Purpose The study was designed to determine the incidence of postoperative agitation following general anesthesia in 2,000 adult patients and to examine the associated risk factors. Methods The study enrolled 2,000 adults who were scheduled for surgery under general anesthesia in a single institution during December 2007 to December 2008. The following risk factors were examined: age, gender, ASA physical status, type of surgery, anesthesia technique (inhalational or intravenous), administration of neostigmine or doxapram, adequate postoperative analgesia, pain, presence of a tracheal tube, and presence of a urinary catheter. Results Agitation occurred in 426 patients (21.3%). It was more common in males (28.1%) than in females (16.1%) (P = 0.017) and more prevalent after inhalational (27.8%) than total intravenous (7.5%) anesthesia (P = 0.001). Agitation was more common after oral cavity and otolaryngological surgery than after other types of surgery. Multivariate analysis showed that use of doxapram (odds ratio [OR] = 9.2; 95% confidence interval [CI] = 6.2 -15.4; P = 0.002) and pain (OR = 8.2; 95% CI = 4.5 -16.9; P \ 0.001) were the most important risk factors associated with emergence agitation. Other causes were the presence of a tracheal tube and/or a urinary catheter. Adequate postoperative analgesia was associated with less agitation (OR = 0.4; 95% CI = 0.1 -0.4; P = 0.006). Conclusion Doxapram administration, pain, and presence of a tracheal tube and/or a urinary catheter appear to be the most important causes of postoperative agitation. To avoid this complication, it is suggested, whenever possible, to use intravenous anesthesia, to remove endotracheal tubes and urinary catheters as early as possible, and to provide adequate postoperative analgesia.
RésuméObjectif Cette e´tude a e´te´conçue afin de de´terminer l'incidence d'agitation postope´ratoire apre`s une anesthe´sie ge´ne´rale chez 2000 patients adultes et d'examiner les facteurs de risque associe´s. Méthode L'e´tude a recrute´2000 adultes devant subir une chirurgie sous anesthe´sie ge´ne´rale dans une seule institution entre de´cembre 2007 et de´cembre 2008. Les facteurs de risque suivants ont e´te´examine´s: l'aˆge, le sexe, le statut physique ASA, le type de chirurgie, la technique anesthe´sique (par inhalation ou intraveineuse), l'administration de ne´ostigmine ou de doxapram, une analge´sie postope´ratoire adapte´e, la douleur, la pre´sence d'une sonde endotrache´ale et la pre´sence d'un cathe´ter urinaire. Résultats Au total, 426 patients ont montre´des signes d'agitation (21,3 %). Elle e´tait plus courante chez les hommes (28,1 %) que chez les femmes (16,1 %) (P = 0,017) et plus pre´valente apre`s une anesthe´sie par inhalation (27,8 %) qu'apre`s une anesthe´sie re´alise´e exclusivement par intraveineuse (7,5 %) (P = 0,001). L'agitation e´tait plus fre´quente apre`s une chirurgie otorhinolaryngologique ou de la cavite´orale qu'apre`s d'autres types de chirurgie. Une analyse multivarie´e a montre´que l'utilisation de doxapram (rappo...