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Kwon SB, Weinerman B, Nametz D, Megjhani M, Lee I, Habib A, Barry O, Park S. Non-invasive pulse arrival time is associated with cardiac index in pediatric heart transplant patients with normal ejection fraction. Physiol Meas 2024; 45:07NT01. [PMID: 38986482 PMCID: PMC11262133 DOI: 10.1088/1361-6579/ad61b9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2024] [Revised: 06/05/2024] [Accepted: 07/10/2024] [Indexed: 07/12/2024]
Abstract
Objective.Cardiac Index (CI) is a key physiologic parameter to ensure end organ perfusion in the pediatric intensive care unit (PICU). Determination of CI requires invasive cardiac measurements and is not routinely done at the PICU bedside. To date, there is no gold standard non-invasive means to determine CI. This study aims to use a novel non-invasive methodology, based on routine continuous physiologic data, called Pulse Arrival Time (PAT) as a surrogate for CI in patients with normal Ejection Fraction (EF).Approach.Electrocardiogram (ECG) and photoplethysmogram (PPG) signals were collected from beside monitors at a sampling frequency of 250 samples per second. Continuous PAT, derived from the ECG and PPG waveforms was averaged per patient. Pearson's correlation coefficient was calculated between PAT and CI, PAT and heart rate (HR), and PAT and EF.Main Results.Twenty patients underwent right heart cardiac catheterization. The mean age of patients was 11.7 ± 5.4 years old, ranging from 11 months old to 19 years old, the median age was 13.4 years old. HR in this cohort was 93.8 ± 17.0 beats per minute. The average EF was 54.4 ± 9.6%. The average CI was 3.51 ± 0.72 l min-1m-2, with ranging from 2.6 to 4.77 l min-1m-2. The average PAT was 0.31 ± 0.12 s. Pearson correlation analysis showed a positive correlation between PAT and CI (0.57,p< 0.01). Pearson correlation between HR and CI, and correlation between EF and CI was 0.22 (p= 0.35) and 0.03 (p= 0.23) respectively. The correlation between PAT, when indexed by HR (i.e. PAT × HR), and CI minimally improved to 0.58 (p< 0.01).Significance.This pilot study demonstrates that PAT may serve as a valuable surrogate marker for CI at the bedside, as a non-invasive and continuous modality in the PICU. The use of PAT in clinical practice remains to be thoroughly investigated.
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Affiliation(s)
- Soon Bin Kwon
- Department of Neurology, Columbia University Vagelos College of Physicians and Surgeons, New York, NY, United States of America
- Program in Hospital and Intensive Care Informatics, Department of Neurology, Columbia University Vagelos College of Physicians and Surgeons, New York, NY, United States of America
| | - Bennett Weinerman
- Program in Hospital and Intensive Care Informatics, Department of Neurology, Columbia University Vagelos College of Physicians and Surgeons, New York, NY, United States of America
- Columbia University College of Physicians and Surgeons, Division of Pediatric Critical Care and Hospital Medicine, New York, NY, United States of America
| | - Daniel Nametz
- Department of Neurology, Columbia University Vagelos College of Physicians and Surgeons, New York, NY, United States of America
- Program in Hospital and Intensive Care Informatics, Department of Neurology, Columbia University Vagelos College of Physicians and Surgeons, New York, NY, United States of America
| | - Murad Megjhani
- Department of Neurology, Columbia University Vagelos College of Physicians and Surgeons, New York, NY, United States of America
- Program in Hospital and Intensive Care Informatics, Department of Neurology, Columbia University Vagelos College of Physicians and Surgeons, New York, NY, United States of America
| | - Isaac Lee
- Department of Neurology, Columbia University Vagelos College of Physicians and Surgeons, New York, NY, United States of America
- Program in Hospital and Intensive Care Informatics, Department of Neurology, Columbia University Vagelos College of Physicians and Surgeons, New York, NY, United States of America
| | - Anthony Habib
- Columbia University College of Physicians and Surgeons, Division of Pediatric Anesthesiology, New York, NY, United States of America
| | - Oliver Barry
- Columbia University College of Physicians and Surgeons, Division of Pediatric Cardiology, New York, NY, United States of America
| | - Soojin Park
