Table 1.
Characteristics of geriatric emergency department patients with influenza.
| Characteristics | Total patients (n = 409) |
|---|---|
| Age, yr | 79.5 ± 8.3 |
| Age subgroup | |
| Young elderly (65–74 yr) | 30.6 |
| Moderately elderly (75–84 yr) | 42.5 |
| Old elderly (≥85 yr) | 26.9 |
| Male sex | 50.1 |
| Vital signs | |
| GCS | 13.9 ± 2.32 |
| Severe coma (GCS ≤8) | 5.1 |
| SBP (mmHg) | 146.1 ± 30.5 |
| Hypotension (SBP <90 mmHg) | 3.4 |
| Heart rate (beats/min) | 98.8 ± 20.5 |
| Respiratory rate (breaths/min) | 21.2 ± 4.1 |
| Tachypnea (respiratory rate >20) | 37.1 |
| Tympanic temperature (°C) | 38.1 ± 0.9 |
| Past history | |
| Hypertension | 64.3 |
| Diabetes | 39.8 |
| Chronic obstructive pulmonary disease | 27.1 |
| Coronary artery disease | 25.1 |
| Bedridden | 16.3 |
| Stroke | 15.8 |
| Cancer | 14.9 |
| Congestive heart failure | 9.0 |
| Feeding with nasogastric tube | 6.6 |
| Nursing home resident | 4.4 |
| Dementia | 2.2 |
| Laboratory data | |
| WBC (cells/mm3) | 10,590.0 ± 5820.0 |
| Leukocytosis (WBC >12,000 cells/mm3) | 43.5 |
| Bandemia (band form >10%) | 10.2 |
| Hemoglobin (mg/dL) | 12.1 ± 2.1 |
| Anemia (hemoglobin <12 mg/dL) | 17.1 |
| Platelet (103/mm3) | 186.2 ± 158.8 |
| Thrombocytopenia (platelet count <150 × 103/mm3) | 0.73 |
| Serum creatinine (mg/dL) | 1.6 ± 1.4 |
| Renal impairment (serum creatinine >2 mg/dL) | 17.8 |
| CRP (mg/dL) | 8.2 ± 10.1 |
| Elevated CRP (>10 mg/dL) | 32.2 |
| Influenza subtypes | |
| Influenza A | 68.0 |
| Influenza B | 29.3 |
| Influenza A + B | 2.7 |
| Influenza vaccination | 23.2 |
| Complications* | |
| Pneumonia | 67.5 |
| Urinary tract infection | 18.1 |
| Sepsis | 8.3 |
| Admission rate† | 83.9 |
| 30-day mortality rate | 4.9 |
Data were presented as % or Mean ± SD. ED, Emergency Department; SD, standard deviation; GCS, Glasgow coma scale; SBP, systolic blood pressure; WBC, white blood cell count; CRP, C-reactive protein.
*Not all the complications are listed in the table.
†Admission to general ward or intensive care unit.