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周围静脉注射对比剂的对比超声心动图是一种已确立的诊断心内和肺内分流病变的方法.在静脉注射盐水或其它液体后,右心腔出现所谓“对比回声”.正常时,当血液经过肺毛细血管床时这些对比回声即消失.在左心出现对比性回声就是明显异常,说明心内或肺内有自右至左的分流.在这方面,对比超声心动图较血氧分析法更为敏感.本文报道在卵圆孔未闭患者即使右心压力正常时,对比超声心动图也可呈阳性.方法:11例右心压力正常的卵圆孔未闭患者,
Comparison of Peripheral IV Contrast Agents Echocardiography is an established method of diagnosing both intracardiac and pulmonary shunts, and the so-called “contrast echoes” appear in the right heart cavity after intravenous saline or other fluids. , These contrast echoes disappear as the blood passes through the pulmonary capillary bed and the contrast echo in the left heart is clearly abnormal, indicating a right-to-left shunt in the heart or lung. In this regard, the contrast echocardiogram is more blood Oxygen analysis is more sensitive.This paper reports in patients with patent foramen ovale even if right heart pressure is normal, the contrast echocardiography can also be positive.Methods: 11 cases of right-normal pressure in patients with patent foramen ovale,