[Effect of exchange of tracheal tube for laryngeal mask airway(LMA) on intratracheal extubation stress response under deep anesthesia level after surgery in elderly patients with hypertension].

Objective: To investigate the effect of exchange of tracheal tube for a laryngeal mask airway (LMA) on intratracheal extubation stress response under deep anesthesia level after surgery in elderly patients with hypertension.

Methods: From October 2008 to June 2009, 40 hypertension patients aged from 65 to 78 years scheduled for upper abdominal surgery were randomly divided into 2 groups, one was extubated intratracheal tube when being awake (group TT, n = 20) and the other was extubated and exchanged for LMA under deep anesthesia (group LM, n = 20). The American Society of Anesthesiologists (ASA) of the patients were I o rII.