Safety and feasibility of deep sedation and general anaesthesia for cardiovascular MRI studies in paediatric patients from two tertiary European centres.

PURPOSE: To investigate the safety and feasibility of deep sedation and general anaesthesia for cardiovascular magnetic resonance imaging in paediatric patients with congenital or acquired cardiac diseases.

METHODS

This retrospective study included all consecutive patients less than 18 years of age who had deep sedation for cardiovascular magnetic resonance examination at the University Hospital Schleswig-Holstein (Kiel, Germany) between 2010 and 2020 and cardiovascular magnetic resonance examination under general anaesthesia at the Royal Brompton Hospital (London, United Kingdom) between 2013 and 2022.

RESULTS

Five-hundred twenty-two patients were in the deep sedation group and 171 in general anaesthesia group. Most of the patients had CHD (86% in deep sedation and 70% in general anaesthesia group). There were overall 14 adverse events (2%); 8 (1.5%) in the deep sedation group and 6 (3.5%) in the general anaesthesia group. This difference was not statistically significant (p = 0.122). Complications in the deep sedation group included mild anaphylactic reactions in three patients, a severe coughing fit in one patient, increasing cyanosis in three single-ventricle patients, and suspected aspiration in one patient. In the general anaesthesia group, hypotension requiring some intervention was present in three patients (four scans). One patient (0.6%) had inadvertent endobronchial intubation.

CONCLUSION

Both deep sedation and general anaesthesia can be used for cardiovascular magnetic resonance scans in paediatric patients with a low rate of complications. This, however, requires highly skilled teams who adhere strongly to the safety policies and guidelines set up by each hospital.