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First Trimester · 100 Questions

First 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 First Trimester Development
10 questions
1
What happens developmentally in the first trimester week by week?
Patient Claude GPT
Clinician Claude GPT
2
When does the heartbeat first appear on ultrasound?
Patient Claude GPT
Clinician Claude GPT
3
What is the embryonic period and when does it end?
Patient Claude GPT
Clinician Claude GPT
4
How does the placenta form and when does it take over hormone production?
Patient Claude GPT
Clinician Claude GPT
5
What is the yolk sac and what is its role?
Patient Claude GPT
Clinician Claude GPT
6
When do major organ systems form in the embryo?
Patient Claude GPT
Clinician Claude GPT
7
What is normal embryonic heart rate in the first trimester?
Patient Claude GPT
Clinician Claude GPT
8
How does fetal movement begin and when is it felt?
Patient Claude GPT
Clinician Claude GPT
9
What is the crown-rump length and how is gestational age calculated from it?
Patient Claude GPT
Clinician Claude GPT
10
What is the difference between an embryo and a fetus?
Patient Claude GPT
Clinician Claude GPT
2
First Prenatal Visit and Dating
10 questions
11
When should the first prenatal visit occur?
Patient Claude GPT
Clinician Claude GPT
12
What happens at the first prenatal visit?
Patient Claude GPT
Clinician Claude GPT
13
How is gestational age calculated and which method is most accurate?
Patient Claude GPT
Clinician Claude GPT
14
When should a first trimester ultrasound be performed?
Patient Claude GPT
Clinician Claude GPT
15
What blood tests are standard at the first prenatal visit?
Patient Claude GPT
Clinician Claude GPT
16
How is a due date determined and how accurate is it?
Patient Claude GPT
Clinician Claude GPT
17
What is Naegele's rule and how is it applied?
Patient Claude GPT
Clinician Claude GPT
18
What is the difference between gestational age and fetal age?
Patient Claude GPT
Clinician Claude GPT
19
When is an early pregnancy ultrasound necessary before routine dating?
Patient Claude GPT
Clinician Claude GPT
20
What information should be gathered at the first prenatal visit regarding prior pregnancies?
Patient Claude GPT
Clinician Claude GPT
3
Common First Trimester Symptoms
10 questions
21
What causes nausea and vomiting in pregnancy and when does it resolve?
Patient Claude GPT
Clinician Claude GPT
22
What is hyperemesis gravidarum and how is it treated?
Patient Claude GPT
Clinician Claude GPT
23
What is the evidence for vitamin B6 and doxylamine for nausea in pregnancy?
Patient Claude GPT
Clinician Claude GPT
24
What causes first trimester fatigue and when does it improve?
Patient Claude GPT
Clinician Claude GPT
25
What is implantation bleeding and how is it distinguished from miscarriage?
Patient Claude GPT
Clinician Claude GPT
26
What causes breast tenderness in early pregnancy?
Patient Claude GPT
Clinician Claude GPT
27
What is round ligament pain and when does it begin?
Patient Claude GPT
Clinician Claude GPT
28
What causes frequent urination in the first trimester?
Patient Claude GPT
Clinician Claude GPT
29
What food aversions and cravings are normal in early pregnancy?
Patient Claude GPT
Clinician Claude GPT
30
What headaches in the first trimester are normal versus concerning?
Patient Claude GPT
Clinician Claude GPT
4
First Trimester Screening
10 questions
31
What is first trimester combined screening and what does it detect?
Patient Claude GPT
Clinician Claude GPT
32
What is nuchal translucency and what does an abnormal result mean?
Patient Claude GPT
Clinician Claude GPT
33
What are PAPP-A and free beta-hCG and what do low or high values indicate?
Patient Claude GPT
Clinician Claude GPT
34
What is cell-free DNA screening and when is it offered?
Patient Claude GPT
Clinician Claude GPT
35
How does cell-free DNA screening compare to traditional first trimester screening?
Patient Claude GPT
Clinician Claude GPT
36
What is the difference between screening and diagnostic testing?
Patient Claude GPT
Clinician Claude GPT
37
What conditions can cell-free DNA screen for beyond trisomy 21?
Patient Claude GPT
Clinician Claude GPT
38
What are the limitations of cell-free DNA screening?
Patient Claude GPT
Clinician Claude GPT
39
When is chorionic villus sampling indicated and what are its risks?
Patient Claude GPT
Clinician Claude GPT
40
What is a positive first trimester screen result and what are the next steps?
Patient Claude GPT
Clinician Claude GPT
5
Medications and Exposures in the First Trimester
10 questions
41
What medications are safe to take in the first trimester?
Patient Claude GPT
Clinician Claude GPT
42
What over-the-counter pain relievers are safe in early pregnancy?
Patient Claude GPT
Clinician Claude GPT
43
What is the evidence on acetaminophen use during pregnancy?
Patient Claude GPT
Clinician Claude GPT
44
What antibiotics are safe in the first trimester?
Patient Claude GPT
Clinician Claude GPT
45
What antidepressants are considered safest in the first trimester?
Patient Claude GPT
Clinician Claude GPT
46
What is the risk of alcohol exposure in the first trimester?
Patient Claude GPT
Clinician Claude GPT
47
What radiation exposure is considered safe in pregnancy?
Patient Claude GPT
Clinician Claude GPT
48
What vaccinations are safe or contraindicated in the first trimester?
Patient Claude GPT
Clinician Claude GPT
49
What is the evidence on cannabis use in the first trimester?
Patient Claude GPT
Clinician Claude GPT
50
What environmental toxins pose the greatest risk in the first trimester?
Patient Claude GPT
Clinician Claude GPT
6
Miscarriage and Pregnancy Loss
10 questions
51
What is the overall risk of miscarriage in the first trimester?
