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本文描述了用通气灌注肺扫描(Ventilation-Perfusion lung Scan)诊断肺栓塞的两个新生儿病例,其中一例伴有持续肺高压(PPHN)征象。 PPHN与明显的心血右向左分流和全身性低氧血症有关。其机制可能是先天肺循环异常,低氧酸中毒或血管活性物质的释放引起血管收缩所致。尸检提示:血栓栓塞可导致呼吸困难和PPHN。本文试图说明围产期新生儿窒息和随后出现的呼吸困难与肺性栓塞症的关系。
This article describes two neonatal cases of pulmonary embolism diagnosed by Ventilation-Perfusion lung scan, one of which was associated with persistent pulmonary hypertension (PPHN). PPHN is associated with marked right-to-left shunt and systemic hypoxemia. The mechanism may be congenital pulmonary circulation abnormalities, hypoxic acidosis or release of vasoactive substances caused by vasoconstriction. Autopsy Tip: Thromboembolism can lead to dyspnea and PPHN. This article attempts to explain the relationship between perinatal neonatal asphyxia and subsequent dyspnea and pulmonary embolism.