Volunteer Study of Contractile and Diastolic Function in the Horizontal and Head-Down Positions Using Transthoracic Echocardiography
Background: The head-down position used in laparoscopic surgery considerably influences cardiac function. However, few studies have examined systolic and diastolic functions, such as the ejection fraction (EF), mitral annular plane systolic excursion (MAPSE), tricuspid annular plane systolic excursi...
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Society of Tokyo Women's Medical University
2024-02-01
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| Series: | Tokyo Women's Medical University Journal |
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| Online Access: | https://www.jstage.jst.go.jp/article/twmuj/8/0/8_2023011/_pdf/-char/en |
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| author | Yoko Mukouyama Mitsuharu Kodaka Makiko Komori |
| author_facet | Yoko Mukouyama Mitsuharu Kodaka Makiko Komori |
| author_sort | Yoko Mukouyama |
| collection | DOAJ |
| description | Background: The head-down position used in laparoscopic surgery considerably influences cardiac function. However, few studies have examined systolic and diastolic functions, such as the ejection fraction (EF), mitral annular plane systolic excursion (MAPSE), tricuspid annular plane systolic excursion (TAPSE), and early diastole/atrial kick ratio, in the head-down position. Methods: This study was registered at the University Hospital Medical Information Network (UMIN; Registration No.: 46067; Date: November 13, 2021). We used transthoracic echocardiography to examine the systolic and diastolic functions of the left and right ventricles after maintaining first horizontally and next head-down positions (30°) for 5 min in 31 adult volunteers. Results: Mean blood pressure increased by 6.4%, while left ventricular EF decreased from 70% to 63%. Similarly, MAPSE, which is strongly correlated with left ventricular EF, decreased by 11.3%. TAPSE, which correlated with right ventricular EF, increased by 8.7%. No change was observed in the early diastole/atrial kick ratio or E/E´, which reflects left ventricular diastolic function. Conclusions: In the head-down position, the EF, percentage fractional shortening, and MAPSE, which reflect contractility, decreased, whereas TAPSE increased. No significant differences were found in the measurement items reflecting diastolic capacity. |
| format | Article |
| id | doaj-art-1e71d13eec214eea93d96ca1a2ec4cd3 |
| institution | Kabale University |
| issn | 2432-6186 |
| language | English |
| publishDate | 2024-02-01 |
| publisher | Society of Tokyo Women's Medical University |
| record_format | Article |
| series | Tokyo Women's Medical University Journal |
| spelling | doaj-art-1e71d13eec214eea93d96ca1a2ec4cd32024-12-25T02:28:56ZengSociety of Tokyo Women's Medical UniversityTokyo Women's Medical University Journal2432-61862024-02-0180101610.24488/twmuj.2023011twmujVolunteer Study of Contractile and Diastolic Function in the Horizontal and Head-Down Positions Using Transthoracic EchocardiographyYoko Mukouyama0Mitsuharu Kodaka1Makiko Komori2Department of Anesthesiology, Tokyo Women's Medical University Adachi Medical CenterDepartment of Anesthesiology, Tokyo Women's Medical University Adachi Medical CenterDepartment of Anesthesiology, Tokyo Women's Medical University Adachi Medical CenterBackground: The head-down position used in laparoscopic surgery considerably influences cardiac function. However, few studies have examined systolic and diastolic functions, such as the ejection fraction (EF), mitral annular plane systolic excursion (MAPSE), tricuspid annular plane systolic excursion (TAPSE), and early diastole/atrial kick ratio, in the head-down position. Methods: This study was registered at the University Hospital Medical Information Network (UMIN; Registration No.: 46067; Date: November 13, 2021). We used transthoracic echocardiography to examine the systolic and diastolic functions of the left and right ventricles after maintaining first horizontally and next head-down positions (30°) for 5 min in 31 adult volunteers. Results: Mean blood pressure increased by 6.4%, while left ventricular EF decreased from 70% to 63%. Similarly, MAPSE, which is strongly correlated with left ventricular EF, decreased by 11.3%. TAPSE, which correlated with right ventricular EF, increased by 8.7%. No change was observed in the early diastole/atrial kick ratio or E/E´, which reflects left ventricular diastolic function. Conclusions: In the head-down position, the EF, percentage fractional shortening, and MAPSE, which reflect contractility, decreased, whereas TAPSE increased. No significant differences were found in the measurement items reflecting diastolic capacity.https://www.jstage.jst.go.jp/article/twmuj/8/0/8_2023011/_pdf/-char/enejection fractionhead-down positionmitral annular plane systolic excursiontricuspid annular plane systolic excursion |
| spellingShingle | Yoko Mukouyama Mitsuharu Kodaka Makiko Komori Volunteer Study of Contractile and Diastolic Function in the Horizontal and Head-Down Positions Using Transthoracic Echocardiography Tokyo Women's Medical University Journal ejection fraction head-down position mitral annular plane systolic excursion tricuspid annular plane systolic excursion |
| title | Volunteer Study of Contractile and Diastolic Function in the Horizontal and Head-Down Positions Using Transthoracic Echocardiography |
| title_full | Volunteer Study of Contractile and Diastolic Function in the Horizontal and Head-Down Positions Using Transthoracic Echocardiography |
| title_fullStr | Volunteer Study of Contractile and Diastolic Function in the Horizontal and Head-Down Positions Using Transthoracic Echocardiography |
| title_full_unstemmed | Volunteer Study of Contractile and Diastolic Function in the Horizontal and Head-Down Positions Using Transthoracic Echocardiography |
| title_short | Volunteer Study of Contractile and Diastolic Function in the Horizontal and Head-Down Positions Using Transthoracic Echocardiography |
| title_sort | volunteer study of contractile and diastolic function in the horizontal and head down positions using transthoracic echocardiography |
| topic | ejection fraction head-down position mitral annular plane systolic excursion tricuspid annular plane systolic excursion |
| url | https://www.jstage.jst.go.jp/article/twmuj/8/0/8_2023011/_pdf/-char/en |
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