|
1
|
Pearman M, Emmanuel S, Jansz P, Watson A, Connellan M, Iyer A, Barua S, Hayward CS. Comparing left ventricular assist device inflow cannula angle between median sternotomy and thoracotomy using 3D reconstructions. Artif Organs 2022. [PMID: 36582131 DOI: 10.1111/aor.14492] [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: 08/28/2022] [Revised: 12/06/2022] [Accepted: 12/16/2022] [Indexed: 12/31/2022]
Abstract
BACKGROUND Left ventricular assist device (LVAD) implantation via thoracotomy has many potential advantages compared to conventional sternotomy, including improved inflow cannula (IFC) positioning. We compared the difference in IFC angles, postoperative, and long-term outcomes for patients with LVADs implanted via thoracotomy and sternotomy. METHODS A single-center, retrospective analysis of 14 patients who underwent thoracotomy implantation was performed and matched with 28 patients who underwent sternotomy LVAD implantations for a total of 42 patients. Inclusion required a minimum LVAD support duration of 30 days and excluded concomitant procedures. A postoperative CT-chest was used to measure the angle the between the IFC and mitral valve in two-dimensions and results were compared with three-dimensional reconstruction using the same CT chest. Outcome data were extracted from medical records. RESULTS There was no significant difference in gender, INTERMACS score, BMI, or age between the two groups. Median cardiopulmonary bypass time was longer in the thoracotomy group compared to the sternotomy group, 107 min (86-122) versus 76 min (56-93), p < 0.01. 3D reconstructions revealed less deviation of the IFC away from the mitral valve in devices implanted via thoracotomy compared to sternotomy, median (IQR) angle 16.3° (13.9°-21.0°) versus 23.2° (17.9°-26.4°), p < 0.01. Rates of pump thrombosis, stroke, and gastrointestinal bleeding were not significantly different. CONCLUSIONS Devices implanted via thoracotomy demonstrated less deviation away from mitral valve. However, there was no difference in morbidity between the two approaches. 3D reconstruction of the heart is an innovative technique to measure angulation and is clinically advantageous when compared to 2D imaging.
Collapse
Affiliation(s)
- Madeleine Pearman
- St Vincent's Hospital, Sydney, Darlinghurst, New South Wales, Australia.,School of Medicine, University of Notre Dame, Sydney, Chippendale, New South Wales, Australia
| | - Sam Emmanuel
- St Vincent's Hospital, Sydney, Darlinghurst, New South Wales, Australia.,School of Medicine, University of Notre Dame, Sydney, Chippendale, New South Wales, Australia.,School of Medicine, University of New South Wales, Sydney, Kensington, New South Wales, Australia.,Victor Chang Cardiac Research Institute, Sydney, New South Wales, Australia
| | - Paul Jansz
- St Vincent's Hospital, Sydney, Darlinghurst, New South Wales, Australia.,School of Medicine, University of Notre Dame, Sydney, Chippendale, New South Wales, Australia.,School of Medicine, University of New South Wales, Sydney, Kensington, New South Wales, Australia.,Victor Chang Cardiac Research Institute, Sydney, New South Wales, Australia
| | - Alasdair Watson
- St Vincent's Hospital, Sydney, Darlinghurst, New South Wales, Australia
| | - Mark Connellan
- St Vincent's Hospital, Sydney, Darlinghurst, New South Wales, Australia
| | - Arjun Iyer
- St Vincent's Hospital, Sydney, Darlinghurst, New South Wales, Australia
| | - Sumita Barua
- St Vincent's Hospital, Sydney, Darlinghurst, New South Wales, Australia.,School of Medicine, University of New South Wales, Sydney, Kensington, New South Wales, Australia.,Victor Chang Cardiac Research Institute, Sydney, New South Wales, Australia
| | - Christopher Simon Hayward
- St Vincent's Hospital, Sydney, Darlinghurst, New South Wales, Australia.,School of Medicine, University of New South Wales, Sydney, Kensington, New South Wales, Australia.,Victor Chang Cardiac Research Institute, Sydney, New South Wales, Australia
| |
Collapse
|
|
2
|
Zijderhand CF, Knol WG, Budde RPJ, van der Heiden CW, Veen KM, Sjatskig J, Manintveld OC, Constantinescu AA, Birim O, Bekkers JA, Bogers AJJC, Caliskan K. Relapsing low-flow alarms due to suboptimal alignment of the left ventricular assist device inflow cannula. Eur J Cardiothorac Surg 2022; 62:ezac415. [PMID: 35993906 PMCID: PMC9789739 DOI: 10.1093/ejcts/ezac415] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Revised: 07/29/2022] [Indexed: 11/14/2022] Open
Abstract
OBJECTIVES This retrospective study investigated the correlation between the angular position of the left ventricular assist device (LVAD) inflow cannula and relapsing low-flow alarms. METHODS Medical charts were reviewed of all patients with HeartMate 3 LVAD support for relapsing low-flow alarms. A standardized protocol was created to measure the angular position with a contrast-enhanced computed tomography scan. Statistics were done using a gamma frailty model with a constant rate function. RESULTS For this analysis, 48 LVAD-supported patients were included. The majority of the patients were male (79%) with a median age of 57 years and a median follow-up of 30 months (interquartile range: 19-41). Low-flow alarm(s) were experienced in 30 (63%) patients. Angulation towards the septal-lateral plane showed a significant increase in low-flow alarms over time with a constant rate function of 0.031 increase in low-flow alarms per month of follow-up per increasing degree of angulation (P = 0.048). When dividing this group using an optimal cut-off point, a significant increase in low-flow alarms was observed when the septal-lateral angulation was 28° or more (P = 0.001). Anterior-posterior and maximal inflow cannula angulation did not show a significant difference. CONCLUSIONS This study showed an increasing number of low-flow alarms when the degrees of LVAD inflow cannula expand towards the septal-lateral plane. This emphasizes the importance of the LVAD inflow cannula angular position to prevent relapsing low-flow alarms with the risk of diminished quality of life and morbidity.
