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Table 2 Major therapeutic characteristics of ICCU admission

From: Association of fine particulate matter exposure with acute noncardiovascular critical illnesses and in-hospital outcomes in patients receiving intensive cardiac care

 The 2-day average concentration of PM2.5 before ICCU admission 
Characteristic≤36 μg/m337-63 μg/m3≥64 μg/m3P value
(N = 804)(N = 773)(N = 760)
Percutaneous coronary intervention446(55.5)462(59.8)433(57.0)0.531
Temporary pacemaker78(9.7)72(9.3)60(7.9)0.214
Conventional pacemaker46(5.7)41(5.3)24(3.2)0.018
Ablation for tachycardia43(5.3)20(2.6)25(3.3)0.030
LAA closure16(2.0)2(0.3)13(1.7)0.593
TAVI or BAV18(2.2)10(1.3)23(3.0)0.302
Interventional therapy for CHD6(0.7)8(1.0)5(0.7)0.856
Intra-aortic balloon pump28(3.5)32(4.1)27(3.6)0.932
Inotropes or vasopressors90(11.2)115(14.9)107(14.1)0.089
Arterial line111(13.8)128(16.6)168(22.1)< 0.001
Central venous catheter66(8.2)74(9.6)87(11.4)0.031
Mechanical ventilation87(10.8)104(13.5)125(16.4)0.001
  1. Data are expressed as counts and percentage
  2. Abbreviation: PM2.5 particulate matter with an aerodynamic diameter less than 2.5 μm, ICD implantable cardioverter defibrillator, CRT-P/D cardiac resynchronization therapy and pacemaker or defibrillator, LAA closure left atrial appendage closure, TAVI transcatheter aortic implantation, BAV balloon aortic valvuloplasty, CHD congenital heart disease