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Updated: May 9, 2026
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Evaluation of Right Ventricular Function in Experimental Models of Pulmonary Arterial Hypertension
Published on: June 27, 2025
Right ventricular and septal function in patients with pulmonary hypertension
A Tulga Ulus1, Nilüfer Yıldırım Poyraz, Nurcan Arat
1Department of Cardiovascular Surgery, Türkiye Yüksek Ihtisas Hospital, Ankara, Turkey.
Heart, Lung & Circulation
|August 3, 2013
Summary
Mitral valve replacement surgery improved ventricular function and reduced pulmonary hypertension. Both Doppler tissue imaging and blood pool gated single photon emission tomography are valuable for assessing these improvements.
Area of Science:
- Cardiology
- Cardiac Surgery
- Medical Imaging
Background:
- Pulmonary hypertension (PHT) negatively impacts both right and left ventricular function.
- Mitral valve stenosis often leads to pulmonary hypertension, necessitating surgical intervention.
Purpose of the Study:
- To investigate the effects of pulmonary hypertension on ventricular and septal kinetics.
- To evaluate the functional changes in ventricles following mitral valve replacement (MVR) in patients with pulmonary hypertension.
Main Methods:
- Prospective, randomized study involving 25 patients undergoing MVR for isolated mitral stenosis.
- Patients were grouped based on preoperative pulmonary artery pressure (PAP).
- Blood pool gated single photon emission tomography (BPGS) and Doppler tissue imaging (DTI) were used to assess ventricular function.
Main Results:
- MVR significantly reduced PAP in both groups (Group 1: <50 mmHg, Group 2: ≥50 mmHg).
- Global ventricular function scores improved post-surgery, with significant improvement in Group 2.
- Right ventricular septal kinetics showed significant improvement in both groups post-MVR.
Conclusions:
- Mitral valve replacement leads to decreased pulmonary artery pressure and improved ventricular function, particularly right ventricular and septal kinetics.
- Doppler tissue imaging and BPGS are effective tools for assessing functional changes after mitral valve surgery.
Keywords:
Blood pool SPECTDoppler tissue imagingMitral stenosisMitral valve replacementPulmonary artery hypertensionMore Related Videos
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