最後更新：2026年10月1日
僅懷單一胎兒之妊娠。胎兒易過度生長，且缺乏多胎機械性刺激可能導致產程延遲。難產風險高，常需剖腹產。
Early spaying (before first estrus) reduces mammary carcinoma risk by > 90% in cats. Feline mammary tumors are highly malignant; radical mastectomy with wide margins is recommended. Cryptorchidism is less common in cats than dogs but still warrants surgical intervention.
小型犬、初產或高齡母犬較常見
建議：LRS 維持量 + 矯正脫水（pyometra/dystocia 常有脫水）
類型：LRS
監測頻率：每日（術後）
[1]Performance of expanded non-invasive prenatal testing for fetal aneuploidies and copy number variations: A prospective study from a single center in Jiangxi province, China.
[2]Birth tears after spontaneous and vacuum-assisted births with different vacuum cup systems - a retrospective cohort study.
穩定但需注意惡化徵兆，建議安排近期門診 (stable but monitor for deterioration, schedule near-term visit)
及時剖腹產預後良好。過期妊娠可能胎兒窘迫或死亡、母體併發症。
單胎妊娠 診斷流程
詳細問診包括發病經過、用藥史、飲食與環境
CBC、生化全套、尿液分析
來源：自動產生