Repair of aortic false aneurysm using deep hypothermia and circulatory arrest.
BACKGROUND
Aortic false aneurysms are a rare complication of surgery of the aorta that can occur several months to years after the initial operation. We reviewed our results with false aneurysm repair using deep hypothermia and circulatory arrest.


METHODS
Eleven patients were reoperated on for false aneurysm of either the ascending or descending thoracic aorta. Femorofemoral cardiopulmonary bypass with full-dose aprotinin and a heparinized system was used in all patients. Hypothermic circulatory arrest at an average of 20 degrees C was instituted in all patients for repair. Six patients had a patch repair with either polyethylene terephthalate fiber (Dacron) or bovine pericardium, 4 had tube replacement of the aorta, and 1 had primary repair of the defect.


RESULTS
Three patients had false aneurysm formation at a site of coarctation repair in the descending aorta, and the 8 others had false aneurysms in the ascending aorta at the site of a previous aortotomy. Six patients had proven infection as the cause; the causative agent was Staphylococcus species in all cases. Mean cardiopulmonary bypass time was 178 +/- 51 minutes, and circulatory arrest time averaged 39 +/- 18 minutes. Operative mortality was 18% (2 of 11); the cause of death was cardiogenic shock in both patients. The mean time to extubation in survivors was 5 days, and the average time to discharge was 16 days.


CONCLUSIONS
Although mediastinal infection is a common cause, aortic false aneurysms can be safely approached using femorofemoral cardiopulmonary bypass, hypothermic circulatory arrest, and patch repair with acceptable operative mortality and long-term survival.
Dumont
Eric
E
Department of Surgery, Research Center of the Montreal Heart Institute and the University of Montreal, Montreal, Quebec, Canada.
Carrier
Michel
M
Cartier
Raymond
R
Pellerin
Michel
M
Poirier
Nancy
N
Bouchard
Denis
D
Perrault
Louis P
LP
D000328:Adult; D000368:Aged; D017541:Aneurysm, False / Q000601:surgery*; D001011:Aorta / Q000601:surgery*; D001013:Aorta, Thoracic / Q000601:surgery*; D001017:Aortic Coarctation / Q000601:surgery; D001025:Aortitis / Q000150:complications / Q000382:microbiology; D001705:Bioprosthesis; D002315:Cardiopulmonary Bypass; D005260:Female; D006324:Heart Arrest, Induced; D006801:Humans; D007036:Hypothermia, Induced; D007902:Length of Stay; D008297:Male; D008480:Mediastinitis / Q000150:complications / Q000382:microbiology; D008875:Middle Aged; D011093:Polyethylene Terephthalates; D011183:Postoperative Complications / Q000209:etiology / Q000401:mortality / Q000601:surgery*; D012189:Retrospective Studies; D013203:Staphylococcal Infections / Q000150:complications; D013211:Staphylococcus aureus; D013212:Staphylococcus epidermidis; D013530:Surgical Wound Infection / Q000150:complications; D016019:Survival Analysis; D016896:Treatment Outcome
D011093:Polyethylene Terephthalates