There are multiple definitions:

1. Salmonella pathogenicity island(English)

   • Bacteriology, Pathology

2. serial port interface(English)

   • Data exchange

3. Surgical Pleth Index(English)

   • a representative objective nociception monitoring device that measures nociception using photoplethysmographic signals. It is easy to apply to patients, and the numerical calculation formula is intuitively easy to understand
   • NRS, PONV
   • Surgery, Pain, Monitoring
   • https://doi.org…000605231198386
   • https://doi.org….4097/kja.23158