Mcq on hypertension and diabetic in pregnancy obs based on Williams book

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I now have rich content from Creasy & Resnik's Maternal-Fetal Medicine (which parallels Williams Obstetrics content). Let me now compile a thorough set of MCQs based on all the information gathered.

Here is a set of 20 high-yield MCQs on Hypertension and Diabetes in Pregnancy, based on Williams Obstetrics principles (content cross-referenced with Creasy & Resnik's Maternal-Fetal Medicine and other standard OB/GYN sources).

MCQs: Hypertension & Diabetes in Pregnancy

PART A: HYPERTENSION IN PREGNANCY

Q1. A 28-year-old primigravida at 34 weeks presents with BP 158/106 mmHg on two readings 6 hours apart, headache, and 2+ proteinuria. The most appropriate drug for acute blood pressure control in this setting is:

A. Methyldopa
B. Labetalol IV
C. ACE inhibitor
D. Atenolol

Answer: B - Labetalol IV Rationale: For acute severe hypertension in pregnancy (systolic >160 or diastolic >110 mmHg persistent for ≥15 min), IV labetalol, IV hydralazine, or oral nifedipine are first-line agents per national guidelines. ACE inhibitors are contraindicated in pregnancy. Methyldopa is used for chronic management, not acute control. - Creasy & Resnik's Maternal-Fetal Medicine

Q2. The threshold for treating severe-range hypertension in pregnancy, as per current US national guidelines, is:

A. Systolic ≥140 mmHg or diastolic ≥90 mmHg for 30 minutes
B. Systolic ≥160 mmHg or diastolic ≥110 mmHg for ≥15 minutes
C. Systolic ≥150 mmHg or diastolic ≥100 mmHg for ≥30 minutes
D. Any single reading of systolic ≥170 mmHg

Answer: B - Systolic ≥160 or diastolic ≥110 mmHg for ≥15 minutes Rationale: National guidelines recommend aggressive antihypertensive treatment when severe-range BP is confirmed as persistent for 15 minutes or more. - Creasy & Resnik's Maternal-Fetal Medicine

Q3. HELLP syndrome is an acronym for which combination?

A. Hypertension, Elevated LFTs, Low Protein
B. Hemolysis, Elevated Liver enzymes, Low Platelets
C. High Estrogen, Liver Lesion, Low Potassium
D. Hemolysis, Elevated LH, Low Prolactin

Answer: B - Hemolysis, Elevated Liver enzymes, Low Platelets Rationale: HELLP is a severe variant of preeclampsia. Diagnosis requires all three components: microangiopathic hemolytic anemia, elevated liver enzymes (transaminases), and thrombocytopenia (platelets typically <100,000/µL). - Creasy & Resnik's Maternal-Fetal Medicine; Brenner & Rector's The Kidney

Q4. Preeclampsia can be diagnosed WITHOUT proteinuria if which of the following features are present?

A. Peripheral edema and weight gain >2 kg/week
B. Thrombocytopenia, elevated liver enzymes, acute kidney injury, or cerebral/visual symptoms
C. Systolic BP ≥140 mmHg on two occasions 4 hours apart
D. Hyperuricemia alone

Answer: B - Thrombocytopenia, elevated liver enzymes, AKI, or cerebral/visual symptoms Rationale: Updated diagnostic criteria allow preeclampsia to be diagnosed without proteinuria when severe features such as thrombocytopenia (<100,000/µL), elevated liver enzymes, AKI, cerebral symptoms, or visual disturbances are present. Hyperuricemia is common but NOT a diagnostic criterion. - Brenner & Rector's The Kidney

Q5. Which of the following is the MOST common symptom preceding an eclamptic seizure?

A. Epigastric pain
B. Visual signs
C. Headache
D. Clonus

Answer: C - Headache Rationale: From the Magpie study data, headache is the most common premonitory symptom, occurring in 83% of patients, followed by hyperreflexia (80%) and proteinuria (80%). Importantly, 17% of eclampsia cases have NO headache. - Creasy & Resnik's Maternal-Fetal Medicine

Q6. Magnesium sulfate is preferred over phenytoin for seizure prophylaxis in preeclampsia because:

A. It lowers blood pressure more effectively
B. It has a shorter half-life
C. It is superior for seizure prevention and has a well-established safety profile in mother and fetus
D. It has no maternal side effects

Answer: C - Superior seizure prevention with established maternal/fetal safety Rationale: The Magpie Trial (10,000 preeclamptic women) confirmed magnesium sulfate is superior to both phenytoin and diazepam for seizure prophylaxis. It does NOT significantly lower blood pressure at prophylactic doses. - Creasy & Resnik's Maternal-Fetal Medicine

Q7. A woman with eclampsia is on magnesium sulfate infusion. She develops loss of deep tendon reflexes. The next step is:

A. Increase the magnesium dose
B. Stop magnesium and administer calcium gluconate
C. Add phenytoin
D. Perform emergency C-section

Answer: B - Stop magnesium and administer calcium gluconate Rationale: Loss of deep tendon reflexes is an early sign of magnesium toxicity (typically at serum levels 7-10 mEq/L). Respiratory depression follows at higher levels. Calcium gluconate is the antidote, administered as 1 g IV.

