Table 2 Data sources and definitions used for identifying changes in management up to 12 months after the index admission
Important change in management resulting from CMRa | Patient subgroup | Data source | ICD-10 diagnosis codes and OPCS procedure codes (up to 12 months after the index admission) |
|---|---|---|---|
New diagnosis (non-ischaemic) | Unobstructed coronary arteries OHCA | HES / PEDW admitted patient care data | Any record of the following: − Takotsubo cardiomyopathy (I42.8 AND F43.8) − Myocarditis (I51.4) − Pericarditis (I30 OR I31.0 OR I31.1 OR I31.9 OR I32.0 OR I32.1 OR I32.8 OR I01.0 OR I02.0 OR I09.2) − Endocarditis (I33.9) − Coronary spasm (I20.1) |
Changes in medication | PPCI MVD LV thrombus after PPCI Unobstructed coronary arteries OHCA | Not available | Not available |
Additional diagnostic tests | PPCI MVD LV thrombus after PPCI Unobstructed coronary arteries OHCA | HES / PEDW admitted patient care data and outpatient care data | Any record of the following: − Echocardiography (K58.5 OR U20.1 OR U20.2 OR U20.3 OR U20.4 OR U20.5) − Single photon emission computed tomography (SPECT) (U21.4) − Positron emission tomography (PET) scans (U10.4 OR U21.3 OR U36.2) − Intravascular ultrasound (IVUS) (K51.2 OR L726) − Pressure wire ((K63.4 OR K63.5 OR K63.6) AND K51.8 AND Y44.2 AND Y53) − Radionuclide angiocardiography (U10.5) − Computed tomography angiography (U10.2) |
Implantation of devices | PPCI OHCA | HES / PEDW admitted patient care data | Any record of the following: − Cardiac resynchronization therapy (CRT) (K60.7 OR K61.7 OR K59.6) − Implantable cardioverter defibrillator (ICD) (K59 OR K72) |
Revascularisation (PCI or CABG) within 3 months | MVD | HES / PEDW admitted patient care data | Any record of the following (up to 3 months after the index admission): − PCI (K49 OR K50 OR K75) − CABG (K40 OR K41 OR K42 OR K43 OR K44 OR K45 OR K46) |
Frequency of cardiology outpatient appointments | PPCI MVD LV thrombus after PPCI Unobstructed coronary arteries OHCA | HES / PEDW outpatient care data | Rate of outpatient visit attended (count of visits divided by follow-up time) where the treatment speciality in which the consultant responsible was working during the period of care was Cardiology (code = 320). |