Table 2. Test results of the study cohorts.

	Reference cohort (n = 10)	Test cohort (n = 90)	All patients (n = 100)
CXR position correct	8 (80%)	80 (88.9%)	88 (88%)	p = 0.7583
Echocardiography
Flush immediate	7 (70%)	76 (84.4%)	83 (83%)	p = 0.3265
Flush delayed	1 (10%)	8 (8.9%)	9 (9%)
Flush absent	2 (20%)	6 (6.7%)	8 (8%)
Echocardiography position
4CV	4 (40%)	11* (12.2%)	15* (15%)	p = 0.0591
SV	6 /60%)	80 (88.8%)	86 (86%)

*in one patient, both views were required to obtain a result

Abbreviations used: 4CV: four chamber view; CXR: chest radiography; SV: subcostal view.