The effect of pulmonary hypertension on ovine tricuspid annular dynamics

European Journal of Cardio-thoracic Surgery : Official Journal of the European Association for Cardio-thoracic Surgery
Marcin MalinowskiTomasz A Timek

Abstract

Pulmonary hypertension (PHT) is associated with tricuspid annular dilatation, but the effect of acute increase of pulmonary pressure on three-dimensional (3D) tricuspid annular dynamics and shape is unknown. Better understanding of tricuspid annular dynamics may lead to improved and more durable surgical reparative techniques. In nine open-chest anaesthetized sheep nine sonomicrometry crystals were implanted on the right ventricle while on cardiopulmonary bypass. Additional nine crystals were implanted around the tricuspid annulus (TA) with one crystal at each commissure defining three separate annular regions: anterior, posterior and septal. Two additional equidistant crystals were implanted between each commissure, creating three segments for every region. Pressure transducers were placed in the left ventricular (LV), right ventricular (RV) and right atrium. PHT was induced by acute pulmonary artery constriction with a pneumatic occluder. Sonomicrometry and echocardiographic data were collected before and after induction of PHT. TA area, regional and total perimeter, and 3D annular geometry were calculated from 3D crystal coordinates. Regional annular contraction was defined as the percentage difference between maximal and mi...Continue Reading

References

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Citations

May 23, 2016·Interactive Cardiovascular and Thoracic Surgery·Marcin MalinowskiTomasz A Timek
Mar 23, 2017·Interactive Cardiovascular and Thoracic Surgery·Marcin MalinowskiTomasz A Timek
Jan 31, 2019·European Journal of Cardio-thoracic Surgery : Official Journal of the European Association for Cardio-thoracic Surgery·Marcin MalinowskiTomasz A Timek
Jun 3, 2018·Cardiovascular Engineering and Technology·Manuel K RauschTomasz A Timek
Apr 14, 2019·Biomechanics and Modeling in Mechanobiology·M MathurM K Rausch
Nov 16, 2017·Annals of Biomedical Engineering·Manuel K RauschTomasz A Timek
Feb 14, 2019·Cardiovascular Engineering and Technology·Shelly Singh-GryzbonAjit P Yoganathan
Nov 18, 2019·The Journal of Thoracic and Cardiovascular Surgery·Marcin MalinowskiTomasz A Timek
Mar 10, 2021·The Journal of Thoracic and Cardiovascular Surgery·Marcin MalinowskiTomasz A Timek
Nov 6, 2018·The Journal of Thoracic and Cardiovascular Surgery·Marcin MalinowskiTomasz A Timek
Jan 27, 2019·The Journal of Thoracic and Cardiovascular Surgery·Tomasz JazwiecTomasz A Timek

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