Trevisan P
Anaesthesia and Resuscitation Operative Unit, General Hospital, Feltre (Belluno).
Minerva Anestesiol. 2002 Oct;68(10):775-81.
Anaesthetic management of a parturient with predicted difficult airway presenting for caesarean section (CS) is not a straightforward decision: general anaesthesia should be avoided because intubation can be impossible and a "cannot intubate, cannot ventilate" scenario might ensue, on the other hand regional techniques can be unsuccessful or, though rarely, have complications that require emergency intubation. The case is presented of a primigravida admitted to hospital at 37 weeks' gestation with hypertension, intrauterine growth retardation and oligohydramnios. After a few days' observation, it was decided to proceed with an elective CS. The preoperative airway examination revealed a poor mouth opening with an interdental distance of 20 mm and a Mallampati class IV. The patient was classified as a case of difficult intubation and the following anaesthetic options were considered: epidural anaesthesia, spinal anaesthesia and awake fibreoptic intubation followed by general anaesthesia. The pros and the cons of these techniques were explained to the patient and it was suggested that awake fibreoptic intubation was the safest option. The patient gave her consent, so an uneventful nasal awake fibreoptic intubation was carried out under local anaesthesia. This case report offers the opportunity to underline the risk to perform a central blockade in a parturient with predicted difficult intubation, arguing that the safest course of action is an awake fibrescopic intubation, besides some controversial points to safely perform awake fibreoptic intubation in obstetric patients are discussed.
对于预计气道困难的剖宫产产妇,麻醉管理并非易事:应避免全身麻醉,因为可能无法插管,进而可能出现“无法插管、无法通气”的情况;另一方面,区域麻醉技术可能失败,或者虽罕见但会出现需要紧急插管的并发症。本文介绍了一名初产妇,孕37周入院,患有高血压、胎儿宫内生长受限和羊水过少。经过几天观察后,决定进行择期剖宫产。术前气道检查显示张口度差,齿间距离为20毫米,Mallampati分级为IV级。该患者被归类为插管困难病例,并考虑了以下麻醉选择:硬膜外麻醉、脊髓麻醉和清醒纤维光导喉镜插管后全身麻醉。向患者解释了这些技术的利弊,并建议清醒纤维光导喉镜插管是最安全的选择。患者表示同意,因此在局部麻醉下顺利进行了经鼻清醒纤维光导喉镜插管。本病例报告强调了在预计插管困难的产妇中进行中枢神经阻滞的风险,认为最安全的做法是清醒纤维光镜插管,此外还讨论了在产科患者中安全进行清醒纤维光导喉镜插管的一些争议点。