Laboratory Findings
Laboratory findings were shown in Table 2 . During hospitalization, leucocytes counts, neutrophil counts and C-reactive protein were higher (median leucocytes counts, 8.0 × 10⁹/L [IQR 6.5, 11.4]; median neutrophil counts, 6.2 × 10⁹/L [IQR 4.7, 8.7]; median C-reactive protein level, 17.7 mg/L [IQR 3.5, 27.3]), while lymphocyte counts were lower (median lymphocyte counts, 1.3 × 10⁹/L [IQR 1.1, 1.6]) in pregnant patients than non-pregnant cases (median leucocytes counts, 5.6 × 10⁹/L [IQR 4.6, 6.4], P < 0.001; median neutrophil counts, 3.1 × 10⁹/L [IQR 2.5, 3.9], P < 0.001; median lymphocyte counts, 1.8 × 10⁹/L [IQR 1.4, 2.1], P < 0.001; median C-reactive protein level, 0.5 mg/L [IQR 0.5, 0.5], P < 0.001). There was a trend of a more obvious fall in hemoglobin level in pregnant women (median hemoglobin level, 117 g/L [IQR 105.0, 122.0]) compared with that in contrast cases (median hemoglobin level, 126 g/L [IQR 117.0, 132.3], P < 0.001). Levels of lactate dehydrogenase were increased in 11 (7.9%) of 140 patients, including 4 of 28 (14.3%) pregnant women and 7 of 112 (6.3%) non-pregnant women. There was no statistical difference in the level of alanine aminotransferase and aspartate aminotransferase between the two groups. Hypersensitive troponin I located in the normal range in pregnant patients. All the 155 patients had chest CT scan, 109 (70.3%) had bilateral involvement of patchy shadows or ground glass opacity. No significant difference of abnormalities presentation pattern of CT images could be observed between these two groups.