Collapse
Affiliation(s)
- Casper F Zijderhand
- Department of Cardiothoracic Surgery, Thoraxcenter, Erasmus MC, University Medical Center Rotterdam, Rotterdam, Netherlands
- Department of Cardiology, Thoraxcenter, Erasmus MC, University Medical Center Rotterdam, Rotterdam, Netherlands
| | - Wiebe G Knol
- Department of Cardiothoracic Surgery, Thoraxcenter, Erasmus MC, University Medical Center Rotterdam, Rotterdam, Netherlands
- Department of Radiology and Nuclear Medicine, Erasmus MC, University Medical Center Rotterdam, Rotterdam, Netherlands
| | - Ricardo P J Budde
- Department of Radiology and Nuclear Medicine, Erasmus MC, University Medical Center Rotterdam, Rotterdam, Netherlands
| | - Cornelis W van der Heiden
- Department of Cardiology, Thoraxcenter, Erasmus MC, University Medical Center Rotterdam, Rotterdam, Netherlands
| | - Kevin M Veen
- Department of Cardiothoracic Surgery, Thoraxcenter, Erasmus MC, University Medical Center Rotterdam, Rotterdam, Netherlands
| | - Jelena Sjatskig
- Department of Cardiothoracic Surgery, Thoraxcenter, Erasmus MC, University Medical Center Rotterdam, Rotterdam, Netherlands
| | - Olivier C Manintveld
- Department of Cardiology, Thoraxcenter, Erasmus MC, University Medical Center Rotterdam, Rotterdam, Netherlands
| | - Alina A Constantinescu
- Department of Cardiology, Thoraxcenter, Erasmus MC, University Medical Center Rotterdam, Rotterdam, Netherlands
| | - Ozcan Birim
- Department of Cardiothoracic Surgery, Thoraxcenter, Erasmus MC, University Medical Center Rotterdam, Rotterdam, Netherlands
| | - Jos A Bekkers
- Department of Cardiothoracic Surgery, Thoraxcenter, Erasmus MC, University Medical Center Rotterdam, Rotterdam, Netherlands
| | - Ad J J C Bogers
- Department of Cardiothoracic Surgery, Thoraxcenter, Erasmus MC, University Medical Center Rotterdam, Rotterdam, Netherlands
| | - Kadir Caliskan
- Department of Cardiology, Thoraxcenter, Erasmus MC, University Medical Center Rotterdam, Rotterdam, Netherlands
| |
Collapse
|
|
3
|
Implication of Hemodynamic Assessment during Durable Left Ventricular Assist Device Support. MEDICINA-LITHUANIA 2020; 56:medicina56080413. [PMID: 32824131 PMCID: PMC7466331 DOI: 10.3390/medicina56080413] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/18/2020] [Revised: 08/12/2020] [Accepted: 08/13/2020] [Indexed: 11/16/2022]
Abstract
Durable left ventricular assist device therapy has improved survival in patients with advanced heart failure refractory to conventional medical therapy, although the readmission rates due to device-related comorbidities remain high. Left ventricular assist devices are designed to support a failing left ventricle through relief of congestion and improvement of cardiac output. However, many patients still have abnormal hemodynamics even though they may appear to be clinically stable. Furthermore, such abnormal hemodynamics are associated with an increased risk of future adverse events including recurrent heart failure, gastrointestinal bleeding, stroke, and pump thrombosis. Correction of residual hemodynamic derangements post-implantation may be a target in improving longitudinal clinical outcomes during left ventricular assist device support. Automatic and timely device speed adjustments considering a patients' hemodynamic status (i.e., with a smart pump) are potential improvements in forthcoming devices.
Collapse
|