Impact of the Canadian CT head rule supplemented by the original published minimum inclusion criteria to assist emergency department clinicians’ assessment of patients presenting post fall from residential aged care: a retrospective audit

Table 2 Comparison of pre- and post-intervention outcomes

	2018		2019
	(N = 233)	%	(N = 241)	%	Difference	p-value
ED CTB performed	134	57.0%	90	37.3%	19.7%	< 0.01**
Confirmed ICH on ED CTB	5 / 134	3.7%	5 / 90	5.6%	1.9%	0.52
Chemical restraint used in ED CTB	4 / 134	3.0%	2 / 90	2.2%	0.8%	1.0
Physical restraint used in ED CTB	0 / 134	0.0%	0 / 90	0.0%	0.0%	–
Missed presentation**	1	0.4%	2	0.8%	−0.4%	1.0
Ward CTB performed	14/79	17.7%	13/69	18.8%	−1.1%	0.86
Abnormal ward CTB	3 / 14	21.4%	3 / 13	23.1%	−2.3%	1.0
ICH on ward CTB	1 / 14	7.1%	2 / 13	15.4%	−8.3%	0.60
Neurosurgical intervention	0 / 134	0.0%	0 / 90	0.0%	0.0%	–

ED Emergency Department, CTB Computed tomography of the brain, ICH Intracranial haemorrhage, Ward CTB = CTBs subsequently performed on patients who were admitted to the ward from ED
** ‘Missed presentation’: patients who represented with an intracranial haemorrhage not diagnosed on the initial fall presentation. This was captured by reviewing two weeks of medical records following the index presentation

ISSN: 1471-2318