Prospective Study to Evaluate Mapleson Circuit With Monitored Anesthesia Care During Endobronchial Ultrasound (EBUS) Bronchoscopy

If the investigators can prove that the use of a mapleson circuit attached to a nasal trumpet employed during monitored anesthesia care leads to less sedation requirements, less procedure interruptions, shorter procedure duration, this would allow for to standardization of the type of anesthetic employed for EBUS at the investigators' institution and elsewhere. Less hypoxic episodes and less anesthetic requirements would benefit outcomes, lead to less recovery time and earlier discharges. Shorter procedural duration will create greater efficiency in the short procedure unit where the EBUS are performed.

Sex

All

Minimum age

18 Years

Inclusion Criteria:

1. Age\> 18
2. Patient undergoing EBUS bronchoscopy
3. Patient undergoing moderate conscious sedation

Exclusion Criteria:

1. Subjects age \<18
2. Subjects requiring general anesthesia
3. Subjects with previous nasal surgeries
4. Subjects with Oxygen saturation \< 90% on room air prior to procedure
5. Subjects who are pregnant
6. Subjects with known facial fractures or recent facial trauma
7. Subjects on any anticoagulation that cannot be discontinued prior to the procedure