SNAP 3: An observational study to understand frailty and delirium in older surgical patients

The 3rd Sprint National Anaesthesia Project (SNAP): An observational study of frailty, multimorbidity and delirium in older people in the perioperative period

Status

Active, not recruiting

Phases

Unknown

Study type

Observational

Source

ISRCTN

Registry ID

ISRCTN67043129

Enrollment

8000

Registered

2021-12-08

Start date

2022-03-21

Completion date

Unknown

Last updated

2025-04-21

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

The identification and management of frailty in older surgical patients. The identification and prevention of delirium in older surgical patients. The identification and management of multimorbidity in older surgical patients. Other

Interventions

This study is observational, all interventions are surveys or validated tools that involve speaking with participants. The study will record details of participants' medical history, surgical histo

a Clinical Frailty Scale and the Edmonton Frail Scale. If a hospital records an Electronic Frailty Index, then this will be recorded. After the participant has had surgery, details of intraoperative

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: 1. 60 years or older 2. Undergoing a surgical procedure on 21st-25th March 2022 (either elective or emergency) 3. Either have the capacity or have an appropriate consultee/personal legal representative to agree to participation on the participant's behalf

Exclusion criteria

Exclusion criteria: 1. Very minor surgery eg. cataracts, endoscopy, tracheostomy 2. ASA VI

Design outcomes

Primary

Measure	Time frame
Length of acute hospital stay (days) after surgery collected via data linkage at the end of the study	—

Secondary

Measure	Time frame
1. Planned surgical procedure taken from participant notes on day of surgery 2. Urgency of surgery (emergency, urgent, expedited, planned) taken from participant notes on day of surgery 3. Indication for surgery: cancer / non-cancer taken from participant notes on day of surgery 4. Co-morbidities from defined list taken from participant or participant notes on day of surgery 5. Count of regular medications from defined list taken from participant or participant notes on day of surgery 6. Age from participant notes on day of surgery 7. Sex at birth from participant on day of surgery 8. Gender from participant on day of surgery 9. Ethnicity from participant on day of surgery 10. Body mass index from participant notes/height/weight measurement on day of surgery 11. Most recent laboratory test results (measured within 6 weeks of admission) recorded on day of surgery: 11.1 Full blood count (Haemoglobin, red cell distribution width, white cell count (total), lymphocyte: neutrophil ratio 11.2 Creatinine & electrolyte 11.3 SARS-Cov-2 status (Positive/not positive (nasopharyngeal swab) 12. Surgery specific risk score: ASA status recorded on day of surgery 13. Surgery specific risk score: SORT version 2 score recorded on day of surgery 14. Comorbidity/multimorbidity measured using Charlson Comorbidity Index on day of surgery 15. Source of admission (Home (including level of support), residential home / retirement complex, care home) reported by participant or participant notes on day of surgery 16. Postcode (surrogate for socio-economic deprivation status) recorded from participant or participant notes on day of surgery 17. Highest education level (surrogate for a socioeconomic model) using UK Census 2011 list, recorded from participant or participant notes on day of surgery 18. Frailty recorded by Clinical Frailty Scale and Edmonton Frail Scale on day of surgery 19. Frailty recorded by electronic Frailty Index (eFI) recorded from hospital notes 20. Frailty recorde	—

Measure

Time frame

1. Planned surgical procedure taken from participant notes on day of surgery 2. Urgency of surgery (emergency, urgent, expedited, planned) taken from participant notes on day of surgery 3. Indication for surgery: cancer / non-cancer taken from participant notes on day of surgery 4. Co-morbidities from defined list taken from participant or participant notes on day of surgery 5. Count of regular medications from defined list taken from participant or participant notes on day of surgery 6. Age from participant notes on day of surgery 7. Sex at birth from participant on day of surgery 8. Gender from participant on day of surgery 9. Ethnicity from participant on day of surgery 10. Body mass index from participant notes/height/weight measurement on day of surgery 11. Most recent laboratory test results (measured within 6 weeks of admission) recorded on day of surgery: 11.1 Full blood count (Haemoglobin, red cell distribution width, white cell count (total), lymphocyte: neutrophil ratio 11.2 Creatinine & electrolyte 11.3 SARS-Cov-2 status (Positive/not positive (nasopharyngeal swab) 12. Surgery specific risk score: ASA status recorded on day of surgery 13. Surgery specific risk score: SORT version 2 score recorded on day of surgery 14. Comorbidity/multimorbidity measured using Charlson Comorbidity Index on day of surgery 15. Source of admission (Home (including level of support), residential home / retirement complex, care home) reported by participant or participant notes on day of surgery 16. Postcode (surrogate for socio-economic deprivation status) recorded from participant or participant notes on day of surgery 17. Highest education level (surrogate for a socioeconomic model) using UK Census 2011 list, recorded from participant or participant notes on day of surgery 18. Frailty recorded by Clinical Frailty Scale and Edmonton Frail Scale on day of surgery 19. Frailty recorded by electronic Frailty Index (eFI) recorded from hospital notes 20. Frailty recorde

—

Countries

England, Northern Ireland, Scotland, United Kingdom, Wales

Contacts

Public ContactKaren Williams

kwilliams@rcoa.ac.uk+44(0)2070921500

Outcome results

None listed

Source: ISRCTN (via WHO ICTRP) · Data processed: Feb 7, 2026