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Nuti O, Merchan C, Papadopoulos J, Horowitz J, Rao SV, Ahuja T. Evaluating the Use of Unfractionated Heparin with Intra-Aortic Balloon Counterpulsation. Heart Lung Circ 2024:S1443-9506(24)00067-2. [PMID: 38575436 DOI: 10.1016/j.hlc.2024.01.032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Revised: 12/07/2023] [Accepted: 01/28/2024] [Indexed: 04/06/2024]
Abstract
BACKGROUND Evidence supporting anticoagulation with unfractionated heparin (UFH) in patients with an intra-aortic balloon pump (IABP) to prevent limb ischaemia remains limited, while bleeding risks remain high. Monitoring heparin in this setting with anti-factor Xa (anti-Xa) is not previously described. OBJECTIVES The study objective is to describe the incidence of thromboembolic and bleeding events with the use of UFH in patients with an IABP utilising monitoring with both anti-Xa and activated partial thromboplastin time (aPTT). METHODS This is a retrospective study of adults who received an IABP and UFH for ≥24 hours. Electronic medical records were reviewed for pertinent data. The primary outcome was the incidence of limb ischaemia during IABP. Secondary outcomes included myocardial infarction, thrombus on IABP, or stroke. Exploratory outcomes included any venous thromboembolism and bleeding events. RESULTS Of 159 patients, 88% received an IABP for cardiogenic shock and median duration of IABP support was 118 hours (interquartile range, 67-196). Limb ischaemia occurred in four of 159 patients (2.5%). Strokes occurred in 3.8% of the cohort, and bleeding events occurred in 33%. Despite anticoagulation use in all patients, 11% experienced a venous thromboembolism, with most identified upon asymptomatic screening with concern for heparin-induced thrombocytopenia. We found no differences in outcomes that occurred with a hybrid anti-Xa and aPTT versus aPTT monitoring alone. CONCLUSIONS We observed a high rate of thrombotic and bleeding complications with the use of UFH in patients with an IABP. Use of anti-Xa versus aPTT for monitoring was not associated with complications. These data suggest safer anticoagulation strategies are needed in this setting.
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Affiliation(s)
- Olivia Nuti
- Department of Pharmacy, NYU Langone Hospital, Brooklyn, NY, USA. https://www.twitter.com/olivia_nuti
| | - Cristian Merchan
- Department of Pharmacy, NYU Langone Health, New York, NY, USA. https://www.twitter.com/ColombianpharmD
| | - John Papadopoulos
- Department of Pharmacy, NYU Langone Health, New York, NY, USA. https://www.twitter.com/JPCritCarePharm
| | - James Horowitz
- Department of Medicine - Cardiology at NYU Grossman School of Medicine, New York, NY, USA. https://www.twitter.com/jameshorowitmd
| | - Sunil V Rao
- Department of Medicine - Interventional Cardiology, NYU Grossman School of Medicine, New York, NY, USA. https://www.twitter.com/SVRaoMD
| | - Tania Ahuja
- Department of Pharmacy, NYU Langone Health, New York, NY, USA; Department of Medicine - Cardiology at NYU Grossman School of Medicine, New York, NY, USA.
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Jahren SE, Martinez T, Walter A, Clavica F, Heinisch PP, Buffle E, Luedi MM, Hörer J, Obrist D, Carrel T, Civet Y, Perriard Y. Novel para-aortic cardiac assistance using a pre-stretched dielectric elastomer actuator. INTERDISCIPLINARY CARDIOVASCULAR AND THORACIC SURGERY 2024; 38:ivae027. [PMID: 38419585 PMCID: PMC10955250 DOI: 10.1093/icvts/ivae027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Revised: 02/07/2024] [Accepted: 02/26/2024] [Indexed: 03/02/2024]
Abstract
OBJECTIVES We propose an evolution of a dielectric elastomer actuator-based cardiac assist device that acts as a counterpulsation system. We introduce a new pre-stretched actuator and implant the device in a graft bypass between the ascending and descending aorta to redirect all blood through the device (ascending aorta clamped). The objective was to evaluate the influence of these changes on the assistance provided to the heart. METHODS The novel para-aortic device and the new implantation technique were tested in vivo in 5 pigs. We monitored the pressure and flow in the aorta as well as the pressure-volume characteristics of the left ventricle. Different activation timings were tested to identify the optimal device actuation. RESULTS The proposed device helps reducing the end-diastolic pressure in the aorta by up to 13 ± 4.0% as well as the peak systolic pressure by up to 16 ± 3.6%. The early diastolic pressure was also increased up to 10 ± 3.5%. With different activation, we also showed that the device could increase or decrease the stroke volume. CONCLUSIONS The new setup and the novel para-aortic device presented here helped improve cardiac assistance compared to previous studies. Moreover, we revealed a new way to assist the heart by actuating the device at different starting time to modify the left ventricular stroke volume and stroke work.
