An audit of the establishment of a cardiac magnetic resonance imaging service in a public tertiary hospital setting in the Western Cape Province of South Africa.

Abstract

Introduction: cardiovascular magnetic resonance imaging is considered the standard of care for many clinical cardiovascular applications. Magnetic resonance imaging is a scarce resource in sub-Saharan Africa, with a paucity of cardiac magnetic resonance imaging clinical services and research. The aim of this audit was to review the cardiac magnetic resonance imaging service provided at a public tertiary hospital in Cape Town, Western Cape Province, South Africa.

Methods: a retrospective, descriptive audit via quantitative record review of Tygerberg Hospital´s cardiovascular magnetic resonance imaging service was conducted from the inception thereof on 1^st April 2015 up to 31^st October 2022.

Results: a total of 1,403 cardiovascular magnetic resonance imaging scans met the inclusion criteria. The mean age of the study population was 43 years, and 52% were female. The most common patient comorbidities were modifiable cardiovascular risk factors, including hypertension (22%; n=306), cigarette smoking (9.6%; n=134), diabetes mellitus type II (6.7%; n=94) and dyslipidaemia (4.4%; n=62). Sixty-three percent (n=888) of scans were performed after hours. In 93% of scans, intravenous gadolinium-based contrast agents were administered. Nonischaemic cardiomyopathy dominated the indications (56.7%; n=976) and final diagnosis (42%; n=589). The most common incidental extracardiac finding was hilar or mediastinal lymphadenopathy (6%; n=82).

Conclusion: the recently established, functional cardiovascular magnetic resonance imaging service at Tygerberg Hospital serves a unique patient population with a comparatively differently distributed cardiac disease spectrum, contributing to research diversity.