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Table 3 Timing of CA contrasting NSTEMI patients with final diagnosis after the first versus the second cTn control

From: How rapid is rapid? Exemplary results of real-life rapid rule-out troponin timing in troponin-positive acute coronary syndromes without persistent ST-segment elevation in two contrasting German chest pain unit facilities

Time of CA

Overall

Site I

Site II

p value

NSTEMI ensured by the 1st control (h)

 Overall

20.5 h (11.6–45.3 h)

22.0 h (12.3–46.5 h)

20.0 h (10.8–43.5 h)

0.55

 Group (a)

22.0 h (11.0–49.8 h)

23.5 h (12.1–51.1 h)

20.0 h (10.0–40.5 h)

0.35

 Group (b)

15.0 h (7.0–53.8 h)

NA

15.0 h (7.0–53.8 h)

NA

 Group (c)

21.0 h (13.5–35.0 h)

21.0 h (13.0–30.0 h)

21.3 h (15.0–63.9 h)

0.75

NSTEMI ensured by the 2nd control (h)

 Overall

22.3 h (20.5–28.9)

10.0 h; 27.0 h

22.3 h (20.5–28.9 h)

Omitted to due remaining small sample size

 Group (a)

20.0 h (15.5–22.0 h)

10.0 h

21.0 h (18.9–38.5 h)

 Group (b)

22.5 h; 31.0 h

NA

22.5 h; 31.0 h

 Group (c)

27.0 h

  1. site I centre of maximum care in an urban university setting (University Hospital Münster); site II centre of primary care in a rural regional setting (Arnsberg Medical Center)
  2. subgroups: a–c myocardial infarction without persistent ST-segment elevation (NSTEMI), CA coronary angiography, cTn cardiac troponin
  3. * Statistically significant