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Benefits of combined balloon pumping and percutaneous cardiopulmonary bypass
S J Phillips1, R H Zeff, C Kongtahworn
1Cardiovascular Medicine and Surgery Department, Mercy Hospital Medical Center, Des Moines, Iowa.
Insights
Combined therapy using intra-aortic balloon pumping (IABP) and percutaneous cardiopulmonary bypass (PBY) significantly improved outcomes for patients with persistent cardiogenic shock. This combined approach offers a superior treatment strategy compared to using either device alone.
Area of Science:
- Cardiology
- Cardiovascular Surgery
- Critical Care Medicine
Background:
- Cardiogenic shock remains a critical condition with high mortality.
- Intra-aortic balloon pumping (IABP) is a standard mechanical circulatory support, but its efficacy can be limited in severe cases.
- Persistent cardiogenic shock during IABP necessitates advanced therapeutic strategies.
Purpose of the Study:
- To evaluate the efficacy and outcomes of adding percutaneous cardiopulmonary bypass (PBY) to ongoing IABP therapy in patients with refractory cardiogenic shock.
- To determine if combined IABP and PBY offers improved hemodynamic support and survival rates.
Main Methods:
- A cohort of 16 patients with cardiogenic shock refractory to IABP underwent additional treatment with PBY.
- Data collected included causes of shock, hemodynamic parameters (mean blood pressure, PBY flow), duration of support, and patient outcomes.
- The study analyzed survival rates and successful weaning from both devices.
Main Results:
- The combined therapy demonstrated improved mean blood pressure (75 mm Hg with PBY + IABP vs. 60 mm Hg with IABP alone).
- Percutaneous cardiopulmonary bypass provided a mean flow of 1.3 L/min.
- Overall survival was 44% (7 out of 16 patients), with 63% (10 out of 16) successfully weaned from support.
Conclusions:
- Combined intra-aortic balloon pumping and percutaneous cardiopulmonary bypass is a viable and potentially superior therapeutic option for patients with persistent cardiogenic shock.
- Sequential application, with IABP initiated first and PBY added as needed, followed by IABP removal last, appears to be an effective methodology.
Abstract:
Sixteen patients (2 women, 14 men) aged 29 to 72 years with continued cardiogenic shock during intraaortic balloon pumping (IABP) had additional treatment with percutaneous cardiopulmonary bypass (PBY). Cause of cardiogenic shock was myocardial infarction in 7 (3 survived), failed percutaneous transluminal coronary angioplasty requiring emergency coronary artery bypass grafting in 5, postoperative aortic valve replacement in 1, postoperative emergency coronary artery bypass grafting in 1, after cardiac transplantation in 1, and bridging to transplantation in 1. Mean blood pressure with PBY and IABP combined was 75 mm Hg versus 60 mm Hg with IABP off. Percutaneous cardiopulmonary bypass flows ranged from 0.8 to 2.1 L/min with a mean flow of 1.3 L/min. Time on IABP ranged from 24 hours to 1 week. Time on IABP to PBY ranged from 1 to 20 hours, and time on PBY ranged from 65 minutes to 20 hours. Ten of 16 (63%) were successfully weaned, and 3 died after weaning. Seven of 16 (44%) survive. Combined IABP with PBY appears to be a better therapy than either one individually. Staging the therapy as the balloon first in and last out appears to be a good methodology.