Table 1.
Patient characteristics
| Echo (n = 198) | No echo (n =2418) | Pa | |
|---|---|---|---|
| Demographics | |||
| Age (y) | 60 ± 17 | 51 ± 18 | <.05 |
| Male | 83 (42) | 716 (30) | <.05 |
| BMI (kg/m2) | 30 ± 9 | 30 ± 9 | .439 |
| Ethnicity | |||
| White | 117 (59) | 1362 (57) | .45 |
| Black | 68 (34) | 853 (35) | .791 |
| Other | 13 (7) | 203 (8) | .368 |
| Vital signs | |||
| Highest heart rate (beats/min) | 103 ± 26 | 94 ± 22 | <.05 |
| Systolic blood pressure (mm Hg) | 128 ± 28 | 132 ± 25 | .058 |
| Respiratory rate (breaths/min) | 23 ± 6 | 22 ± 5 | <.05 |
| Oxygen saturation (%) | 94 ± 6 | 96 ± 4 | <.05 |
| Temperature (°F) | 98 ± 1 | 98 ± 1 | .379 |
| Associated symptoms | |||
| Wheezing | 36 (18) | 345 (14) | .795 |
| Chest pain at rest | 49 (25) | 1134 (47) | <.05 |
| Prior visit for same symptoms | 64 (32) | 563 (23) | .268 |
| Comorbidities | |||
| Chronic lung disease | 60 (30) | 637 (26) | .867 |
| Tobacco use | 84 (42) | 899 (37) | .142 |
| Hematologic disease | 2 (1) | 54 (2) | |
| CHF | 16 (8) | 53 (2) | <.05 |
| Hypertension | 117 (59) | 940 (39) | <.05 |
| CAD | 46 (23) | 267 (11) | <.05 |
| Connective tissue disease | 7 (4) | 107 (4) | .555 |
| PE or DVT | 27 (14) | 331 (14) | .285 |
| CKD on HD | 7 (4) | 28 (1) | <.05 |
| Diabetes | 55 (28) | 330 (14) | <.05 |
| CVA | 19 (10) | 96 (4) | <.05 |
| Anxiety | 17 (9) | 274 (11) | .237 |
| Malignancy | 35 (18) | 378 (16) | .448 |
| Disposition | |||
| ICU | 19 (10) | 48 (2) | <.05 |
| Telemetry bed | 121 (62) | 633 (26) | <.05 |
| Unmonitored bed | 35 (18) | 325 (13) | .096 |
| Observation | 8 (4) | 270 (11) | .002 |
| Discharge | 12 (6) | 1142 (48) | <.05 |
Data presented as number (percent) and mean ± SD. Bold numbers are values reaching statistical significance (P < .05).
Abbreviations: BMI, body mass index; CAD, coronary artery disease; CHF, congestive heart failure; Chronic lung disease, chronic obstructive pulmonary disease, asthma, and interstitial lung disease; CKD, chronic kidney disease; CVA, cerebrovascular disease; DVT, deep venous thrombosis; HD, hemodialysis.
a
P values from unpaired t test or χ2 test.