Detecting myocardial infarction in critical illness using screening troponin measurements and ECG recordings

Table 4 Clinical complications

	MI, N (%) (N = 37)	Elevated cTn, N (%) (N = 15)	No cTn elevation, N (%) (N = 51)	p value¹	p value²
Arrhythmia requiring treatment	1 (2.7)	0 (0)	1 (1.8)	0.846	- MI vs cTn, p = 1.000 - cTn vs no cTn elevation, p = 1.000 - MI vs no cTn elevation, p = 1.000
Pulmonary oedema	14 (37.8)	3 (20.0)	6 (11.8)	0.015	- MI vs cTn, p = 0.330 - cTn vs no cTn elevation, p = 0.414 - MI vs no cTn elevation, p = 0.005
Non-fatal cardiac arrest	2 (5.4)	0 (0)	0 (0)	0.162	- MI vs cTn, p = 1.000 - cTn vs no cTn elevation, p = NE - MI vs no cTn elevation, p = 0.174
Cardiogenic shock	2 (5.4)	0 (0)	0 (0)	0.162	- MI vs cTn, p = 1.000 - cTn vs no cTn elevation, p = NE - MI vs no cTn elevation, p = 0.174

cTn = cardiac troponin; MI = myocardial infarction; NE = not estimable; ¹p value indicates a three-way comparison; ²p value indicates a two-way comparison; note that two patients had more than one MI, so the totals exceeds 100 per cent.

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