Right ventricular mechanical and energetic properties.

  title={Right ventricular mechanical and energetic properties.},
  author={Osamu Yamada and Tetsuro Kamiya and Hiroyuki Suga},
  journal={Japanese circulation journal},
  volume={53 10},
To formulate right ventricular (RV) mechanical and energetic properties in terms of the time-varying elastance model, Emax and the systolic pressure-volume area (PVA) of RV were measured in the excised cross-circulated heart preparation, while the left ventricle was beating unloaded. Emax of RV was constant, and independent of the RV volume, the stroke volume, the ejection velocity, and the pre-ejection period in the control contractile state. Enhancement of the contractile state with calcium… 
Force-time integral does not improve predictability of cardiac O2 consumption from pressure-volume area (PVA) in dog left ventricle
It is concluded that the addition of FTI to PVA does not improve the predictability ofVO2 from PVA in ordinary contractions, and PVA is superior to FTI as a predictor of VO2.
The Contribution of Glycolysis, Glucose Oxidation, Lactate Oxidation, and Fatty Acid Oxidation to ATP Production in Isolated Biventricular Working Hearts from 2-Week-Old Rabbits
It is demonstrated that by 2 wks of age in rabbits, fatty acids are the major source of energy in the heart, and although the contribution of glucose oxidation to ATP production has increased compared with 1− or 7-d-old rabbit hearts, glucose oxidation rates are still low compared with adult hearts.
Interpretation of a new biomarker for the right ventricle introduced to evaluate the severity of pulmonary arterial hypertension
This research presents a novel, scalable and scalable approach that allows for real-time decision-making in the rapidly changing environment and aims to improve the quality of life of patients with potentially life-threatening heart attacks.
Pathophysiology of right ventricular failure
  • C. Greyson
  • Medicine, Engineering
    Critical care medicine
  • 2008
This review will focus on the pathophysiology of acute right ventricular failure in the critical care setting and summarize the limited management options available.
Hemodynamic Consequences of Thoracic Artificial Lung Attachment Configuration: A Computational Model
A computational model is developed to study hemodynamic consequences of TAL attachment configuration under pathologic conditions and suggests that reducing the large “minor loss” resistances at the graft anastomoses to the pulmonary artery would improve the hemodynamics of all Tal attachment configurations.
Mono and Bi-ventricular Assistance: Their Effect on Ventricular Energetics
In general, the greatest hemodynamic improvement does not correspond to the highest energetic improvement and the energetics optimisation in bi-ventricular assistance is closely related to the right Emax, which could probably be a deciding factor in the choice of the assistance mode.