Nagel Christian, Benjamin Nicola, Egenlauf Benjamin, Eichstaedt Christina A, Fischer Christine, Palevičiūtė Eglė, Čelutkienė Jelena, Harutyunova Satenik, Mayer Eckhard, Nasereddin Mohammed, Marra Alberto M, Grünig Ekkehard, Guth Stefan
Center for Pulmonary Hypertension, Thoraxklinik Heidelberg gGmbH at Heidelberg University Hospital, Heidelberg, Germany.
Department of Respiratory Care Medicine and Thoracic Surgery, Klinikum Mittelbaden, Baden-Baden Balg, Baden-Baden, Germany.
Respiration. 2021;100(5):369-378. doi: 10.1159/000512316. Epub 2021 Mar 25.
Pulmonary arterial compliance (PAC) is a prognostic parameter in pulmonary arterial hypertension (PAH) reflecting the elasticity of the pulmonary vessels.
The objective of this post hoc analysis of a prospective randomized controlled trial (RCT) was to assess the effect of exercise training on PAC and stroke volume (SV) in patients with PAH and persistent/inoperable chronic thromboembolic pulmonary hypertension (CTEPH).
From the previous RCT, 43 out of 87 patients with severe PAH (n = 29) and CTEPH (n = 14) had complete haemodynamic examinations at baseline and after 15 weeks by right heart catheterization and were analysed (53% female, 79% World Health Organization functional class III/IV, 58% combination therapy, 42% on supplemental oxygen therapy, training group n = 24, and control group n = 19). Medication remained unchanged for all patients.
Low-dose exercise training at 4-7 days/week significantly improved PAC (training group 0.33 ± 0.65 mL/mm Hg vs. control group -0.06 ± 1.10 mL/mm Hg; mean difference 0.39 mL/mm Hg, 95% confidence interval [CI] 0.15-0.94 mL/mm Hg; p = 0.004) and SV (training group 9.9 ± 13.4 mL/min vs. control group -4.2 ± 11.0 mL/min; mean difference 14.2 mL, 95% CI 6.5-21.8 mL; p < 0.001) in the training versus control group. Furthermore, exercise training significantly improved cardiac output and pulmonary vascular resistance at rest, peak oxygen consumption, and oxygen pulse.
Our findings suggest that supervised exercise training may improve right ventricular function and PAC at the same time. Further prospective studies are needed to evaluate these findings.
肺动脉顺应性(PAC)是肺动脉高压(PAH)的一个预后参数,反映肺血管的弹性。
这项对一项前瞻性随机对照试验(RCT)的事后分析的目的是评估运动训练对PAH和持续性/不可手术的慢性血栓栓塞性肺动脉高压(CTEPH)患者的PAC和每搏输出量(SV)的影响。
在前一项RCT中,87例重度PAH患者(n = 29)和CTEPH患者(n = 14)中有43例在基线时和15周后通过右心导管检查进行了完整的血流动力学检查并接受分析(女性占53%,世界卫生组织功能分级III/IV级占79%,联合治疗占58%,接受补充氧气治疗占42%,训练组n = 24,对照组n = 19)。所有患者的药物治疗均保持不变。
每周4 - 7天的低剂量运动训练显著改善了PAC(训练组0.33±0.65 mL/mm Hg vs.对照组 - 0.06±1.10 mL/mm Hg;平均差异0.39 mL/mm Hg,95%置信区间[CI] 0.15 - 0.94 mL/mm Hg;p = 0.004)和SV(训练组9.9±13.4 mL/min vs.对照组 - 4.2±11.0 mL/min;平均差异14.2 mL,95% CI 6.5 - 21.8 mL;p < 0.001),训练组与对照组相比。此外,运动训练显著改善了静息时的心输出量和肺血管阻力、峰值耗氧量和氧脉搏。
我们的研究结果表明,有监督的运动训练可能同时改善右心室功能和PAC。需要进一步的前瞻性研究来评估这些结果。