- Department of Neurology, Columbia University Vagelos College of Physicians and Surgeons, New York, NY, United States of America
- Program in Hospital and Intensive Care Informatics, Department of Neurology, Columbia University Vagelos College of Physicians and Surgeons, New York, NY, United States of America
- NewYork-Presbyterian Hospital, Columbia University Irving Medical Center, New York, NY, United States of America
- Department of Biomedical Informatics, Columbia University, New York, NY, United States of America
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Grant MC, Salenger R, Lobdell KW. Perioperative hemodynamic monitoring in cardiac surgery. Curr Opin Anaesthesiol 2024; 37:1-9. [PMID: 38085877 DOI: 10.1097/aco.0000000000001327] [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 Cardiac surgery has traditionally relied upon invasive hemodynamic monitoring, including regular use of pulmonary artery catheters. More recently, there has been advancement in our understanding as well as broader adoption of less invasive alternatives. This review serves as an outline of the key perioperative hemodynamic monitoring options for cardiac surgery. RECENT FINDINGS Recent study has revealed that the use of invasive monitoring such as pulmonary artery catheters or transesophageal echocardiography in low-risk patients undergoing low-risk cardiac surgery is of questionable benefit. Lesser invasive approaches such a pulse contour analysis or ultrasound may provide a useful alternative to assess patient hemodynamics and guide resuscitation therapy. A number of recent studies have been published to support broader indication for these evolving technologies. SUMMARY More selective use of indwelling catheters for cardiac surgery has coincided with greater application of less invasive alternatives. Understanding the advantages and limitations of each tool allows the bedside clinician to identify which hemodynamic monitoring modality is most suitable for which patient.
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Affiliation(s)
- Michael C Grant
- Department of Anesthesiology and Critical Care Medicine, The Johns Hopkins University School of Medicine
| | - Rawn Salenger
- Department of Surgery, University of Maryland School of Medicine, Baltimore, Maryland
| | - Kevin W Lobdell
- Sanger Heart & Vascular Institute, Advocate Health, Charlotte, North Carolina, USA
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Ochiai R, Terada T, Sakamoto N. Comparative evaluation of stroke volume variation measured by pulse wave transit time and arterial pressure wave. Technol Health Care 2024; 32:651-662. [PMID: 37483029 PMCID: PMC10977375 DOI: 10.3233/thc-220849] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2022] [Accepted: 05/15/2023] [Indexed: 07/25/2023]
Abstract
BACKGROUND Several monitors have been developed that measure stroke volume (SV) in a beat-to-beat manner. Accordingly, Stroke volume variation (SVV) induced by positive pressure ventilation is widely used to predict fluid responsiveness. OBJECTIVE The purpose of this study was to compare the ability of two different methods to predict fluid responsiveness using SVV, stroke volume variation by esCCO (esSVV) and stroke volume variation by FloTrac/VigileoTM (flSVV). METHODS esSVV, flSVV, and stroke volume index (SVI) by both monitoring devices of 37 adult patients who underwent laparotomy surgery, were measured. Receiver operating characteristic (ROC) analysis was performed. RESULTS The area under the ROC curve (AUC) of esSVV was significantly higher than that of flSVV (p= 0.030). esSVV and flSVV showed cutoff values of 6.1% and 10% respectively, to predict an increase of more than 10% in SVI after fluid challenge. The Youden index for esSVV was higher than flSVV, even with a cutoff value between 6% and 8%. CONCLUSION Since esSVV and flSVV showed significant differences in AUC and cutoff values, the two systems were not comparable in predicting fluid responsiveness. Furthermore, it seems that SVV needs to be personalized to accurately predict fluid responsiveness for each patient.
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Affiliation(s)
| | - Takashi Terada
- Department of Anesthesiology, Japan Community Health Care Organization Mishima General Hospital, Fujikubo, Mishima, Japan
| | - Noriaki Sakamoto
- Department of Anesthesiology, Toho University Omori Medical Centre, Oota, Japan
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