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Table 2 Characteristics of included studies

From: The impact of direct admission to a catheterisation lab/CCU in patients with ST-elevation myocardial infarction on the delay to reperfusion and early risk of death: results of a systematic review including meta-analysis

Study Design Duration Diagnostic criteria Intervention Number of participants Outcomes included in review
Carstensen et al. 2007[21] Prospective observational study 17 months ST elevation>= 1 mm in >=2 contiguous leads or suspected new LBBB. Direct admission to catheter lab. Intervention: N=108 - Symptom onset to balloon time
Control: N=193
- Door to balloon time
- Hospital mortality
Dorsch et al. 2008[22] Prospective observational study 14 months Non traumatic chest pain within last 12 hours. ST elevation in 2 adjacent leads (>1 m V in leads I-III, aVL, and aVF, and >2 mV in V1-V6 Direct admission to catheter lab. Intervention: N=172 - Door to balloon time
Control: N=215 - Call to balloon time
- 30 days mortality
Bång et al. 2008[23] Prospective observational study 66.5 months St elevation >= 1 mm in ECG leads I, II, III, AVF, V5 and V6 or >= 2mm in leads V1, V2, V3 and V4. Direct admission to ICCU or catheter lab. The review used the catheter lab groups data - Door- balloon time: Intervention N=115 control N=66 - Door-balloon time
- From onset of symptoms to balloon time
Symptoms - balloon time: Intervention N=115 control N=66
Grosgurin et al. 2010[24] Before and after 24 months St elevation >=1 mm in 2 or more contiguous limb leads or ST elevation >= 2 mm in 2 or more contiguous precordial leads, or new LBBB Direct admission to catheter lab. Intervention: N=119 - Door to balloon time
Control: N=77
Majumder et al. 2011[25] Retrospective observational study 31 months Suspicion of STEMI not specified Direct admission to catheter lab. Intervention: N=200 - Door to balloon time
Control: N=161 - Call to balloon time
Cheskes et al. 2011[26] Before and after 24 months ST elevation >1mm in at least 2 contiguous limb leads or 2 mm in at least 2 contiguous precordial leads or LBBB Direct admission to catheter lab. Intervention N=80 Control N=95 - EMS contact to balloon time
Bagai et al. 2013a[27] Retrospective observational study 42 months ST segment elevation >=1 mm in >= 2 contiguous ECG leads or LBBB or isolated posterior infarction Direct admission to catheter lab. Intervention N=1316 and control N=11265 - First medical contact to balloon time
- Hospital mortality
Bagai et al. 2013b[28] Retrospective observational study 18 months ST segment elevation >=1 mm in >= 2 contiguous ECG leads or LBBB or isolated posterior infarction Direct admission to catheter lab. Intervention N=286 and control N=1401 - First medical contact to balloon time
  1. In the included studies “door to balloon time” is defined as the time from first hospital door to balloon inflated. In this review “symptoms onset to balloon time” is equated to “first medical contact to balloon time”, “call to balloon time” and “EMS contact to balloon time”.
  2. Direct admission to catheter laboratory vs ED admission.