2D speckle tracking echocardiography of the right ventricle free wall in SCUBA divers after single open sea dive
| Autor: | Darija Bakovic, Ivica Vuković, Ivana Banic, Ante Obad, Darko Duplančić, Zeljko Dujic, Denise Brusoni, Zora Susilovic-Grabovac, Piergiuseppe Agostoni |
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| Rok vydání: | 2017 |
| Předmět: |
Adult
Male medicine.medical_specialty Physiology Diving Heart Ventricles Hemodynamics 030204 cardiovascular system & hematology Free wall 03 medical and health sciences 0302 clinical medicine Afterload Open sea Physiology (medical) Internal medicine 2d speckle tracking medicine 2D speckle tracking human right heart SCUBA Humans Cardiac imaging Pharmacology business.industry 030229 sport sciences Middle Aged medicine.anatomical_structure Ventricle Echocardiography Breathing Cardiology Ventricular Function Right business human activities |
| Zdroj: | Clinical and experimental pharmacologyphysiology. 45(3) |
| ISSN: | 1440-1681 |
| Popis: | The presence of circulating gas bubbles and their influence on pulmonary and right heart hemodynamics was reported after uncomplicated self-contained underwater breathing apparatus (SCUBA) dive(s). Improvements in cardiac imaging have recently focused great attention on the right ventricle (RV). The aim of our study was to evaluate possible effects of a single air SCUBA dive on RV function using 2D speckle tracking echocardiography in healthy divers after single open sea dive to 18 meters of seawater, followed by bottom stay of 47 minutes with a direct ascent to the surface. Twelve experienced male divers (age 39.5 ± 10.5 years) participated in the study. Echocardiographic assessment of the right ventricular function (free wall 2 D strain, tricuspid annular planes systolic excursion [TAPSE], lateral tricuspid annular peak systolic velocity [RV s`] and fractional area change [FAC]) was performed directly prior to and 30, 60, 90 and 120 minutes after surfacing. Two-dimensional strain of all three segments of free right ventricular wall showed a significant increase in longitudinal shortening in post-dive period for maximally 26% (basal), 15.4% (mid) and 16.3% (apical) as well as TAPSE (11.6%), RV FAC (19.2%), RV S` (12.7%) suggesting a rise in systolic function of right heart. Mean pulmonary arterial pressure (mean PAP) increased post-dive from 13.3 mmHg to maximally 23.5 mmHg (P = .002), indicating increased RV afterload. Our results demonstrated that single dive with significant bubble load lead to increase in systolic function and longitudinal strain of the right heart in parallel with increase in mean PAP. |
| Databáze: | OpenAIRE |
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