Dyspnea After Interscalene Nerve Block
Conditions
Brief summary
The study aims to explore if Maximum Inspiratory Pressure can predict postoperative breathlessness in obese patients receiving interscalene blocks for shoulder surgery. The main question is: does baseline Maximum Inspiratory Pressure have any association with postoperative breathlessness after interscalene blocks in class 2 or higher obese patients (BMI\>35). Preoperative and postoperative lung volumes, pressures, breathlessness score and respiratory outcomes will be measured on participants already receiving shoulder surgery with interscalene blocks.
Interventions
DIAGNOSTIC_TESTMaximum Inspiratory Pressure monitoring
Lung volumes, pressures and breathlessness scores to be measured in pre and post operative phase of care on the same day
Sponsors
University of North Carolina, Chapel Hill
Study design
Observational model
COHORT
Time perspective
PROSPECTIVE
Eligibility
Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No
Inclusion criteria
Groups 1 and 2 * Adults \>18 years of age receiving shoulder surgery with preoperative interscalene block and general anesthesia; * Speak English; Group 3 · Adults \>18 years of age receiving cystoscopy or lower extremity procedures receiving general endotracheal anesthesia
Exclusion criteria
All Groups * Less than 18 years of age; * currently pregnant; * currently incarcerated; * those with significant neuromuscular disease, tracheo-bronchial structural abnormalities, severe respiratory or severe cardiovascular comorbidity; * those undergoing intra-abdominal or intrathoracic surgeries due to the potential to independently effect breathing
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Incidence of Moderate to Severe Breathlessness | Baseline (Arrival to pre-operative phase), Recovery (Immediately post-surgical, up to 3 hours) | Score of 3 or above on Modified Borg Breathlessness Scale |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Oxygen Saturation in post-anesthesia care unit | Recovery (Immediately post-surgical, up to 3 hours) | Measured by pulse oximetry |
| Post-anesthesia care unit length-of-stay | Recovery (Immediately post-surgical, up to 3 hours) | Total time spent in post-operative phase of care |
| Duration of Oxygen supplementation in post-anesthesia care unit | Recovery (Immediately post-surgical, up to 3 hours) | Total duration of oxygen supplementation in post-operative phase of care |
Countries
United States
Outcome results
None listed