Acute Changes in Myocardial Work during Isometric Exercise in Hypertensive Patients with Ischemic Heart Disease. A Case-Control Study

Giuseppe Caminiti; Maurizio Volterrani; Ferdinando Iellamo; Giuseppe Marazzi; Valentino D'Antoni; Camilla Calandri; Sara Vadala; Matteo Catena; Deborah Di Biasio; Vincenzo Manzi; Valentina Morsella; Marco Alfonso Perrone

doi:10.20944/preprints202409.1092.v1

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preprints.org > medicine and pharmacology > cardiac and cardiovascular systems > doi: 10.20944/preprints202409.1092.v1

Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Acute Changes in Myocardial Work during Isometric Exercise in Hypertensive Patients with Ischemic Heart Disease. A Case-Control Study

^* ,

Marco Alfonso Perrone

Version 1 : Received: 13 September 2024 / Approved: 13 September 2024 / Online: 13 September 2024 (14:50:42 CEST)

How to cite: Caminiti, G.; Volterrani, M.; Iellamo, F.; Marazzi, G.; D'Antoni, V.; Calandri, C.; Vadala, S.; Catena, M.; Di Biasio, D.; Manzi, V.; Morsella, V.; Perrone, M. A. Acute Changes in Myocardial Work during Isometric Exercise in Hypertensive Patients with Ischemic Heart Disease. A Case-Control Study. Preprints 2024, 2024091092. https://doi.org/10.20944/preprints202409.1092.v1 Caminiti, G.; Volterrani, M.; Iellamo, F.; Marazzi, G.; D'Antoni, V.; Calandri, C.; Vadala, S.; Catena, M.; Di Biasio, D.; Manzi, V.; Morsella, V.; Perrone, M. A. Acute Changes in Myocardial Work during Isometric Exercise in Hypertensive Patients with Ischemic Heart Disease. A Case-Control Study. Preprints 2024, 2024091092. https://doi.org/10.20944/preprints202409.1092.v1

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MDPI and ACS Style

Caminiti, G.; Volterrani, M.; Iellamo, F.; Marazzi, G.; D'Antoni, V.; Calandri, C.; Vadala, S.; Catena, M.; Di Biasio, D.; Manzi, V.; Morsella, V.; Perrone, M. A. Acute Changes in Myocardial Work during Isometric Exercise in Hypertensive Patients with Ischemic Heart Disease. A Case-Control Study. Preprints 2024, 2024091092. https://doi.org/10.20944/preprints202409.1092.v1

APA Style

Caminiti, G., Volterrani, M., Iellamo, F., Marazzi, G., D'Antoni, V., Calandri, C., Vadala, S., Catena, M., Di Biasio, D., Manzi, V., Morsella, V., & Perrone, M. A. (2024). Acute Changes in Myocardial Work during Isometric Exercise in Hypertensive Patients with Ischemic Heart Disease. A Case-Control Study. Preprints. https://doi.org/10.20944/preprints202409.1092.v1

Chicago/Turabian Style

Caminiti, G., Valentina Morsella and Marco Alfonso Perrone. 2024 "Acute Changes in Myocardial Work during Isometric Exercise in Hypertensive Patients with Ischemic Heart Disease. A Case-Control Study" Preprints. https://doi.org/10.20944/preprints202409.1092.v1

Abstract

Abstract: Background: The acute hemodynamic response to isometric exercise in hypertensive patients ischemic heart disease (IHD) has been poorly investigated. The aim of this study was to assess acute changes on left ventricular myocardial work (MW) during isometric bilateral knee extension in patients with IHD. Methods. Twenty stable hypertensive patients with IHD and ten healthy, age-matched controls (HC) were enrolled. All subjects performed an isometric knee extension exercise, at 30% of their maximal voluntary contraction. The effort was maintained for three minutes or until exhaustion. At baseline, at peak exercise and after 10 minutes of recovery, echocardiography evaluation was perforned, blood pressure (BP) and heart rate (HR) were measurement. Results. The exercise was well tolerated by all subjects. At peak exercise: systolic BP in the IHD was significantly higher than HC (37.6± 7.2 vs 8.4±2.3 mmHg; p = 0.002). HC group had a greater increase in HR than IHD (19.7±6.2 vs 8.4±2.2 bpm; p = 0.009). E/E’ ratio increased in IHD and was unchanged in control. Global work index increased significantly in IHD compared to HC (+15% vs +3%; p 0.026). Global constructive work increased significantly in IHD compared to HC (+29.8% vs +7.4 respectively, p 0.031). Global waste work increased by 92.3% in IHD and was unchanged in HC. Global work efficiency decreased in IHD (-18%) while was unchanged in HC (between-groups p 0.019). Stroke volume decreased in IHD. and was unchanged in HC. Cardiac output was unchanged in IHD while it increased in HC. Conclusion: In patients with hypertension and underlying IHD, an acute isometric load caused a great increase in systolic BP and LV filling pressure. It follows a mostly ineffective increase of MW that fails to maintain stroke volume.

Keywords

Isometric exercise, ischemic heart disease, myocardial work

Subject

Medicine and Pharmacology, Cardiac and Cardiovascular Systems

Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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