Ultrasound-guided supraclavicular blockade with 30 mL of 0.5% ropivacaine produced complete hemidiaphragmatic paralysis in approximately one-third of patients. The infraclavicular approach greatly reduced this risk but did not eliminate it. These data may aid in the selection of the approach to brachial plexus blockade, particularly in ambulatory patients and/or those with respiratory comorbidities.

Patients undergoing major head and neck surgery are at high risk of PPCs. Advanced age and hypertension significantly correlated with PPCs. PPCs correlate with prolonged ICU and hospital stays, and increased mortality. Further research is needed to define risk factors, useful investigations, and effective optimization strategies to mitigate PPCs.

No abstract