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Zhang M, Zhai Y. A DETECTION SYSTEM OF EXERCISE ELECTROCARDIOGRAM. REV BRAS MED ESPORTE 2021. [DOI: 10.1590/1517-8692202127042021_0122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
ABSTRACT Introduction: A new exercise electrocardiogram (ECG) detection system was investigated in this study to diagnose and analyze cardiopulmonary function and related diseases in a comprehensive and timely manner and improve the accuracy of diagnosis. Besides, its reliability and clinical applicability were judged. Objective: A new type of exercise ECG detection system was constructed by adding parameters such as respiratory mechanics, carbon dioxide, and oxygen concentration monitoring based on the traditional ECG detection system. Methods: The new system constructed in this study carried out the ECG signal detection, ECG acquisition module, blood pressure and respiratory mechanics detection and conducted a standard conformance test. Results: The heart rate accuracy detected by the exercise ECG system was greatly higher than that of the doctor's manual detection (P < 0.05). The accuracy of the new exercise ECG detection system increased obviously in contrast to that of the manual detection result (P < 0.05). The key technical index input noise and input impedance test results (24.5 μV and 12.4 MΩ) of the exercise ECG detection system conformed to the standard (< 30 μV and > 2.5 MΩ). The common-mode rejection and sampling rate test results (103.5 dB and 515 Hz) of key technical indicators in the exercise ECG detection system were all in line with the standards (≥89 dB and ≥500 Hz). Conclusion: The complete exercise ECG detection system was constructed through the ECG acquisition module, blood pressure detection, and respiratory mechanics detection module. In addition, this system could be applied to detect ECG monitoring indicators with high accuracy and reliability, which could also be extensively adopted in clinical diagnosis. Level of evidence II; Therapeutic studies - investigation of treatment results.
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Gupta K, Kakar TS, Gupta A, Singh A, Gharpure N, Aryal S, Hawi R, Lloyd SG, Booker J, Hage FG, Prabhu SD, Nanda NC, Bajaj NS. Role of left ventricle deformation analysis in stress echocardiography for significant coronary artery disease detection: A diagnostic study meta-analysis. Echocardiography 2019; 36:1084-1094. [PMID: 31116467 DOI: 10.1111/echo.14365] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2019] [Revised: 03/27/2019] [Accepted: 04/24/2019] [Indexed: 12/29/2022] Open
Abstract
BACKGROUND We compared the diagnostic accuracy of longitudinal strain (LS) imaging during stress echocardiography with visual assessment of wall motion (WM) for detecting significant coronary artery disease (CAD). METHODS Our systematic search included studies reporting diagnostic measures for LS imaging and visual assessment of WM for detecting significant CAD during stress echocardiography. Summary diagnostic accuracy measures including area under the curve (AUC), sensitivity, specificity, diagnostic odds ratio (DOR), and likelihood ratios (LRs) were estimated. RESULTS In thirteen studies with 978 patients, ten studies used invasive coronary angiography as the reference standard. Pooled AUC for diagnosing significant CAD was 0.92 (95% confidence interval [CI] 0.89-0.94) for LS imaging as compared to 0.83 (95% CI 0.80-0.86), P < 0.001 for visual assessment of WM. LS imaging had higher sensitivity (88% [95% CI 84-92] vs 74% [95% CI 68-80], P < 0.001) and comparable specificity to visual assessment of WM (80% [95% CI 72-87] vs 83% [95% CI 74-90], P = 0.592). The DOR for LS imaging and visual assessment of WM was 31 and 15, P = 0.254, respectively. The positive LR was 4.5 for both; negative LR was 0.14 and 0.31, P = 0.002 for LS imaging and visual assessment of WM, respectively. CONCLUSIONS Longitudinal strain imaging during stress echocardiography has better diagnostic accuracy for detecting significant CAD as compared to visual assessment of WM. Studies using larger sample size and standardized techniques of strain measurement are required to further ascertain the added advantage of strain measurement over visual assessment alone.
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Affiliation(s)
- Kartik Gupta
- Division of Cardiovascular Disease, University of Alabama at Birmingham, Birmingham, Alabama
| | - Tanya S Kakar
- Department of Internal Medicine, William Beaumont Hospital, Royal Oak, Michigan
| | - Ankur Gupta
- Division of Cardiology, Department of Medicine, University of Texas Southwestern, Dallas, Texas
| | - Amitoj Singh
- Department of Noninvasive Cardiac Imaging, Brigham and Women's Hospital, Boston, Massachusetts
| | - Nitin Gharpure
- Division of Cardiovascular Disease, University of Alabama at Birmingham, Birmingham, Alabama
| | - Sudeep Aryal
- Division of Cardiovascular Disease, University of Alabama at Birmingham, Birmingham, Alabama
| | - Riem Hawi
- Division of Cardiovascular Disease, University of Alabama at Birmingham, Birmingham, Alabama.,Section of Cardiology, Birmingham Veterans Affair Medical Center, Birmingham, Alabama
| | - Steven G Lloyd
- Division of Cardiovascular Disease, University of Alabama at Birmingham, Birmingham, Alabama.,Section of Cardiology, Birmingham Veterans Affair Medical Center, Birmingham, Alabama
| | - Julian Booker
- Division of Cardiovascular Disease, University of Alabama at Birmingham, Birmingham, Alabama
| | - Fadi G Hage
- Division of Cardiovascular Disease, University of Alabama at Birmingham, Birmingham, Alabama.,Section of Cardiology, Birmingham Veterans Affair Medical Center, Birmingham, Alabama
| | - Sumanth D Prabhu
- Division of Cardiovascular Disease, University of Alabama at Birmingham, Birmingham, Alabama.,Section of Cardiology, Birmingham Veterans Affair Medical Center, Birmingham, Alabama
| | - Navin C Nanda
- Division of Cardiovascular Disease, University of Alabama at Birmingham, Birmingham, Alabama
| | - Navkaranbir S Bajaj
- Division of Cardiovascular Disease, University of Alabama at Birmingham, Birmingham, Alabama.,Section of Cardiology, Birmingham Veterans Affair Medical Center, Birmingham, Alabama.,Division of Molecular Imaging and Therapeutics, Department of Radiology, University of Alabama at Birmingham, Birmingham, Alabama
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