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Second Trimester Pregnancy
100 Questions

Click any button to open Claude or ChatGPT with the question pre-loaded — tailored for patients or clinicians, with instructions to cite peer-reviewed sources only.

Developed by Amos Grünebaum, MD · Maternal-Fetal Medicine
Important: AI may occasionally generate inaccurate citations. Always verify references independently before clinical use. This tool instructs the AI to cite only peer-reviewed journals or major guidelines (ACOG, SMFM, CDC, NIH, WHO).
1
Normal Second Trimester Development
10 questions
1
What happens developmentally in the second trimester week by week?
2
When can fetal sex be determined by ultrasound?
3
What is quickening and when does it occur?
4
How much does the fetus weigh at 20 weeks?
5
What is the limit of viability and what does the evidence show?
6
How does the placenta function in the second trimester?
7
What fetal movements are normal in the second trimester?
8
How does the uterus grow during the second trimester?
9
What is fundal height and how is it measured?
10
What is the role of amniotic fluid in the second trimester?
2
Anatomy Ultrasound and Fetal Surveillance
10 questions
11
What is the anatomy ultrasound and when is it performed?
12
What structures are evaluated on the 20-week anatomy scan?
13
What are soft markers on ultrasound and what do they mean?
14
What is an echogenic intracardiac focus and should parents be concerned?
15
What is a choroid plexus cyst and what does it indicate?
16
What is fetal growth restriction and how is it detected in the second trimester?
17
What is a biophysical profile and when is it used?
18
What is Doppler velocimetry and when is it indicated?
19
What findings on anatomy ultrasound require referral to MFM?
20
What is the difference between a level 1 and level 2 ultrasound?
3
Second Trimester Screening and Diagnosis
10 questions
21
What is the quad screen and what does it measure?
22
What is the role of AFP in second trimester screening?
23
What is an elevated MSAFP and what are the causes?
24
What is amniocentesis and what are its risks?
25
When is amniocentesis recommended over cell-free DNA screening?
26
What is the difference between amniocentesis and CVS?
27
What is a fetal echocardiogram and who should have one?
28
What is integrated screening and how does it compare to sequential screening?
29
What genetic conditions are detected by amniocentesis but not cell-free DNA?
30
What is a fetal MRI and when is it used in the second trimester?
4
Cervical Insufficiency and Preterm Birth Prevention
10 questions
31
What is cervical insufficiency and how is it diagnosed?
32
What is a short cervix and at what length is intervention recommended?
33
What is the evidence for vaginal progesterone for short cervix?
34
What is a cervical cerclage and who is a candidate?
35
What is the difference between history-indicated and ultrasound-indicated cerclage?
36
What is the PREVENT trial and what did it show about cerclage?
37
What is the arabin pessary and what is the evidence for its use?
38
What are the risk factors for spontaneous preterm birth?
39
What is cervical length screening and when should it be performed?
40
What lifestyle modifications reduce the risk of preterm birth?
5
Common Second Trimester Symptoms and Concerns
10 questions
41
What causes round ligament pain in the second trimester?
42
What causes back pain in pregnancy and how is it managed?
43
What is diastasis recti and when does it develop?
44
What causes leg cramps in pregnancy and what is the evidence for treatment?
45
What is pelvic girdle pain and how is it managed?
46
What causes skin changes like linea nigra and melasma in pregnancy?
47
What is the evidence on sleeping position in the second trimester?
48
What causes shortness of breath in the second trimester?
49
What dental changes occur in pregnancy and what care is safe?
50
What causes nosebleeds and gum bleeding in the second trimester?
6
Nutrition, Weight Gain, and Exercise
10 questions
51
What is the recommended weight gain in the second trimester?
52
What are the caloric needs in the second trimester?
53
What exercise is safe and beneficial in the second trimester?
54
What are the contraindications to exercise during the second trimester?
55
What is the evidence on iron supplementation in the second trimester?
56
What is gestational anemia and when should it be treated?
57
What foods remain off-limits in the second trimester?
58
What is the evidence on omega-3 supplementation in pregnancy?
59
How does gestational weight gain affect perinatal outcomes?
60
What is the evidence on probiotic supplementation during pregnancy?
7
Gestational Diabetes
10 questions
61
What is gestational diabetes and how is it diagnosed?
62
What is the one-step versus two-step approach to GDM screening?
63
When should GDM screening be performed?
64
What are the risks of gestational diabetes for the mother and baby?
65
What is the first-line treatment for gestational diabetes?
66
What glucose targets are recommended for gestational diabetes?
67
When is insulin required for gestational diabetes?
68
How does metformin compare to insulin for gestational diabetes?
69
How does GDM affect delivery planning and timing?
70
What is the long-term risk of type 2 diabetes after gestational diabetes?
8
Hypertensive Disorders in the Second Trimester
10 questions
71
What is chronic hypertension in pregnancy and how is it managed?
72
What is the difference between chronic hypertension and preeclampsia?
73
What is the evidence for low-dose aspirin in preeclampsia prevention?
74
What is the ACOG definition of preeclampsia?
75
What blood pressure threshold requires treatment in pregnancy?
76
What antihypertensive medications are safe in the second trimester?
77
What is the role of uterine artery Doppler in preeclampsia prediction?
78
What are the warning signs of severe preeclampsia?
79
What is HELLP syndrome and how is it recognized?
80
What is superimposed preeclampsia and how is it diagnosed?
9
Fetal Anomalies and Diagnosis
10 questions
81
What are the most common fetal structural anomalies detected at anatomy scan?
82
What is ventriculomegaly and what does it mean for the baby?
83
What is spina bifida and what are the management options after prenatal diagnosis?
84
What is a congenital heart defect and how is it managed prenatally?
85
What is a cleft lip and palate and how is it diagnosed prenatally?
86
What are the options when a lethal fetal anomaly is diagnosed?
87
What is gastroschisis versus omphalocele and how are they managed?
88
What is renal agenesis and what are its implications?
89
What is hydrops fetalis and what causes it?
90
What is the role of fetal intervention for anomalies diagnosed in the second trimester?
10
Infections and Exposures in the Second Trimester
10 questions
91
What is the risk of CMV infection in the second trimester?
92
What is toxoplasmosis and how is it prevented in pregnancy?
93
What is the impact of Zika virus exposure in the second trimester?
94
What is parvovirus B19 and what is the risk to the fetus?
95
What is the risk of Group B Streptococcus in the second trimester?
96
How is UTI managed in the second trimester?
97
What is bacterial vaginosis and does treatment improve pregnancy outcomes?
98
What is the evidence on influenza vaccination in the second trimester?
99
What is the risk of COVID-19 infection in the second trimester?
100
What sexually transmitted infections require treatment during the second trimester?