[Expert Solution]: Which patient would be a good candidate…

Which patient would be a good candidate for EtCO2 monitoring? 25 year old female s/p central venous line placement with two doses of lidocaine 59 year old mechanically vented male on sedation s/p bronchoscopy 78 year old male on bipap with orders for comfort measures 66 year old female with obstructive sleep apnea s/p Cardiac Cath