Patient Claude GPT
Clinician Claude GPT
52
What are the most common causes of first trimester miscarriage?
Patient Claude GPT
Clinician Claude GPT
53
What symptoms indicate a possible miscarriage?
Patient Claude GPT
Clinician Claude GPT
54
What is a threatened miscarriage and how is it managed?
Patient Claude GPT
Clinician Claude GPT
55
What is a missed abortion and what are the management options?
Patient Claude GPT
Clinician Claude GPT
56
What is expectant versus medical versus surgical management of miscarriage?
Patient Claude GPT
Clinician Claude GPT
57
What is the evidence for misoprostol in first trimester pregnancy loss?
Patient Claude GPT
Clinician Claude GPT
58
What is a blighted ovum and how is the diagnosis made?
Patient Claude GPT
Clinician Claude GPT
59
What testing should be done after a first trimester loss?
Patient Claude GPT
Clinician Claude GPT
60
How soon after a miscarriage can a woman try to conceive again?
Patient Claude GPT
Clinician Claude GPT
7
Ectopic Pregnancy
10 questions
61
What is an ectopic pregnancy and where does it most commonly occur?
Patient Claude GPT
Clinician Claude GPT
62
What are the risk factors for ectopic pregnancy?
Patient Claude GPT
Clinician Claude GPT
63
How is ectopic pregnancy diagnosed?
Patient Claude GPT
Clinician Claude GPT
64
What is a discriminatory zone for hCG and how is it used?
Patient Claude GPT
Clinician Claude GPT
65
What are the symptoms of ectopic pregnancy and when is it an emergency?
Patient Claude GPT
Clinician Claude GPT
66
What is the medical treatment of ectopic pregnancy with methotrexate?
Patient Claude GPT
Clinician Claude GPT
67
Who is a candidate for methotrexate versus surgery for ectopic pregnancy?
Patient Claude GPT
Clinician Claude GPT
68
What are the risks of ectopic pregnancy rupture?
Patient Claude GPT
Clinician Claude GPT
69
What is a heterotopic pregnancy?
Patient Claude GPT
Clinician Claude GPT
70
What is the prognosis for future fertility after ectopic pregnancy?
Patient Claude GPT
Clinician Claude GPT
8
Nutrition and Supplements in the First Trimester
10 questions
71
What prenatal vitamin should be taken and when should it be started?
Patient Claude GPT
Clinician Claude GPT
72
How much folic acid is recommended in the first trimester and why?
Patient Claude GPT
Clinician Claude GPT
73
What is the recommended weight gain in the first trimester?
Patient Claude GPT
Clinician Claude GPT
74
What foods should be avoided in the first trimester?
Patient Claude GPT
Clinician Claude GPT
75
What is the evidence for fish consumption during the first trimester?
Patient Claude GPT
Clinician Claude GPT
76
What is the recommended daily intake of iron in early pregnancy?
Patient Claude GPT
Clinician Claude GPT
77
What is the evidence for DHA supplementation in the first trimester?
Patient Claude GPT
Clinician Claude GPT
78
What vitamin D level is recommended in early pregnancy?
Patient Claude GPT
Clinician Claude GPT
79
What is listeria and what foods carry the highest risk during pregnancy?
Patient Claude GPT
Clinician Claude GPT
80
What is the evidence on caffeine intake limits in the first trimester?
Patient Claude GPT
Clinician Claude GPT
9
Chronic Conditions in the First Trimester
10 questions
81
How should hypothyroidism be managed in the first trimester?
Patient Claude GPT
Clinician Claude GPT
82
What TSH level should be targeted in the first trimester?
Patient Claude GPT
Clinician Claude GPT
83
How does diabetes affect first trimester outcomes?
Patient Claude GPT
Clinician Claude GPT
84
How should pregestational diabetes be managed in the first trimester?
Patient Claude GPT
Clinician Claude GPT
85
What is the impact of hypertension on the first trimester?
Patient Claude GPT
Clinician Claude GPT
86
When should low-dose aspirin be started for preeclampsia prevention?
Patient Claude GPT
Clinician Claude GPT
87
How does autoimmune disease affect early pregnancy?
Patient Claude GPT
Clinician Claude GPT
88
What is antiphospholipid syndrome and how is it managed in the first trimester?
Patient Claude GPT
Clinician Claude GPT
89
How should asthma be managed in the first trimester?
Patient Claude GPT
Clinician Claude GPT
90
What is the evidence for progesterone supplementation in the first trimester?
Patient Claude GPT
Clinician Claude GPT
10
Bleeding and Pain in the First Trimester
10 questions
91
What are the causes of first trimester bleeding?
Patient Claude GPT
Clinician Claude GPT
92
How common is first trimester bleeding and what is the prognosis?
Patient Claude GPT
Clinician Claude GPT
93
What is a subchorionic hematoma and what does it mean for the pregnancy?
Patient Claude GPT
Clinician Claude GPT
94
When is first trimester bleeding an emergency?
Patient Claude GPT
Clinician Claude GPT
95
How is first trimester bleeding evaluated with ultrasound?
Patient Claude GPT
Clinician Claude GPT
96
What is the role of serial hCG measurement in first trimester bleeding?
Patient Claude GPT
Clinician Claude GPT
97
What causes first trimester pelvic pain and how is it evaluated?
Patient Claude GPT
Clinician Claude GPT
98
What is a corpus luteum cyst and does it need treatment?
Patient Claude GPT
Clinician Claude GPT
99
How is an ovarian torsion diagnosed and managed in early pregnancy?
Patient Claude GPT
Clinician Claude GPT
100
What is the difference between a viable, nonviable, and pregnancy of unknown location?
Patient Claude GPT
Clinician Claude GPT