Objective:To study the effect of propofol ketamine on ventilation function and respiratory mechanics during cervical plexus block for cervical vertebra surgery Methods:32 patiants having undergone elective cervical vertebra surgery were randomly divided into two groups (n=16) after cervical plexus block : Group Ⅰ received propofol ketamine and Group Ⅱ received propofol .

Effects of laparoscopic surgical procedures on ventilatory function in patient with abdominal trauma or acute abdomen;

Relationship between ventilatory function and body composition in overweight and obese adolescents;

Objective To explore the application of ventilatory function examination of auditory tube in the physical examination for pilot recruitment.

Objective: To evaluate the effect of dead space (VD) loading on ventilation and respiratory muscle function, test a novel measurement of oxygen consumption of respiratory muscle, and analyze the effect of oxygen consumption of respiratory muscle on exercise performance.