Hemodynamic response to sildenafil, nitric oxide, and iloprost in primary pulmonary hypertension

被引:89
作者
Leuchte, HH [1 ]
Schwaiblmair, M [1 ]
Baumgartner, RA [1 ]
Neurohr, CF [1 ]
Kolbe, T [1 ]
Behr, F [1 ]
机构
[1] Univ Munich, Klinikum Grosshadern, Dept Internal Med 1, Pulm Dis Sect, D-8000 Munich, Germany
关键词
hypertension; iloprost; medical subject heading; nitric oxide; pulmonary; sildenafil;
D O I
10.1378/chest.125.2.580
中图分类号
R4 [临床医学];
学科分类号
1002 ; 100602 ;
摘要
Study objectives: Different vasodilators and different routes of application are used for the treatment of primary pulmonary hypertension (PPH). Recently, sildenafil, a phosphodiesterase-V inhibitor, has been shown to have beneficial hemodynamic effects in PPH. However, the hemodynamic effects of sildenafil have not been characterized and compared to other vasodilators such as inhaled nitric oxide (NO) or iloprost in PPH in the same group of patients. Study design: We investigated prospectively 10 consecutive patients with PPH using iNO, iloprost aerosol, and oral sildenafil to test acute hemodynamic response during right-heart catheterization. Results; iNO, iloprost aerosol, and sildenafil caused a significant fall of mean pulmonary artery pressure and pulmonary vascular resistance (PVR) [p < 0.05]. Correspondingly, cardiac output and mixed venous saturation increased slightly in all groups. Systemic arterial pressure and vascular resistance were mainly unaltered. Using a PVR reduction of greater than or equal to 20% to define a significant response, 7 of 10 patients were responders to iloprost aerosol, whereas 4 of 10 patients responded to iNO and oral sildenafil. Improvement of oxygenation as indicated by an increase of arterial oxygen tension was observed with iloprost aerosol (p < 0.01). Conclusion: All of the three substances, iNO, iloprost aerosol, and oral sildenafil, significantly improved pulmonary hemodynamics in patients with PPH. The most prominent hemodynamic effects and improvement of oxygenation were observed with iloprost aerosol.
引用
收藏
页码:580 / 586
页数:7
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