Detection of Postoperative Respiratory Depression in High Risk Patients Utilizing Minute Ventilation Monitoring

Detection of Postoperative Respiratory Depression in High Risk Patients Utilizing Minute Ventilation Monitoring

Respiratory volume monitor (RVM) (ExSpiron) is superior to continuous pulse oximetry in detection of postoperative respiratory depression in high risk patients.

Aims are to: 1) Estimate the incidence of postoperative respiratory depression in high risk patients as detected by continuous pulse oximetry 2) Estimate the incidence of postoperative respiratory depression in high risk patients as detected by continuous respiratory volume monitor (RVM) (ExSpiron) 3) Assess the agreement between the continuous pulse oximetry and continuous respiratory volume monitor (RVM) (ExSpiron) in detection of postoperative respiratory depression in high risk patients

Inclusion Criteria:

• Patients who suffered rib fractures or patients who are weaned from mechanical ventilation and recently extubated.

Exclusion Criteria:

• Have known contraindication/allergy to neuroaxial/paravertebral nerve block anesthesia
• Patients allergic to morphine.
• Have an ASA class > IV