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Vascular complications of the intra-aortic balloon pump
D J Mackenzie1, W H Wagner, D A Kulber
1Division of Vascular Surgery, Cedars-Sinai Medical Center, Los Angeles, California.
Insights
Intra-aortic balloon pump (IABP) use can lead to lower extremity complications, primarily limb ischemia. Pre-procedure assessment of peripheral arterial disease and noninvasive imaging are crucial for managing these vascular complications.
Area of Science:
- Vascular Surgery
- Cardiology
- Interventional Cardiology
Background:
- Intra-aortic balloon pump (IABP) is a critical circulatory support device.
- Lower extremity complications are a known risk associated with IABP placement.
Purpose of the Study:
- To investigate the incidence and nature of lower extremity complications in patients requiring IABP.
- To identify risk factors and evaluate management strategies for IABP-related vascular complications.
Main Methods:
- Retrospective study of 100 consecutive patients who received an IABP.
- Analysis of indications for IABP, complication rates, interventions, and outcomes.
- Utilized color-flow duplex scans for diagnosis and management.
Main Results:
- Overall IABP morbidity was 29%, with limb ischemia being the most frequent complication (25%).
- Twenty patients required surgical intervention for vascular complications, with 70% having pre-existing arterial occlusive disease.
- Nonoperative management with IABP removal was successful in five patients; one patient underwent amputation.
Conclusions:
- Limb ischemia is the primary complication of IABP therapy.
- Noninvasive vascular studies pre- and post-IABP insertion are vital for risk assessment and management.
- Femoral artery repair and noninvasive imaging aid in managing IABP-related limb complications.
Abstract:
The lower extremity complications of 100 consecutive patients who required the placement of an intra-aortic balloon pump (IABP) during a 3-year period were studied. Indications for the IABP included hypotension during cardiac catheterization (33%) or coronary angioplasty (13%), hemodynamic instability after open heart surgery (35%), unstable angina (5%), and cardiac arrest (14%). The incidence of IABP morbidity was 29%. Complications included ischemia (25%), bleeding (2%), lymph fistula (1%), and femoral neuropathy (1%). Twenty patients required 1 or more surgical interventions for lower extremity vascular complications. The majority of patients who underwent operation (70%) had significant pre-existing arterial occlusive disease. Local femoral artery reconstruction or repair was performed in 18 patients. Two patients had adjunctive bypasses. Continued IABP support was required in four patients after treatment of complications. One patient (1%) had an above-knee amputation. Limb ischemia was treated nonoperatively by removal of the IABP in five patients. Color-flow duplex scans were useful in distinguishing hematomas from pseudoaneurysms as well as for assessing femoral artery flow. We conclude that: (1) limb ischemia remains the primary complication of the IABP; (2) pre-insertion documentation of the severity of existing peripheral arterial disease by noninvasive studies may aid in the management of subsequent acute limb ischemia; (3) femoral artery thrombectomy or endarterectomy is usually sufficient for revascularization; and (4) noninvasive color flow studies are an important diagnostic tool in the nonoperative management of limb complications.