Q8. Mothers with which of the following have the HIGHEST risk of severe complications in HELLP syndrome?

A. Nulliparous women under age 25
B. Superimposed preeclampsia and older multiparas
C. Women with GDM
D. Women with a singleton pregnancy

Answer: B - Superimposed preeclampsia and older multiparas Rationale: Mothers with superimposed preeclampsia and older multiparas with HELLP syndrome have the highest risk for severe complications, often requiring multidisciplinary team management. - Creasy & Resnik's Maternal-Fetal Medicine

Q9. The greatest risk factor for intracranial hemorrhage in preeclampsia is:

A. Proteinuria >5g/24h
B. Undertreated severe hypertension, especially with low/borderline platelets
C. Serum uric acid >7 mg/dL
D. Bilateral pedal edema

Answer: B - Undertreated severe hypertension with low/borderline platelets Rationale: Of women who die from preeclampsia, the large majority die from complications of severe hypertension including intracranial hemorrhage. Undertreated hypertension with thrombocytopenia is the greatest risk factor. - Creasy & Resnik's Maternal-Fetal Medicine

Q10. A postpartum woman presents to the ER 3 days after delivery with BP 168/112 mmHg. The ER staff should:

A. Observe and recheck in 4 hours
B. Discharge with oral antihypertensives and outpatient follow-up
C. Promptly initiate antihypertensive therapy and consult obstetrics
D. Start magnesium sulfate only if she seizes

Answer: C - Prompt antihypertensive therapy and obstetrics consultation Rationale: A BP >160/110 mmHg in the postpartum period requires prompt treatment and obstetric consultation. Preeclampsia frequently manifests or worsens in the postpartum period. - Creasy & Resnik's Maternal-Fetal Medicine

PART B: DIABETES IN PREGNANCY

Q11. Gestational diabetes mellitus (GDM) screening is routinely recommended at:

A. 10-14 weeks gestation
B. 18-20 weeks gestation
C. 24-28 weeks gestation
D. 32-34 weeks gestation

Answer: C - 24-28 weeks gestation Rationale: Routine and uniform screening for GDM via either a one-step 75-g 2-hour OGTT or a two-step approach (50-g GCT followed by 100-g OGTT) is recommended at 24-28 weeks. Women with high-risk features may be screened earlier using nonpregnancy criteria. - Creasy & Resnik's Maternal-Fetal Medicine; ACOG Practice Bulletin 190

Q12. In the two-step approach for GDM screening, a 50-g glucose challenge test (GCT) result of ≥140 mg/dL at 1 hour should be followed by:

A. Immediate diagnosis of GDM
B. Fasting glucose measurement the next morning
C. A 100-g, 3-hour oral glucose tolerance test (OGTT)
D. HbA1c measurement

Answer: C - 100-g, 3-hour OGTT Rationale: A 50-g GCT result ≥135-140 mg/dL (threshold at provider discretion) triggers a confirmatory 100-g, 3-hour OGTT. Two or more abnormal values on the OGTT are required to diagnose GDM. - Creasy & Resnik's Maternal-Fetal Medicine

Q13. Using the Carpenter-Coustan criteria, GDM is diagnosed on a 100-g 3-hour OGTT when ≥2 values meet or exceed which thresholds?

Time	Threshold
Fasting	95 mg/dL
1 hour	180 mg/dL
2 hours	155 mg/dL
3 hours	140 mg/dL

A woman has fasting 98, 1h 175, 2h 158, 3h 135. Does she have GDM?

A. Yes, because fasting is abnormal
B. Yes, because 2 values (fasting and 2h) meet/exceed thresholds
C. No, because only 1 value (fasting) is clearly abnormal
D. No, because the 3h value is normal

Answer: B - Yes, fasting 98 ≥95 and 2h 158 ≥155 = 2 abnormal values Rationale: Fasting 98 ≥95 (abnormal) and 2h 158 ≥155 (abnormal) = 2 abnormal values, meeting criteria for GDM diagnosis. The 1h 175 is below 180 (normal) and 3h 135 is below 140 (normal). - Creasy & Resnik's Maternal-Fetal Medicine, Table 59.2

Q14. A woman with pregestational Type 1 diabetes is most likely to experience an INCREASE in insulin requirements during which period of pregnancy?

A. 4-9 weeks (first trimester)
B. 9-16 weeks
C. 16-37 weeks
D. After 37 weeks until delivery

Answer: C - 16-37 weeks Rationale: Insulin requirements are variable in early gestation with possible decreases between 9-16 weeks. The greatest increase in insulin dosage requirements occurs between 16 and 37 weeks, with a plateau or small decline thereafter due to progressive insulin resistance. - Creasy & Resnik's Maternal-Fetal Medicine

Q15. Compared to non-diabetic pregnancies, women with pregestational diabetes have approximately what odds ratio for cesarean delivery?

