Table 6.
Interventions and Notable Sequelae in Fatal and Nonfatal Cases of Rocky Mountain Spotted Fever in 2 Tribal Communities in Eastern Arizona
| Intervention | Nonfatal, No. (%) | Fatal, No. (%) | RR | 95% CI |
|---|---|---|---|---|
| ICU admission | 16/189 (8.5) | 13/15 (86.7) | 39.22 | 9.33–164.88 |
| Plasma transfusion | 4/186 (2.2) | 9/13 (69.2) | 32.19 | 11.44–90.62 |
| Platelet transfusion | 5/186 (2.7) | 10/12 (83.3) | 61 | 14.69–253.38 |
| PRBC transfusion | 5/185 (2.7) | 6/12 (50.0) | 16.91 | 6.51–43.91 |
| Whole blood transfusion | 4/186 (2.2) | 1/12 (8.3) | 3.51 | .55–22.20 |
| Fluid boluses | 77/186 (41.4) | 14/14 (100) | Undefined | Undefined |
| Ventilation | 6/189 (3.2) | 15/15 (100) | Undefined | Undefined |
| Inotropic support | 7/189 (3.7) | 15/15 (100) | Undefined | Undefined |
| Immunoglobulins | 0/184 (0) | 1/12 (8.3) | 17.73 | 9.98–31.47 |
| ARDS | 5/189 (2.6) | 8/15 (53.3) | 16.79 | 7.22–39.07 |
| Respiratory failure | 7/189 (3.7) | 15/15 (100) | Undefined | Undefined |
| DIC | 5/189 (2.6) | 13/15 (86.7) | 67.17 | 16.43–274.54 |
| Multisystem organ failure | 2/189 (1.1) | 12/15 (80.0) | 54.29 | 17.31–170.22 |
| Renal insufficiency | 7/189 (3.7) | 10/14 (71.4) | 27.35 | 9.59–78.00 |
| Coma | 2/188 (1.1) | 9/15 (60) | 26.18 | 11.36–60.37 |
| Digital necrosis | 1/186 (0.5) | 2/15 (13.3) | 10.15 | 3.90–26.45 |
Abbreviations: ARDS, acute respiratory distress syndrome; CI, confidence interval; DIC, disseminated intravascular coagulation; ICU, intensive care unit; PRBC, packed red blood cell; RR, risk ratio.