The digestive system diseases
Conditions
Interventions
Sponsors
Eligibility
Inclusion criteria
Inclusion criteria: ASA grade ?-?, age=60 years, Blood oxygen saturation = 95% Volunteer for painless colonoscopy
Exclusion criteria
Exclusion criteria: History of related drug allergies,History of nasal surgerynasal, stenosis deformity, habitual nasalbleed , Severe coagulation dysfunction, Poorly controlled or untreated hypertension, Preoperative Child liver function grade 3 or above, Weigh less than or exceed 15% of the standard body weight, Patients with craniocerebral injury may have a history of intracranial hypertension, cerebral aneurysm and cerebrovascular accident and suffer from central nervous system diseases, Participants who had participated in other drug trials 3 months prior to enrollment, The attending physician or investigator considers that there are other conditions that are not suitable for participation in this study,Unable to cooperate with the study for any reason
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| occurrence of hypoxemia; | — |
Secondary
| Measure | Time frame |
|---|---|
| respiritory rate;Heart rate; | — |
Countries
China
Contacts
Qijiang district people's hospital,Chongqing