Abstract：
STUDY OBJECTIVE:To investigate intracuff pressure changes in the ProSeal Laryngeal Mask Airway (PLMA) during 50% nitrous oxide (N₂O) anesthesia. DESIGN:Prospective, randomized study. SETTING:Operating room of a university-affiliated hospital. PATIENTS:40 ASA 1 and 2 children, aged 2 to 6 years, weighing 10-20 kg, undergoing elective inguinal herniorrhaphy with general anesthesia. INTERVENTIONS AND MEASUREMENTS:Patients were assigned to two groups (n = 20). Patients in Group A were anesthetized with 50% N(2)O in oxygen and sevoflurane, while patients in Group B were anesthetized with 50% air in oxygen and sevoflurane. PLMA cuffs were inflated with air. PLMA intracuff pressures starting from a baseline pressure of 30 mmHg were recorded using a pressure transducer for 30 minutes. The occurrence of postoperative throat discomfort was recorded. MAIN RESULTS:In Group A, who inhaled 50% N₂O for 30 minutes, intracuff pressures reached 86.7 ± 10.4 mmHg, while in Group B, who inhaled 50% air for 30 minutes, intracuff pressures were 29.7 ± 1.0 mmHg. The postoperative throat complication rate in Group A was 45%, which was significantly higher than in Group B (5%). CONCLUSION:PLMA intracuff pressure increased significantly during 50% N₂O anesthesia. The children's postoperative throat complication rate also was increased.
journal_name
J Clin Anesthjournal_title
Journal of clinical anesthesiaauthors
Chen BZ,Luo LH,Jiang L,Wang RR,Li J,Tan Ldoi
10.1016/j.jclinane.2010.09.004subject
Has Abstractpub_date
2011-05-01 00:00:00pages
214-7issue
3eissn
0952-8180issn
1873-4529pii
S0952-8180(11)00108-5journal_volume
23pub_type
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