Ty -jour t1-肺动脉高压障碍自主神经系统干扰JF的临床相关性 - 欧洲呼吸杂志-Van de Borne,P。Y1-2009/10/01 UR -http://www.qdcxjkg.com/content/34/4/4/792.abstract N2-肺动脉高压(PAH)是一种罕见的Dyspnoea -fatigue综合征通过孤立的肺血管阻力增加(PVR)和最终的右心室衰竭定义。尽管在过去的二十年中取得了进展,但这种情况仍然很严重,中位存活率限制为5-6岁,并且持续的功能限制大约一半的幸存者1.需要进一步改进,这涉及对PAH“表型”的更好的生理病理学理解。在本期《欧洲呼吸杂志》中,Wensel等人。2将PAH的概念添加为正确的心力衰竭,并与相关的自主神经系统障碍。这些作者使用ECG和血压记录的光谱分析研究了心率的变异性和压力反射灵敏度,并将结果与​​有氧运动能力相关联。在所有频率下,患者的心率变异性的光谱能力均降低,而压力反射敏感性却钝化。这些变化与降低峰值氧气的摄取相关,这与以前在严重充血性心力衰竭中报道的非常相关。PAH在运动,休息甚至睡眠期间患有PAH过度换气的患者,这与疾病的严重程度和生存有关3-7。 The cause of hyperventilation in PAH is often assumed to be an increased physiological dead space related to extensive vascular remodelling and obliteration decreasing perfusion with respect to ventilation 4, 6, 7. However, end-tidal and arterial carbon dioxide tensions (PET,CO2 and Pa,CO2, respectively) are consistently found to be lower than normal, suggesting an additional component of increased chemosensitivity 3–7. The respective contributions of physiological dead space and chemosensitivity to hyperventilation in PAH are difficult to assess from reported expired and arterial blood respiratory gases. … ER -