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Exam Review

Key Facts: CMGO Ginecología y Obstetricia Exam

450

Four-option items (225 knowledge + 45 cases × 5)

CMGO study guide

5 hours

Four blocks of 1 h 15 min

CMGO study guide

Tue–Fri

Online exam days; in person on Mondays at WTC CDMX

CMGO

Clinical cases

Phase that renewing specialists may sit alone

CMGO

5 years

Certification validity

CONACEM

The CMGO certification exam is the CONACEM-recognized OB/GYN board exam in Mexico: 450 four-option items (225 knowledge items plus 45 five-item clinical cases) over 5 hours, taken online or in person year-round.

Sample CMGO Ginecología y Obstetricia Practice Questions

Try these sample questions to review concepts for the CMGO Ginecología y Obstetricia exam. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1A 22-year-old primigravida presents for her first prenatal visit at 8 weeks of gestation. According to Norma Oficial Mexicana NOM-007-SSA2-2016, which set of baseline laboratory examinations must be ordered during the first antenatal consultation?
A.Complete blood count, blood group and Rh factor (indirect Coombs if Rh-negative), fasting glucose plus 1-hour glucose after a 50 g load, serum creatinine, uric acid, urinalysis with urine culture, syphilis test, and HIV screening with counseling and consent
B.Complete blood count, coagulation profile, fasting blood glucose, serum electrolytes, liver function tests, urinalysis, and cytomegalovirus serology
C.Complete blood count, blood typing and Rh factor, 75 g oral glucose tolerance test, serum ferritin, torch profile, and cervical cytology
D.Complete blood count, fasting blood glucose, qualitative hCG, urine dipstick for protein, VDRL, and pelvic ultrasound only
Explanation: NOM-007-SSA2-2016 section 5.2.1.14 lists the prenatal laboratory tests: complete blood count; blood group and Rh factor (indirect Coombs in Rh-negative women); fasting glucose and 1-hour glucose after a 50 g load; creatinine; uric acid; urinalysis, with a dipstick at every visit and a urine culture so that bacteriuria can be treated; and a syphilis test. HIV and syphilis screening is offered in the first 12 weeks after counseling and with informed consent.
2A 28-year-old nulliparous woman at 26 weeks of gestation undergoes universal screening for gestational diabetes mellitus (GDM) using the one-step 75 g oral glucose tolerance test (OGTT) interpreted with IADPSG criteria. Which diagnostic cutoff values confirm GDM?
A.Fasting >= 100 mg/dL, 1-hour >= 190 mg/dL, or 2-hour >= 165 mg/dL (at least two abnormal values required)
B.Fasting >= 92 mg/dL, 1-hour >= 180 mg/dL, or 2-hour >= 153 mg/dL (a single abnormal value confirms the diagnosis)
C.Fasting >= 105 mg/dL, 1-hour >= 190 mg/dL, 2-hour >= 165 mg/dL, or 3-hour >= 145 mg/dL (at least two abnormal values required)
D.Fasting >= 126 mg/dL or 2-hour >= 200 mg/dL exclusively
Explanation: According to IADPSG/ADA criteria, the one-step 75 g oral glucose tolerance test diagnoses gestational diabetes when any single value is met or exceeded: Fasting >= 92 mg/dL (5.1 mmol/L), 1-hour >= 180 mg/dL (10.0 mmol/L), or 2-hour >= 153 mg/dL (8.5 mmol/L).
3A 31-year-old woman at 28 weeks of gestation is newly diagnosed with gestational diabetes. What are the glycemic self-monitoring targets recommended during pregnancy by ADA and ACOG guidelines?
A.Fasting < 80 mg/dL, 1-hour postprandial < 110 mg/dL, and 2-hour postprandial < 100 mg/dL
B.Fasting < 105 mg/dL, 1-hour postprandial < 155 mg/dL, and 2-hour postprandial < 130 mg/dL
C.Fasting < 95 mg/dL, 1-hour postprandial < 140 mg/dL, and 2-hour postprandial < 120 mg/dL
D.Fasting < 126 mg/dL, 1-hour postprandial < 180 mg/dL, and HbA1c < 7.0%
Explanation: ADA and ACOG standards establish that capillary glucose targets in pregnancy are: fasting glucose < 95 mg/dL (5.3 mmol/L), 1-hour postprandial glucose < 140 mg/dL (7.8 mmol/L), and 2-hour postprandial glucose < 120 mg/dL (6.7 mmol/L). These tight targets minimize risks of fetal macrosomia, neonatal hypoglycemia, and shoulder dystocia.
4A 34-year-old woman at 30 weeks of gestation with gestational diabetes has adhered strictly to medical nutrition therapy and moderate exercise for two weeks. However, her fasting capillary glucose levels consistently range between 105 and 118 mg/dL. What is the recommended pharmacotherapy?
A.Initiate glibenclamide (glyburide) at 5 mg daily before breakfast
B.Continue diet and lifestyle for another four weeks before prescribing medications
C.Prescribe acarbose 50 mg three times daily with meals
D.Initiate human insulin therapy (NPH and rapid-acting regular or lispro/aspart)
Explanation: Insulin is the gold standard and first-line pharmacologic treatment for gestational diabetes failing nutritional therapy according to ADA and ACOG guidance. Unlike oral agents, insulin does not cross the placenta in significant amounts and provides superior glycemic titration to prevent fetal macrosomia and maternal-fetal morbidity.
5A 29-year-old primigravida at 34 weeks of gestation presents with a blood pressure of 145/95 mmHg confirmed on two occasions 4 hours apart. She is asymptomatic. Urinalysis demonstrates 1+ protein, and a 24-hour urine collection reveals 380 mg of protein. Serum creatinine is 0.7 mg/dL, AST 24 U/L, and platelets 210,000/microL. What is the diagnosis?
A.Gestational hypertension
B.Preeclampsia without severe features (criterios de no severidad)
C.Preeclampsia with severe features (criterios de severidad)
