Table 1.
Patient and Arrest Level Characteristics of IHCA Events by Hospital Locations
| ICU, % (n) | Inpatient Ward, % (n) | P‐Value | |
|---|---|---|---|
| All patients | 59 (50 514) | 41 (34 687) | |
| Patient demographics | |||
| Age, mean y (SD) | 64 (16) | 69 (14) | <0.0001 |
| Male | 59 (29 583) | 58 (19 980) | <0.0001 |
| Race | |||
| White | 68 (34 569) | 70 (24 238) | <0.0001 |
| Black | 20 (10 320) | 21 (7301) | |
| Other | 11 (5625) | 9 (3148) | |
| Existing conditions | |||
| Neurologic | 26 (13 253) | 24 (8488) | <0.0001 |
| Cardiac | 75 (38 032) | 76 (26 303) | <0.0001 |
| Pulmonary | 68 (34 449) | 33 (11 562) | <0.0001 |
| Renal insufficiency | 39 (19 536) | 33 (11 548) | <0.0001 |
| Hepatic insufficiency | 10 (5150) | 6 (2229) | <0.0001 |
| Diabetes mellitus | 30 (15 228) | 34 (11 920) | <0.0001 |
| Metabolic abnormalities | 22 (11 045) | 13 (4532) | <0.0001 |
| Hypotension | 39 (19 528) | 15 (5141) | <0.0001 |
| Septicemia | 22 (11 292) | 13 (4408) | <0.0001 |
| Malignancy | 12 (6155) | 15 (5290) | <0.0001 |
| Major trauma | 5 (2543) | 2 (634) | <0.0001 |
| Arrest characteristics | |||
| Initial rhythm | |||
| Asystole | 33 (16 493) | 43 (15 025) | <0.0001 |
| PEA | 47 (23 611) | 40 (13 707) | |
| VT/VF | 21 (10 410) | 17 (5955) | |
| Cause of arrest | |||
| Cardiac | 69 (34 920) | 59 (20 379) | <0.0001 |
| Respiratory | 39 (19 929) | 46 (15 924) | <0.0001 |
| Neurologic | 1 (551) | 1 (346) | 0.0288 |
| Metabolic | 57 (28 567) | 31 (10 670) | <0.0001 |
ICU indicates intensive care unit; IHCA, in‐hospital cardiac arrest; PEA, pulseless electrical activity; VT/VF, ventricular tachycardia/ventricular fibrillation.