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Affiliation(s)
- Silje Ekroll Jahren
- Integrated Actuators Laboratory (LAI), École polytechnique fédérale de Lausanne (EPFL), Neuchâtel, Switzerland
- ARTORG Center for Biomedical Engineering Research, University of Bern, Bern, Switzerland
| | - Thomas Martinez
- Integrated Actuators Laboratory (LAI), École polytechnique fédérale de Lausanne (EPFL), Neuchâtel, Switzerland
| | - Armando Walter
- Integrated Actuators Laboratory (LAI), École polytechnique fédérale de Lausanne (EPFL), Neuchâtel, Switzerland
| | - Francesco Clavica
- Integrated Actuators Laboratory (LAI), École polytechnique fédérale de Lausanne (EPFL), Neuchâtel, Switzerland
- ARTORG Center for Biomedical Engineering Research, University of Bern, Bern, Switzerland
| | - Paul Philipp Heinisch
- Department of Congenital and Pediatric Heart Surgery, German Heart Center Munich, Technical University of Munich, Munich, Germany
- Division of Congenital and Pediatric Heart Surgery, University Hospital of Munich, Ludwig-Maximilians-University, Munich, Germany
| | - Eric Buffle
- Department of Cardiology, Bern University Hospital Inselspital, University of Bern, Bern, Switzerland
| | - Markus Martin Luedi
- Department of Anaesthesiology, Bern University Hospital Inselspital, University of Bern, Bern, Switzerland
| | - Jürgen Hörer
- Department of Congenital and Pediatric Heart Surgery, German Heart Center Munich, Technical University of Munich, Munich, Germany
- Division of Congenital and Pediatric Heart Surgery, University Hospital of Munich, Ludwig-Maximilians-University, Munich, Germany
| | - Dominik Obrist
- ARTORG Center for Biomedical Engineering Research, University of Bern, Bern, Switzerland
| | - Thierry Carrel
- Department of Cardiac Surgery, University of Zurich, Zurich, Switzerland
| | - Yoan Civet
- Integrated Actuators Laboratory (LAI), École polytechnique fédérale de Lausanne (EPFL), Neuchâtel, Switzerland
| | - Yves Perriard
- Integrated Actuators Laboratory (LAI), École polytechnique fédérale de Lausanne (EPFL), Neuchâtel, Switzerland
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Lobdell KW, Grant MC, Salenger R. Temporary mechanical circulatory support & enhancing recovery after cardiac surgery. Curr Opin Anaesthesiol 2024; 37:16-23. [PMID: 38085881 DOI: 10.1097/aco.0000000000001332] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2023]
Abstract
PURPOSE OF REVIEW This review highlights the integration of enhanced recovery principles with temporary mechanical circulatory support associated with adult cardiac surgery. RECENT FINDINGS Enhanced recovery elements and efforts have been associated with improvements in quality and value. Temporary mechanical circulatory support technologies have been successfully employed, improved, and the value of their proactive use to maintain hemodynamic goals and preserve long-term myocardial function is accruing. SUMMARY Temporary mechanical circulatory support devices promise to enhance recovery by mitigating the risk of complications, such as postcardiotomy cardiogenic shock, organ dysfunction, and death, associated with adult cardiac surgery.
