Table 1.

Patient characteristics of dialysis unit cardiac arrests according to bystander dialysis staff–initiated CPR

CharacteristicEMS/First Responder–Initiated CPR, n=74Bystander Dialysis Staff–Initiated CPR, n=324P Value
Demographics
 Mean age (SD)62.0 (13.7)64.6 (12.0)0.07
 Women42 of 74 (57)151 of 324 (46)0.12
 Race0.17
  White16 of 74 (22)103 of 324 (32)
  Black48 of 74 (65)184 of 324 (57)
  Other5 of 74 (7)10 of 324 (3)
  Missing data5 of 74 (7)27 of 324 (8)
Cardiac arrest characteristics
 Witnessed arrest54 of 74 (73)286 of 324 (88)0.00
 First monitored rhythm0.06a
  Nonshockable rhythm56 of 74 (76)208 of 324 (64)
   Asystole17 of 74 (23)50 of 324 (15)
   Idioventricular/PEA23 of 74 (31)82 of 324 (25)
   Unknown nonshockable rhythm16 of 74 (22)76 of 324 (23)
   Missing data0 of 74 (0)1 of 324 (0)
  Shockable rhythm total, %18 of 74 (24)116 of 324 (36)
   Ventricular fibrillation10 of 74 (14)43 of 324 (13)
   Ventricular tachycardia1 of 74 (1)3 of 324 (1)
   Unknown shockable rhythm7 of 74 (9)69 of 324 (22)
CPR characteristics
 AED first applied by<0.001
  EMS/first responder61 of 74 (82)127 of 324 (39)
  Dialysis staff bystander13 of 74 (18)195 of 324 (60)
  Missing data0 of 74 (0)2 of 324 (1)
 AED shock delivered34 of 74 (46)151 of 324 (47)0.45
  Missing data0 of 74 (0)1 of 324 (0)
 First AED shock delivered by<0.001
  EMS/first responder27 of 74 (36)58 of 324 (18)
  HD staff5 of 74 (7)83 of 324 (26)
  Missing data2 of 74 (3)10 of 324 (3)
Dialysis clinic characteristics
 Dialysis ownership0.30
  Nonprofit nonchain2 of 74 (3)7 of 324 (2)
  Nonprofit chain2 of 74 (3)28 of 324 (9)
  Profit nonchain3 of 74 (4)18 of 324 (6)
  Profit chain67 of 74 (91)271 of 324 (83)
 Clinic Medicare star rating0.29
  1–28 of 74 (11)55 of 324 (17)
  335 of 74 (47)164 of 324 (51)
  4–528 of 74 (38)100 of 324 (31)
  Missing data3 of 74 (4)5 of 324 (2)
 Clinic location
  Atlanta metropolitan area42 of 74 (57)106 of 324 (33)<0.001
  NC32 of 74 (43)218 of 324 (67)
  Mean number of dialysis chairs (SD)22.0 (7.0)27.3 (10.9)<0.001
Cardiac arrest outcomes
 Return of spontaneous circulation28 of 74 (38)166 of 324 (51)0.04
  Missing data0 of 74 (0)0 of 324 (0)
 Survival to hospital admission29 of 74 (39)164 of 324 (51)0.06
  Missing data0 of 74 (0)5 of 325 (2)
 Overall survival to hospital discharge10 of 74 (14)94 of 324 (29)<0.01
  Missing data0 of 74 (0)5 of 324 (2)
 Cerebral performance category score >2 at discharge8 of 74 (11)78 of 324 (24)0.01
  Missing data0 of 74 (0)3 of 324 (1)
  • Data are provided as n (%), except where indicated otherwise. PEA, pulseless electrical activity; HD, hemodialysis; NC, North Carolina.

  • a P value is for comparison of shockable versus nonshockable rhythms.