Referrals to the clinic

An important part of the Pre-Operative Assessment process involves identifying which patients who should be seen in person at the clinic. Ideally, patients would undergo a basic screening in order to decide if there are any indications for an in-person assessment. Given the limitations on information exchange that are inherent in the current medical ecosystem, a simplified approach has been taken to ensure that at-risk patients are seen in the clinic.

Current triage criteria involve a combination of the patient’s age and the severity of the surgical procedure, and are outlined in more detail below.

Patient Age

After a review of guidelines relating to the risk of cardiovascular, pulmonary, and functional complications14, an age of 60 years old has been selected as the threshold for automatic assessment of patients undergoing certain surgical procedures.

Surgical severity

A comprehensive review was undertaken to update the classification of surgical procedures that are performed electively in The Beacon Hospital. In line with work by the Surgical OUtcomes Resource CEntre5 (SOuRCe), The Clinical Coding & Schedule Development Group, and with minor amendments to account for local variation, procedures have been classified into the following groups:

  • Minor
  • Intermediate
  • Major
  • Major+/Complex

Overall triage process

When patients are added to the list of operations that are planned, the table below shows who should be referred to POAC. If the surgical consultant has other specific concerns then the patient can be referred at their discretion.

Surgical severity Action
Minor POAC not indicated
Intermediate POAC indicated if >60 years old
Major POAC indicated
Major+/Complex POAC indicated

Timing of assessments

Patients should be assessed at least seven days prior to their elective procedures. In the case of surgery that is for urgent indications this will not always be achievable.

An assessment at the POAC will remain valid for a period of six months, as long as there has been no material change in the medical status of the patient in that period.

References

1.
Lee TH, Marcantonio ER, Mangione CM, et al. Derivation and prospective validation of a simple index for prediction of cardiac risk of major noncardiac surgery. Circulation. 1999;100(10):10431049.
2.
Halvorsen S, Mehilli J, Cassese S, et al. 2022 ESC Guidelines on cardiovascular assessment and management of patients undergoing non-cardiac surgery. European Heart Journal. Published online August 26, 2022:ehac270. doi:10.1093/eurheartj/ehac270
3.
Smetana GW, Lawrence VA, Cornell JE. Preoperative pulmonary risk stratification for noncardiothoracic surgery: Systematic review for the american college of physicians. Annals of internal medicine. 2006;144(8):581595.
4.
Partridge JS, Harari D, Dhesi JK. Frailty in the older surgical patient: A review. Age and ageing. 2012;41(2):142147.
5.
Wong DJN, Harris S, Sahni A, et al. Developing and validating subjective and objective risk-assessment measures for predicting mortality after major surgery: An international prospective cohort study. PLOS Medicine. 2020;17(10):e1003253. doi:10.1371/journal.pmed.1003253