D.Chronic hypertension with superimposed preeclampsia
Explanation: Preeclampsia without severe features is defined as systolic blood pressure >= 140 mmHg or diastolic blood pressure >= 90 mmHg on two occasions at least 4 hours apart after 20 weeks of gestation in a previously normotensive woman, accompanied by proteinuria (>= 300 mg/24 hours or protein/creatinine ratio >= 0.3 mg/mg), without any severe features or end-organ dysfunction.
6Which of the following clinical or laboratory findings classifies a patient with preeclampsia as having severe features (criterios de severidad)?
A.Proteinuria of 500 mg in a 24-hour urine collection
B.Trace ankle edema with normal deep tendon reflexes
C.Serum creatinine greater than 1.1 mg/dL in the absence of other renal disease
D.Fetal heart rate acceleration on cardiotocography
Explanation: Severe features of preeclampsia include: systolic BP >= 160 mmHg or diastolic BP >= 110 mmHg; thrombocytopenia (platelet count < 100,000/microL); impaired liver function (elevated transaminases to twice the upper limit of normal or severe persistent right upper quadrant/epigastric pain); progressive renal insufficiency (serum creatinine > 1.1 mg/dL or doubling of baseline); pulmonary edema; and new-onset visual disturbances or persistent headache unresponsive to medication. Proteinuria level alone no longer defines severe disease.
7A 19-year-old primigravida at 37 weeks of gestation arrives at the emergency department having a generalized tonic-clonic seizure. Her blood pressure is 170/115 mmHg. After securing airway, breathing, and circulation, what is the mandatory immediate pharmacologic regimen for seizure control according to the Zuspan protocol?
A.Diazepam 10 mg IV push followed by phenytoin 1000 mg IV infusion
B.Labetalol 40 mg IV bolus followed by hydralazine 10 mg IV
C.Phenobarbital 200 mg IM every 8 hours
D.Magnesium sulfate: 4 g IV loading dose over 15 to 20 minutes, followed by a continuous infusion of 1 g per hour IV
Explanation: The Zuspan protocol is a standard international regimen for eclampsia and seizure prophylaxis in preeclampsia with severe features. It consists of an intravenous loading dose of 4 g magnesium sulfate diluted in 250 mL of 5% dextrose or saline infused over 15-20 minutes, followed immediately by a maintenance continuous intravenous infusion of 1 g per hour.
8A patient with preeclampsia with severe features is receiving an intravenous magnesium sulfate infusion. During hourly monitoring, the nurse notes absent patellar reflexes, a respiratory rate of 9 breaths per minute, and urine output of 15 mL/hour over the past 2 hours. What is the immediate required management?
A.Immediately stop the magnesium sulfate infusion and administer 1 g of 10% calcium gluconate IV slowly over 3 to 5 minutes
B.Increase the IV maintenance fluid rate and re-check reflexes in 30 minutes
C.Administer 20 mg of IV furosemide to increase urinary magnesium excretion
D.Administer naloxone 0.4 mg IV push
Explanation: Absent deep tendon reflexes (loss of patellar reflex occurs at serum levels of 8-10 mEq/L) and bradypnea (< 12 breaths/min, occurring at > 10-12 mEq/L) are classic signs of life-threatening hypermagnesemia / magnesium toxicity, exacerbated by oliguria. The infusion must be halted immediately, and the specific antidote, calcium gluconate (10% solution, 1 g [10 mL] IV administered slowly over 3-5 minutes), must be given to reverse cardiac and neuromuscular toxicity.
9A 32-year-old woman at 35 weeks of gestation presents with severe preeclampsia and a blood pressure of 175/115 mmHg. According to ACOG guidance, what is an appropriate first-line rapid-acting antihypertensive agent and its therapeutic goal?
A.Sublingual nitroglycerin spray to reduce blood pressure below 110/70 mmHg within 10 minutes
B.Oral enalapril 20 mg to achieve normotensive values within 2 hours
C.Oral immediate-release nifedipine 10 mg capsule swallowed, aiming for a blood pressure between 140-150 / 90-100 mmHg
D.Sodium nitroprusside continuous infusion to achieve a mean arterial pressure reduction of 50%
Explanation: First-line rapid-acting antihypertensives for severe obstetric hypertension (>= 160/110 mmHg) in ACOG and other international guidelines are oral immediate-release nifedipine (10 mg capsule swallowed, not bitten), intravenous labetalol, or intravenous hydralazine. The therapeutic goal is a controlled reduction to 140-150 / 90-100 mmHg to prevent hemorrhagic stroke without compromising uteroplacental perfusion.
10A 30-year-old multigravida at 33 weeks of gestation presents with severe epigastric pain, nausea, and headache. Laboratory results show hemoglobin 9.2 g/dL, platelets 68,000/microL, total bilirubin 1.8 mg/dL (indirect 1.3 mg/dL), AST 185 U/L, ALT 160 U/L, and lactate dehydrogenase (LDH) 820 U/L. A peripheral blood smear reveals schistocytes. What condition does this represent?
A.Acute fatty liver of pregnancy (AFLP)
B.Thrombotic thrombocytopenic purpura (TTP)
C.Intrahepatic cholestasis of pregnancy
D.HELLP syndrome
Explanation: This patient fulfills the classic Tennessee / Mississippi criteria for HELLP syndrome: Hemolysis (microangiopathic hemolytic anemia with schistocytes, elevated total/indirect bilirubin, and LDH > 600 U/L); Elevated Liver enzymes (AST/ALT >= 70 U/L); and Low Platelets (< 100,000/microL, Class 2 HELLP in Mississippi classification). It represents a severe variant of preeclampsia requiring stabilization and prompt delivery planning.

