A novel system for continuous, real-time monitoring of heart motion signals
Abstract Background Understanding cardiac mechanics is important for developing cardiac therapies. Current modalities for assessing cardiac mechanics sample patient’s heart at specific heart rate, contractility, preload, and afterload. The objective of this study was to test the feasibility of a nov...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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BMC
2017-03-01
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| Series: | European Journal of Medical Research |
| Subjects: | |
| Online Access: | http://link.springer.com/article/10.1186/s40001-017-0252-2 |
| _version_ | 1819228557399818240 |
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| author | Guy Dori Jorge E. Schliamser Oscar Lichtenstein Ilia Anshelevich Moshe Y. Flugelman |
| author_facet | Guy Dori Jorge E. Schliamser Oscar Lichtenstein Ilia Anshelevich Moshe Y. Flugelman |
| author_sort | Guy Dori |
| collection | DOAJ |
| description | Abstract Background Understanding cardiac mechanics is important for developing cardiac therapies. Current modalities for assessing cardiac mechanics sample patient’s heart at specific heart rate, contractility, preload, and afterload. The objective of this study was to test the feasibility of a novel system composed of intra-cardiac leads equipped with an inertial module chip (3D accelerometers and 3D gyroscopes) in monitoring continuous heart motion. Methods In this descriptive study, four healthy pigs were anesthetized and instrumented with motion-sensitive intra-cardiac leads; the temporal correlation between signals from motion sensors and tissue Doppler from the chest wall were studied; changes in real-time heart accelerations (ACC) and angular velocity (ANGV) were reported as percentages of change from baseline. Results Heart motion signals were sensed continuously from the right ventricular apex (RVa) and coronary sinus (CS). Volume expansion did not produce significant changes in the ACC and ANGV signals. Increasing heart rate increased the peak systolic ACC signal recorded from RVa and CS by 94 and 76%, respectively, and increased both peak systolic (61% RVa and 27% CS) and diastolic ANGV (200% CS vs. 31% RVa). Epinephrine administration increased peak systolic ACC signals at both sites (246% RVa; 331% CS). Peak systolic and diastolic ANGV increased in response to epinephrine (systolic: 198% RVa and 175% CS; diastolic: 723% CS and 89% RVa) (p = 0.125 for all changes expressed in percent). Temporal correlation between the ANGV signal and tissue Doppler signal was detected throughout all interventions. Conclusions A novel system for continuously monitoring heart motion signals from within the heart was presented. Heart motion signals in response to physiologic manipulations were characterized. |
| first_indexed | 2024-12-23T10:59:10Z |
| format | Article |
| id | doaj.art-d5e11710d011445caa7fc87dd5279d1d |
| institution | Directory Open Access Journal |
| issn | 2047-783X |
| language | English |
| last_indexed | 2024-12-23T10:59:10Z |
| publishDate | 2017-03-01 |
| publisher | BMC |
| record_format | Article |
| series | European Journal of Medical Research |
| spelling | doaj.art-d5e11710d011445caa7fc87dd5279d1d2022-12-21T17:49:42ZengBMCEuropean Journal of Medical Research2047-783X2017-03-0122111010.1186/s40001-017-0252-2A novel system for continuous, real-time monitoring of heart motion signalsGuy Dori0Jorge E. Schliamser1Oscar Lichtenstein2Ilia Anshelevich3Moshe Y. Flugelman4Department of Internal Medicine E, HaEmek Medical CenterDepartment of Cardiovascular Medicine, Lady Davis Carmel Medical CenterFaculty of Biomedical Engineering, Technion-Israel Institute of TechnologyDHS Medical Ltd.Faculty of Medicine, Technion-Israel Institute of TechnologyAbstract Background Understanding cardiac mechanics is important for developing cardiac therapies. Current modalities for assessing cardiac mechanics sample patient’s heart at specific heart rate, contractility, preload, and afterload. The objective of this study was to test the feasibility of a novel system composed of intra-cardiac leads equipped with an inertial module chip (3D accelerometers and 3D gyroscopes) in monitoring continuous heart motion. Methods In this descriptive study, four healthy pigs were anesthetized and instrumented with motion-sensitive intra-cardiac leads; the temporal correlation between signals from motion sensors and tissue Doppler from the chest wall were studied; changes in real-time heart accelerations (ACC) and angular velocity (ANGV) were reported as percentages of change from baseline. Results Heart motion signals were sensed continuously from the right ventricular apex (RVa) and coronary sinus (CS). Volume expansion did not produce significant changes in the ACC and ANGV signals. Increasing heart rate increased the peak systolic ACC signal recorded from RVa and CS by 94 and 76%, respectively, and increased both peak systolic (61% RVa and 27% CS) and diastolic ANGV (200% CS vs. 31% RVa). Epinephrine administration increased peak systolic ACC signals at both sites (246% RVa; 331% CS). Peak systolic and diastolic ANGV increased in response to epinephrine (systolic: 198% RVa and 175% CS; diastolic: 723% CS and 89% RVa) (p = 0.125 for all changes expressed in percent). Temporal correlation between the ANGV signal and tissue Doppler signal was detected throughout all interventions. Conclusions A novel system for continuously monitoring heart motion signals from within the heart was presented. Heart motion signals in response to physiologic manipulations were characterized.http://link.springer.com/article/10.1186/s40001-017-0252-2Cardiac motionCardiac twistCardiac rotationResynchronization therapy |
| spellingShingle | Guy Dori Jorge E. Schliamser Oscar Lichtenstein Ilia Anshelevich Moshe Y. Flugelman A novel system for continuous, real-time monitoring of heart motion signals European Journal of Medical Research Cardiac motion Cardiac twist Cardiac rotation Resynchronization therapy |
| title | A novel system for continuous, real-time monitoring of heart motion signals |
| title_full | A novel system for continuous, real-time monitoring of heart motion signals |
| title_fullStr | A novel system for continuous, real-time monitoring of heart motion signals |
| title_full_unstemmed | A novel system for continuous, real-time monitoring of heart motion signals |
| title_short | A novel system for continuous, real-time monitoring of heart motion signals |
| title_sort | novel system for continuous real time monitoring of heart motion signals |
| topic | Cardiac motion Cardiac twist Cardiac rotation Resynchronization therapy |
| url | http://link.springer.com/article/10.1186/s40001-017-0252-2 |
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