n.发绀，发绀病；苍白病；黄萎病

The patient presented with central cyanosis, indicating deoxygenated blood in the arterial circulation.
患者表现出中心性紫绀，表明动脉血中存在脱氧血液。
Acute respiratory distress syndrome can lead to peripheral cyanosis due to poor oxygenation of the extremities.
急性呼吸窘迫综合征可能导致末梢部位因氧合不足而出现周围性紫绀。
Cyanosis was evident around her lips and fingernails, suggesting inadequate oxygen supply to her tissues.
她的嘴唇和指甲周围明显出现紫绀，这暗示着她的组织供氧不足。
In cases of congenital heart defects, persistent cyanosis might be an indication for early surgical intervention.
在先天性心脏病病例中，持续存在的紫绀可能是早期手术干预的标志。
After prolonged exposure to high altitudes, climbers may develop cyanosis as a symptom of altitude sickness.
高山登山者在长时间暴露于高海拔后，可能会出现紫绀作为高原反应的症状。
A thorough examination revealed that the newborn had central cyanosis caused by a heart defect.
详细检查发现新生儿由于心脏缺陷出现了中心性紫绀。
The patient's blue discoloration, or cyanosis, is a critical sign of potential hypoxemia.
病人的蓝色变色，即紫绀，是潜在低氧血症的一个关键征兆。
Cyanosis developed rapidly after the patient suffered from a pulmonary embolism.
患者发生肺栓塞后，迅速出现了紫绀现象。
In this case, the child's bluish skin color (cyanosis) could indicate a problem with his circulatory system.
在这个案例中，孩子的青紫色皮肤（紫绀）可能表明他的循环系统存在问题。
Without immediate treatment, the patient's cyanosis worsened, leading to severe respiratory failure.
若未得到及时治疗，患者的紫绀状况会恶化，进而导致严重的呼吸衰竭。