Latar Belakang : Hipertensi pulmoner (HP) merupakan faktor independen kematian, kematian kardiovaskular, dan gagal jantung pada pengamatan 4 tahun pasien pascabedah katup mitral. Masalah pasien pascabedah thoraks adalah menurunnya fisiologi dan mekanik paru yang menyebabkan gangguan ventilasi perfusi dan hypoxia induced pulmonary vasoconstriction sehingga perbaikan HP pascabedah menjadi lambat. Tujuan Penelitian : Menilai efek latihan pernapasan sebagai adjuvan latihan fisik yang terstruktur terhadap penurunan tekanan sistolik arteri pulmoner (TSAP) pada pasien pascabedah katup mitral dengan hipertensi pulmoner. Metode : Penelitian ini merupakan studi eksperimental acak tersamar ganda dan prospektif. Kelompok perlakuan diberikan latihan pernapasan 50% volume inspirasi maksimal (VIM) sebagai adjuvan latihan fisik atau plasebo pada kelompok kontrol selama rehabilitasi fase 2. Sampel diambil secara konsekutif dari populasi terjangkau pascaoperasi katup mitral yang memenuhi kriteria inklusi dan eksklusi. Didapatkan 43 subyek yang terbagi dalam 2 kelompok yakni 21 orang kelompok perlakuan dan 22 orang kelompok kontrol. TSAP dinilai dengan ekokardiografi sebelum dan sesudah program latihan. Hasil Penelitian : Didapatkan nilai TSAP sesudah latihan pada kelompok kontrol lebih rendah secara signifikan (35 (29-39) mmHg vs 43 (40-51) mmHg;P<0.001) dan ∆TSAP kelompok perlakuan lebih besar secara signifikan (16 (12-30) mmHg vs 3.5 (2-4) mmHg;P<0.001) bila dibandingkan dengan kelompok kontrol. Kesimpulan : Terdapat penurunan TSAP yang lebih besar pada kelompok yang mendapatkan latihan pernapasan 50% VIM dibanding kelompok plasebo.

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Background: Pulmonary hypertension is an independent factor for mortality, cardiovascular mortality, and heart failure in four years observation of patients underwent mitral valve operation. In patient with open chest surgery, lung physiology and mechanic function deteriorates. This leads to ventilation perfusion mismatch and hypoxia induced pulmonary vasoconstriction, causing problems in recovery post operatively.

Objectives: To study the effect of respiratory training as an adjuvant to structured physical exercise in the decrease of pulmonary artery systolic pressure in patient with pulmonary hypertension post mitral valve surgery.

Methods: a double blind randomized trial was done, dividing 2 groups of subjects. It company the effect of respiratory training of 50% of maximum inspiratory volume (MIV) as an adjuvant intervention to the current phase 2 rehabilitation program in intervention group vs control group. Sample was taken consecutively in patient underwent mitral valve operation and fulfilled inclusion criteria. 43 subjects were divided in 2 groups. 21 patients were given respiratory training and 22 patients were in the placebo group. Systolic pulmonary artery pressure (sPAP) was measured by echocardiography before and after intervention was performed.

Result: sPAP and ∆sPAP in the intervention group were significantly lower compare to the placebo group; (35 (29-39) mmHg vs 43 (40-51) mmHg; p<0.001) and (16 (12-30) mmHg vs 3.5 (2-4) mmHg; p<0.001).

Conclusion: The decrease of sPAP was found to be significantly higher in the intervention group than placebo.