A. 1.5
B. 3.4
C. 11.3
D. 14.2

Answer: C - 11.3 Rationale: Women with pregestational diabetes have significantly increased odds of cesarean delivery (OR = 11.3), hypertension (OR = 14.2), preeclampsia (OR = 3.4), and preterm birth (OR = 4.4) compared to non-diabetic women. - Creasy & Resnik's Maternal-Fetal Medicine

Q16. The single greatest risk factor for retinopathy progression during pregnancy in a woman with Type 1 diabetes is:

A. GDM in the current pregnancy
B. Elevated prepregnancy HbA1c and duration of diabetes ≥10 years
C. Multiparity
D. BMI >30 kg/m²

Answer: B - Elevated prepregnancy HbA1c and diabetes duration ≥10 years Rationale: The best predictors of retinopathy progression during pregnancy are elevated prepregnancy HbA1c and diabetes duration ≥10 years. Notably, use of continuous subcutaneous insulin infusion (CSII) significantly decreases the risk of progression. - Creasy & Resnik's Maternal-Fetal Medicine

Q17. In women with GDM, compared to normal glucose-tolerant (NGT) women, insulin's ability to suppress endogenous glucose production is:

A. Identical to NGT women
B. Increased (approximately 98% vs 95%)
C. Decreased (approximately 80% vs 95%)
D. Completely absent

Answer: C - Decreased (~80% vs ~95%) Rationale: Insulin infusion assays show that GDM women have decreased insulin suppression of endogenous glucose production (~80%) compared to matched controls (~95%), indicating hepatic insulin resistance. - Creasy & Resnik's Maternal-Fetal Medicine

Q18. The overall decrease in total insulin sensitivity during normal pregnancy (compared to the pregravid state) is approximately:

A. 10-20%
B. 30-40%
C. 50-60%
D. 70-80%

Answer: C - 50-60% Rationale: The average percentage decrease in total insulin sensitivity (endogenous plus peripheral) is approximately 50-60% during pregnancy, similar in both women with GDM and matched controls, although GDM women start from a lower pregravid baseline. - Creasy & Resnik's Maternal-Fetal Medicine

Q19. A woman with Type 1 DM for 18 years presents for preconception counseling. She is at highest risk for which ophthalmological complication if she becomes pregnant?

A. Cataracts
B. Open-angle glaucoma
C. Proliferative diabetic retinopathy
D. Optic neuritis

Answer: C - Proliferative diabetic retinopathy Rationale: Nearly 100% of women with T1DM for 25 years have some form of retinopathy; approximately 20% are legally blind. Pregnancy can accelerate progression. The pattern progresses from nonproliferative to proliferative vasculopathy, causing vision loss from macular edema, tractional retinal detachment, and vitreous hemorrhage. - Creasy & Resnik's Maternal-Fetal Medicine

Q20. A pregnant woman at 26 weeks with GDM has a fasting glucose of 118 mg/dL despite 2 weeks of dietary therapy. The most appropriate next step is:

A. Continue dietary therapy for another 4 weeks
B. Initiate insulin therapy
C. Admit for inpatient glycemic management
D. Perform emergent delivery

Answer: B - Initiate insulin therapy Rationale: Insulin is the standard pharmacological therapy when diet alone fails to maintain glycemic targets in GDM. Fasting glucose ≥95-105 mg/dL despite dietary modification warrants initiation of insulin (or in some guidelines, oral agents such as metformin or glyburide as alternatives).

Summary Table

#	Topic	Correct Answer
1	Acute BP control in preeclampsia	Labetalol IV
2	Threshold for treating severe HTN	≥160/110 for ≥15 min
3	HELLP acronym	Hemolysis, Elevated LFTs, Low Platelets
4	Preeclampsia without proteinuria	Severe features (thrombocytopenia, AKI, etc.)
5	Most common pre-eclamptic symptom	Headache (83%)
6	MgSO4 vs phenytoin	MgSO4 superior - Magpie Trial
7	MgSO4 toxicity - DTR loss	Stop MgSO4, give Ca gluconate
8	Highest risk HELLP complication	Superimposed PEC + older multipara
9	Risk for intracranial hemorrhage	Undertreated severe HTN + low platelets
10	Postpartum severe HTN in ER	Treat promptly + consult OB
11	GDM screening timing	24-28 weeks
12	Abnormal GCT next step	100-g 3-hour OGTT
13	OGTT interpretation	≥2 abnormal values = GDM
14	Insulin requirements highest in T1DM	16-37 weeks
15	OR for C-section in pregestational DM	11.3
16	Retinopathy progression risk	Pre-preg HbA1c + duration ≥10 yrs
17	Insulin suppression GDM vs NGT	Decreased (~80% vs 95%)
18	Insulin sensitivity decrease in pregnancy	50-60%
19	Ophthalmic risk T1DM 18 years	Proliferative retinopathy
20	GDM - diet fails, fasting 118	Initiate insulin

Sources: Creasy & Resnik's Maternal-Fetal Medicine (Principles and Practice), Brenner & Rector's The Kidney - these align closely with Williams Obstetrics 26th edition content on hypertensive disorders and diabetes in pregnancy.

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