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患儿女,年龄14个月。体重10kg。因右肺上中叶囊腺癌样变在全麻下行右上肺叶切除术。手术经第五肋间右后外切口进行。术前在基础麻醉下放置骶部硬膜外导管4cm。手术结束前1小时15分经骶管注入吗啡0.75mg。术终常规拮抗肌松剂作用并拔除气管导管。患儿送回ICU。在骶管给吗啡5个半小时后,患儿啼哭,胸壁僵硬,呼气时需动用呼吸辅助肌。虽吸入纯O_2(1L/min),pH=7.21,PaCO_2为64mmHg,PaO_294mmHg。由于骶管注入吗啡的作用时间比预料的短,故试注入0.25%布比卡因10ml。20分钟后患儿停止摒气,安静,潮气量较前增大。此时针刺感觉
Children with children, age 14 months. Weight 10kg. Due to right middle lobe cystadenocarcinoma-like change in general anesthesia right upper lobe resection. Surgery by the fifth intercostal right posterior incision. Preoperative basic anesthesia placed sacral epidural catheter 4cm. 1 hour before the end of surgery 15 points into the caudal morphine 0.75mg. The role of muscle relaxants and routine tracheal catheter removed. Children returned to the ICU. In the sacral tube to morphine 5 and a half hours later, children crying, chest wall stiffness, expiratory need to use the respiratory assistance muscle. Although inhaled pure O_2 (1L / min), pH = 7.21, PaCO_2 64mmHg, PaO_294mmHg. As the role of caudal injection of morphine shorter than expected, it is injected into 0.25% bupivacaine 10ml. 20 minutes after the child stopped gas, quiet, increased tidal volume than before. Acupuncture at this time feeling