Dear Colleagues

I have collated all the responses into the attached document 

If there are any more responses regarding definition of HAT then I shall update the document 

definition of HAT.pdf

Edited 12 November, 202512 Nov by sue bacon

Apologies I did not reply on time.

Our HAT definition is:

any new episode of VTE diagnosed during hospitalisation or within 90 days of discharge following an inpatient stay of at least 24 hours or a day case surgical procedure or an ambulatory lower limb injury with immobilisation.

Then the VTE must be diagnosed >24h after admission. If diagnosed in the first 24h or if there were high suspicion that the patient already had symptoms on admission - then is not hospital acquired.

I attach our HAT investigation template with our traffic light system

Green - not potentially preventable

Yellow: potentially preventable

Red: potentially preventable for consideration for a PSII learning response 

You can find out criteria to determine if its a green/yellow/red in the HAT form attached

Thank you Sue

HAT form revised PSIRF.docx