摘要
目的探讨多普勒超声检测上腔静脉(SVC)正向血流速度对慢性阻塞性肺病(COPD)患者肺动脉高压(PH)的临床价值。方法检测48例COPD患者的SVC收缩期正向血流速度随呼吸的变化,并应用三尖瓣反流法计算肺动脉压力。结果根据肺动脉压力结果将患者分为两组:病例组26例(肺动脉压力>30mmHg),对照组22例(肺动脉压力<30mmHg),病例组的肺动脉压显著增高,吸气时两组的SVC收缩期正向血流速度(Vins)差异无统计学意义(P>0.05);呼气时病例组的SVC收缩期最大正向血流速度(Vexp)和Vexp/Vins明显高于对照组(P<0.05)。结论SVC收缩期正向血流速度随呼吸变化是评价COPD患者肺动脉高压的有效指标。
Objective To measure the pulmonary hypertension （PH） by assessing respiration variation of the superior vena cava （SVC） flow in patients with chronic obstructive pulmonary disease （COPD） by Doppler echocardiography. Method SVC Doppler flow velocities were examined in 48 patients with COPD and the pulmonary pressure was calculated by tricuspid regurgitant Doppler velocities. PH was determined to be positive if the pulmonary pressure exceeded 30mmHg. Results The patients were divided into two groups： patients group （26 patients with PH） and control group （22 patients without PH）. Patients group with PH was significantly higher than that in control group. There was no significant difference in the maximal SVC peak systolic forward flow velocity during inspiration （Vins） between the two groups. However, during expiration the minimal SVC peak systolic forward flow velocity （Vexp） and Vexp/Vins in the patients group was significantly higher than that in the control group （P 〈 0.05）. Conclusion Respiratory variation of SVC systolic forward flow was an effective index for evaluating presence and severity of PH in patients with COPD.
出处
《宁夏医学杂志》
CAS
2009年第6期527-528,共2页
Ningxia Medical Journal
关键词
多普勒超声
上腔静脉
慢性阻塞性肺病
肺动脉高压
Echocardiography
Doppler
Superior vena cava
Chronic obstructive pulmonary diseases
Pulmonary hypertension
