多普勒超声对胎儿房性期前收缩常压氧治疗前后的评价

Doppler ultrasound in evaluating the curative effect of normobaric oxygen therapy on fetal atrial premature contractions

目的 应用多普勒超声评价常压氧疗法治疗胎儿房性期前收缩的疗效。方法 对多普勒超声确诊 173例未合并先天性心脏病的房性期前收缩胎儿 (偶发、频发、房早未下传 )行常压氧疗法治疗 ;对照组 63例为单纯性房性期前收缩未行常压氧疗法治疗者。结果 ① 173例房性期前收缩经常压氧疗法治疗第 2疗程平均转归率为 97.8% ;②瓣膜反流减轻或消失 ,心包积液减轻或吸收 ,外周血流频谱明显改善 (P<0 .0 5 ) ;③对照组 63例中 12例属停止饮用兴奋性饮品后期前收缩消失 ,11例随孕周增加而加重 ,1例发生短阵房性心动过速。结论 短时间间歇性孕妇面罩常压氧疗法可明显提高胎儿血氧分压而不会降低胎血中的pH值 ,增加胎儿氧的供应和利用 ,有效地控制胎儿房性期前收缩 ,且舒适、安全、可靠。

Objective To evaluate the curative effect of normobaric oxygen therapy on fetal atrial premature contractions(PACs) with Doppler ultrasound. Methods Maternal normobaric oxygen therapy was performed in one hundred and seventy three fetus with PACs but without congenital heart disease diagnosed by Doppler echocardiography. Another 63 cases with isolated PACs receiving no therapy served as controls. Results (1) The average ratio of full recovery in the second course of treatment was 97.8 % in one hundred and seventy three fetus with PACs; (2) The valves′ regurgitation volume reduced or disappeared, the pericardial edema′s volume reduced or absorbed and the peripheral blood flow improved obviously (P< 0.05 ). Conclusions Normobaric oxygen therapy in short time and discontinuity through mother with face mask can enhance the oxygen pressure in fetal blood, increase the supply and utilization of oxygen and cure the atrial premature contractions effectively and safely.