Table 3.
Patients' demographics and baseline characteristics by sPi concentration.
| Characteristics |
Lower serum Phosphorus
(≤1.00mmol/L) |
Higher serum Phosphorus
(>1.00mmol/L) |
Univariate
P-value |
|---|---|---|---|
| Number of patients | 312 | 323 | |
| aHCP (N,%) | 84 (26.9) | 39 (12.1) | <0.001 |
| Age, mean ± SD, yrs | 54.67 ± 10.38 | 53.86 ± 11.13 | 0.342 |
| Gender (N, %) | 0.083 | ||
| Male | 126 (40.4) | 109 (33.7) | |
| Female | 186 (59.6) | 214 (66.3) | |
| Medical history | |||
| Smoking (N, %) | 54 (17.3) | 49 (15.2) | 0.465 |
| Alcohol (N, %) | 36 (11.5) | 31 (9.6) | 0.426 |
| Hypertension (N, %) | 157 (50.3) | 178 (55.1) | 0.227 |
| Diabetes mellitus (N, %) | 33 (10.6) | 33 (10.2) | 0.882 |
| Hyperlipidemia (N, %) | 48 (15.4) | 60 (18.6) | 0.285 |
| Admission vital signs | |||
| SAP, mean ± SD, mmHg | 145.23 ± 26.74 | 138.79 ± 13.55 | 0.001 |
| DBP, mean ± SD, mmHg | 84.61 ± 14.78 | 84.20 ± 13.29 | 0.709 |
| Hunt-Hess grade (N, %) | <0.001 | ||
| Grade I-III | 246 (78.8) | 293 (90.7) | |
| Grade IV, V | 66 (21.2) | 30 (9.3) | |
| mFisher grade (N, %) | <0.001 | ||
| Grade 0-2 | 146 (46.8) | 230 (71.2) | |
| Grade 3-4 | 166 (53.2) | 93 (28.8) | |
| Aneurysm characteristics | |||
| Multiple aneurysms (N, %) | 45 (14.4) | 37 (11.5) | 0.265 |
| Single aneurysms location (N,%) | 0.074 | ||
| ACA | 9 (3.4) | 23 (8.0) | |
| AcoA | 77 (28.8) | 79 (27.6) | |
| ICA | 36 (13.5) | 53 (18.5) | |
| MCA | 63 (23.6) | 51 (17.8) | |
| PcoA | 66 (24.7) | 64 (22.4) | |
| Others | 16 (6.0) | 16 (5.6) | |
| Time from onset to admission, IQR, h | 14.0 (8.0–18.0) | 15.0 (10.0–17.0) | 0.949 |
| Admission laboratory | |||
| Serum potassium, IQR, mmol/L | 3.83 (3.56–4.10) | 4.05 (3.74-4.33) | <0.001 |
| Serum sodium, IQR, mmol/L | 140.45 (137.60–142.80) | 141.0 (139.0–143) | 0.038 |
| Serum calcium, IQR, mmol/L | 2.13 (2.04–2.21) | 2.22 (2.14–2.30) | <0.001 |
| Treatment (N, %) | 0.053 | ||
| Clipping | 226 (72.4) | 211 (65.3) | |
| Coiling | 86 (27.6) | 112 (34.7) | |
| mRS (N, %) | 0.015 | ||
| 0–2 | 259 (83) | 290 (89.8) | |
| 3–6 | 53 (17) | 33 (10.2) |
ACA, anterior cerebral artery; ACoA, anterior communicating artery; aSAH, aneurysmal subarachnoid hemorrhage; aHCP, acute hydrocephalus; CI, confidence interval; DBP, diastolic blood pressure; ICA, internal carotid artery; IQR, interquartile range; MCA, middle cerebral artery; mFisher, modified Fisher; mRS, modified Rankin Scale; OR, odds ratios; PcoA, posterior communicating artery; sPi, serum phosphate ion; SD, standard deviation; SBP, systolic blood pressure.