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Affiliation(s)
- Kevin W Lobdell
- Sanger Heart & Vascular Institute, Advocate Health, Charlotte, North Carolina
| | - Michael C Grant
- Johns Hopkins University School of Medicine, Anesthesiology and Critical Care Medicine, Baltimore
| | - Rawn Salenger
- University of Maryland School of Medicine, Department of Surgery, Towson, Maryland, USA
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Bae DJ, Willey JZ, Ibeh C, Yuzefpolskaya M, Colombo PC. Stroke and Mechanical Circulatory Support in Adults. Curr Cardiol Rep 2023; 25:1665-1675. [PMID: 37921947 DOI: 10.1007/s11886-023-01985-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 10/19/2023] [Indexed: 11/05/2023]
Abstract
PURPOSE OF THE REVIEW Short-term and durable mechanical circulatory support (MCS) devices represent life-saving interventions for patients with cardiogenic shock and end-stage heart failure. This review will cover the epidemiology, risk factors, and treatment of stroke in this patient population. RECENT FINDINGS Short-term devices such as intra-aortic balloon pump, Impella, TandemHeart, and Venoatrial Extracorporal Membrane Oxygenation, as well as durable continuous-flow left ventricular assist devices (LVADs), improve cardiac output and blood flow to the vital organs. However, MCS use is associated with high rates of complications, including ischemic and hemorrhagic strokes which carry a high risk for death and disability. Improvements in MCS technology have reduced but not eliminated the risk of stroke. Mitigation strategies focus on careful management of anti-thrombotic therapies. While data on therapeutic options for stroke are limited, several case series reported favorable outcomes with thrombectomy for ischemic stroke patients with large vessel occlusions, as well as with reversal of anticoagulation for those with hemorrhagic stroke. Stroke in patients treated with MCS is associated with high morbidity and mortality. Preventive strategies are targeted based on the specific form of MCS. Improvements in the design of the newest generation device have reduced the risk of ischemic stroke, though hemorrhagic stroke remains a serious complication.
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Affiliation(s)
- David J Bae
- Division of Medicine, Center for Advanced Cardiac Care, Columbia University, New York, NY, USA
| | - Joshua Z Willey
- Division of Stroke and Cerebrovascular Disease, Department of Neurology, Columbia University Irving Medical Center, New York, NY, 10032, USA.
| | - Chinwe Ibeh
- Division of Stroke and Cerebrovascular Disease, Department of Neurology, Columbia University Irving Medical Center, New York, NY, 10032, USA
| | - Melana Yuzefpolskaya
- Division of Medicine, Center for Advanced Cardiac Care, Columbia University, New York, NY, USA
| | - Paolo C Colombo
- Division of Medicine, Center for Advanced Cardiac Care, Columbia University, New York, NY, USA
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Corujo Rodriguez A, Richter E, Ibekwe SO, Shah T, Faloye AO. Postcardiotomy Shock Syndrome: A Narrative Review of Perioperative Diagnosis and Management. J Cardiothorac Vasc Anesth 2023; 37:2621-2633. [PMID: 37806929 DOI: 10.1053/j.jvca.2023.09.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Revised: 08/29/2023] [Accepted: 09/09/2023] [Indexed: 10/10/2023]
Abstract
Postcardiotomy shock (PCS) is generally described as the inability to separate from cardiopulmonary bypass due to ineffective cardiac output after cardiotomy, which is caused by a primary cardiac disorder, resulting in inadequate tissue perfusion. Postcardiotomy shock occurs in 0.5% to 1.5% of contemporary cardiac surgery cases, and is accompanied by an in-hospital mortality of approximately 67%. In the last 2 decades, the incidence of PCS has increased, likely due to the increased age and baseline morbidity of patients requiring cardiac surgery. In this narrative review, the authors discuss the epidemiology and pathophysiology of PCS, the rationale and evidence behind the initiation, continuation, escalation, and discontinuation of mechanical support devices in PCS, and the anesthetic implications.
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Affiliation(s)
| | - Ellen Richter
- Department of Anesthesiology, Emory University, Atlanta, GA
| | | | - Tina Shah
- Department of Anesthesiology, Emory University, Atlanta, GA
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Anticoagulation Strategies in Temporary Mechanical Circulatory Support. CURRENT TREATMENT OPTIONS IN CARDIOVASCULAR MEDICINE 2023. [DOI: 10.1007/s11936-023-00978-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
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