three of the 16 patients died, one from associated injury, one from strangulation of herniated bowel and one from postoperative myocardial infarction. To demonstrate diaphragmatic tearing and subsequent organ herniation, serial chest radiographs and computed tomography are useful, and exploratory laporotomy should be done without delay after penetrating injury to the trunk. The treatment of diaphragmatic tear is surgical, with better results from early than from late repair.

Primary tumours of the ribs

Thirty-four primary rib tumours (24 benign, 10 malignant) were surgically treated in 1966-1985. The mean age was higher and the tumour diameter was greater in the patients with malignant, than in those with benign neoplasm. The benign tumours were excised without operative death. At follow-up after a mean of 12.3 years there was no recurrence of benign growth, but in two cases with initial diagnosis of chondroma a regrowth at the same site proved to be chondrosarcoma. Among the cases of malignant tumour there was one operative death from pulmonary embolism, after radical resection of sarcoma. None of the four patients with chondrosarcoma had recurrence 6-13 years after surgery. There was no long-term survival among the patients with other forms of sarcoma or malignant tumour of the reticuloendothelial system.

Long-term results of direct aortoplasty for repair of aortic coarctation in adults

The long-term results of 14 adult patients who underwent a direct aortoplasty for aortic coarctation were reviewed. The mean age of the patients at operation was 31.5 years. Three of the patients died; 1 died perioperatively, and 2 died later of cardiovascular disease. The survivors were followed for 15.8 years. None of the patients had complications at the site of coarctation repair. This contrasts with our earlier findings on patch graft aortoplasties, which showed a high incidence of postoperative aneurysm at the repair site. The etiology of these aneurysms is discussed with reference to the information provided by the present study.

One-stage Vascular Surgery for Abdominal Aortic Aneurysm Infected by Salmonella

A case is presented of abdominal aortic aneurysm infected with salmonella enteritidis, maintaining septicaemia. Immediate surgery became necessary because of imminent rupture of the aneurysm. The infected thrombus within the aneurysmal sac was debrided, with irrigation of antibiotic solution, and in situ aorto-iliac reconstruction was carried out. A prolonged course of ciprofloxacine and a short course of vancomycin were administered. Recovery was uneventful. The infection parameters are normal 6 months postoperatively and CT-scan shows no signs of periprosthetic infection. The relevant literature concerning the surgical procedures for mycotic aneurysms is reviewed.