Saves the questions and what to expect into your notes, next to the visit they belong to.
Keep this study
Lead
Stanford University
Age
18–80
Sex
ALL
Healthy volunteers
Not accepted
You may be eligible if
Patients presenting for laser laryngeal surgery
You may not be if
1. Patients with significantly decreased myocardial function (ejection fraction \< 50%)
2. Patients with abnormal cardiac rhythm and conduction abnormalities, except for patients with isolated, asymptomatic premature atrial and ventricular contractions.
3. Patients with significant peripheral vascular disease, such as those with the symptoms of intermittent claudication.
4. Patients with known significant cerebrovascular disease, such as history of cerebrovascular accidents (CVAs) and transient ischemic attacks (TIAs) .
5. Patients with significant renal insufficiency, as manifested by estimated glomerular filtration rate (eGFR) \< 60 ml/min/1.73 m2.
6. Patients with electrolyte (K+, Ca++) abnormalities, as determined by the lab values outside of a normal range.
7. Patients with the history or symptoms of increased intracranial pressure or reduced intracranial compliance (e.g. headaches, nausea and vomiting, visual changes, mental changes).
8. Patients with skull base defects.
9. Patients with pulmonary hypertension who have pulmonary artery pressures above the normal range.
10. Patients with significant chronic obstructive or restrictive lung diseases, as manifested by known history of baseline chronic hypoxia and/or hypercapnia, and/or baseline room air oxygen saturation (SpO2) \< 95% .
11. Obese patients with BMI \> 35 kg/m2.
12. Patients with severe and poorly controlled gastroesophageal reflux disease despite medical treatment.
13. Patients with hiatal hernia and full stomach patients.
14. Patient's refusal to participate in the study.
15. Patients who do not understand English or mentally handicapped. Pregnant or breastfeeding patients.
