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. 2023 Apr 4:1–5. Online ahead of print. doi: 10.1007/s00586-023-07688-3

Table 2.

Comparison of the laboratory indices and physiologic parameters of patients before and during the COVID-19 pandemic

Variable Before COVID-19 (n = 211) After COVID-19 (n = 294) P-value
Hemoglobin (g/dl) 10.9 ± 1.5 11.2 ± 1.6 0.05
PT (second) 13 ± 0.37 13.7 ± 1.5  < 0.001
PTT (second) 30.5 ± 4.5 34.4 ± 8.4  < 0.001
INR 1.01 ± 0.4 1.09 ± 0.19  < 0.001
Platelet (109/L) 217 ± 62 205 ± 80 0.07
Respiratory rate of first 24 h (breath per min) 19 ± 1.2 20 ± 7.3 0.03
Pulse rate of first 24 h (number per min) 89.2 ± 13.9 88.9 ± 14.9 0.84
SBP first 24 h (mmHg) 118 ± 11 118 ± 15 0.91
DBP first 24 h (mmHg) 72 ± 8 72 ± 9 0.89
O2Sat (%) 96.2 ± 1.5 95.9 ± 1.5 0.06
Postoperative bleeding of first 24 h (ml) 198.1 ± 223 272 ± 297 0.002

BMI Body mass index, AIS Adolescent Idiopathic Scoliosis, ASF Anterior Spinal Fusion; PSF, Posterior Spinal Fusion; PT Prothrombin Time, PTT Partial Thromboplastin Time, INR International Normalized Ratio, SBP Systolic Blood Pressure, DBP Diastolic Blood Pressure, O2Sat Oxygen Saturation

Data are presented as mean ± SD or number (%)

P < 0.05 is considered significant