OBJECTIVE: To determine the sonographic appearances in pregnant @entity1 who presented with @entity3556 in the first 20 weeks of gestation. METHOD: Pregnant @entity1 of under 20 gestational weeks diagnosed clinically as threatened @entity5852 were recruited for ultrasound scan at the Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, Faculty of Medicine, Chulalongkorn University. The sonographic findings were reported as viable pregnancy, @entity2099 , @entity204 , incomplete @entity5852 , @entity5849 and inconclusive findings. @entity1 with inconclusive findings were followed weekly until final diagnoses were established. All @entity1 were followed-up to 20 weeks or until the final outcomes were revealed. RESULTS: Two hundred and sixty eight pregnant @entity1 were enrolled. Ultrasound scans demonstrated 100 viable fetuses (37.3%), 73 @entity204 (27.3%), 46 anembryonic pregnancies (17.2%), 6 @entity1475 (2.2%), 3 ectopic pregnancies (1.1%), 14 complete @entity5852 (5.2%) and 26 inconclusive findings (9.7%). Follow-up scan on @entity1 with inconclusive findings revealed 9 anembryonic pregnancies (3.3%), 9 incomplete @entity5852 (3.3%), 1 @entity204 (0.4%) and 1 viable pregnancy (0.4%). Six @entity1 (2.3%) were lost to follow-up. The viable pregnancy rate according to maternal age was highest at the maternal age of 25 to 29 years old (49%), whereas, it was lowest at the maternal age of 40 to 44 years old (0%). The viable pregnancy rate according to gestational age was highest at 6 to 8 weeks (61.2%), whereas, it was lowest at 18 to 20 weeks (20%). CONCLUSION: Sonographic findings in @entity1 with clinically diagnosed threatened @entity5852 demonstrated viable pregnancies in around one-third of the cases. Use of ultrasound in clinically diagnosed threatened @entity5852 may assist clinicians in establishing a definite diagnosis so that appropriate care could be offered to the @entity1 .

Sonographic findings in clinically diagnosed threatened XXXX .

@entity1 :: ('9606', 'Species') :: ['women', 'Patients', 'patients'] @entity3556 :: ('MESH:D014592', 'Disease') :: ['vaginal bleeding'] @entity5852 :: ('MESH:D000031', 'Disease') :: ['abortion', 'abortions', 'abortion, complete abortion'] @entity2099 :: ('MESH:D011254', 'Disease') :: ['anembryonic pregnancy'] @entity1475 :: ('MESH:D006828', 'Disease') :: ['molar pregnancies'] @entity5849 :: ('MESH:D011271', 'Disease') :: ['ectopic pregnancy, molar pregnancy'] @entity204 :: ('MESH:D003643', 'Disease') :: ['embryonic death', 'embryonic deaths']
@entity5852 :: (MESH:D000031,Disease) :: ['abortion']
