Related Experiment Videos
Vascular complications associated with spontaneous aortic dissection
R P Cambria1, D C Brewster, J Gertler
1Surgical Service, Massachusetts General Hospital, Boston 02114.
Insights
Spontaneous aortic dissection with noncardiac vascular complications significantly increases mortality. Early intervention for aortic branch compromise is crucial for improving patient outcomes.
Area of Science:
- Cardiovascular Surgery
- Vascular Surgery
- Aortic Diseases
Background:
- Spontaneous aortic dissection is a life-threatening condition.
- Aortic branch compromise is a frequent complication with significant morbidity and mortality.
- Management strategies for aortic branch compromise require further investigation.
Purpose of the Study:
- To assess the incidence, morbid sequelae, and management of aortic branch compromise in spontaneous aortic dissection.
- To evaluate the impact of noncardiac vascular complications on mortality.
- To analyze the effectiveness of surgical interventions for specific aortic branch occlusions.
Main Methods:
- Retrospective review of 325 cases of spontaneous aortic dissection.
- Data collection on noncardiac vascular complications, mortality rates, and surgical interventions.
- Statistical analysis to determine correlations between complications, interventions, and outcomes.
Main Results:
- Noncardiac vascular complications occurred in 33% of patients, with a significantly higher mortality rate (51%) compared to those without (29%).
- Aortic rupture was the strongest predictor of mortality (90%).
- Vascular occlusion in carotid, mesenteric, and renal circulations was associated with high mortality; peripheral operations were ineffective for mesenteric and renal ischemia.
Conclusions:
- Spontaneous aortic dissection with noncardiac vascular complications portends a poor prognosis.
- Management should prioritize immediate life-threatening complications.
- Peripheral vascular operations may be necessary in selected cases of acute aortic dissection with lower extremity ischemia.
Abstract:
Three hundred twenty-five cases of spontaneous aortic dissection seen at two institutions between 1965 and 1986 were reviewed to assess the incidence, morbid sequelae, and specific management of aortic branch compromise. Noncardiac vascular complications occurred in 33% of the study group, and in these patients the overall mortality rate (51%) was significantly (p less than 0.001) higher than in patients without (29%) such complications. Although aortic rupture was the strongest correlate of mortality (90%), death specifically related to vascular occlusion was common when such occlusion occurred in the carotid, mesenteric, and renal circulation. There was a strong correlation between stroke and carotid occlusion (22/26 cases), yet specific carotid revascularization was only used during the chronic phase of the disease. Similarly, peripheral operation was ineffective in reducing the mortality rate in the setting of mesenteric (87%) and renal (50%) ischemia. Fifteen patients required either fenestration or graft replacement of the abdominal aorta for acute obstruction, rupture, or chronic aneurysm development. Thirty-eight patients (12%) demonstrated some degree of lower extremity ischemia, and one third of these required a direct approach on the abdominal aorta or iliofemoral segments to restore circulation. Selected patients with acute aortic dissection may require peripheral vascular operation in accordance with a treatment strategy that directs initial attention to the immediate life-threatening complications.