About the CMGO Ginecología y Obstetricia Exam

Independent CMGO obstetrics and gynecology certification study practice by OpenExamPrep. The Consejo Mexicano de Ginecología y Obstetricia, A.C., recognized by CONACEM, certifies OB/GYN specialists with a 450-item computer-based exam (225 knowledge items plus 45 clinical cases with 5 items each) lasting 5 hours. It is offered online Tuesday to Friday and in person on Mondays at the CMGO office in the WTC, Mexico City, and at FEMECOG congresses. The official exam is in Spanish; this bank is an independent English-language MCQ study adaptation built on NOM-007-SSA2-2016, NOM-041-SSA2-2011 and current international guidelines. It is not an official translation or simulation.

Exam sponsor: Consejo Mexicano de Ginecología y Obstetricia, A.C. (CMGO). The requirements and fees below concern the certification or admission exam, separate from our free practice resources.

Assessment

Computer-based exam of 450 four-option multiple-choice items in two phases: a knowledge phase (225 items, including basic sciences) and a clinical-cases phase (45 cases with 5 items each). It lasts 5 hours in four blocks of 1 h 15 min. The CMGO study guide organizes content around 15 APROC (actividades profesionales confiables). Specialists renewing certification by exam may sit only the clinical-cases phase. Candidates who fail get a free second attempt between 7 days and 6 months later.

Time Limit

5 hours (four blocks of 1 h 15 min)

Passing Score

not-published

Exam / Certification Fees

Not published (shown during CMGO online registration)

Exam sponsor website

Fees, eligibility, and exam policies can change. Confirm them with the exam sponsor before applying or paying.

Official sources

Our practice resources: topics covered

We aim to reflect publicly available exam outlines and topic information in our study resources. Coverage, format, and difficulty may differ from the actual exam, and we cannot guarantee that every detail is accurate or current. Confirm exam requirements, fees, and policies with the official exam sponsor.

Core section (weight not published)

Obstetricia: Control Prenatal, Patología Médica y Complicaciones

Routine prenatal surveillance schedule, ultrasound timing, gestational diabetes diagnosis and glycemic control, hypertensive disorders (gestational hypertension, preeclampsia with/without severe features, eclampsia, HELLP), Zuspan protocol, antihypertensive drugs, preterm labor tocolysis, antenatal corticosteroids, and PPROM management

Core section (weight not published)

Obstetricia: Parto, Hemorragia Obstétrica y Puerperio

Normal labor progress, WHO/Mexican partogram interpretation, electronic fetal heart rate monitoring categories, active management of the third stage of labor, postpartum hemorrhage (4 Ts: tone, trauma, tissue, thrombin), medical uterotonics (oxytocin, carbetocin, misoprostol, ergometrine), uterine balloon tamponade, compression sutures (B-Lynch), and puerperal infections

Core section (weight not published)

Ginecología General y Endocrinología Ginecológica

Abnormal uterine bleeding (FIGO PALM-COEIN classification), medical and surgical management of uterine leiomyomas, adenomyosis, endometriosis diagnosis and staging, polycystic ovary syndrome (Rotterdam criteria, metabolic risks, letrozole), primary and secondary amenorrhea algorithms, climacteric syndrome and hormone therapy, pelvic organ prolapse (POP-Q), and urinary incontinence

Core section (weight not published)

Oncología Ginecológica y Patología Mamaria

Cervical cancer screening protocols (NOM-014, cytology, HPV co-testing), colposcopic terminology and biopsy criteria, cervical cancer FIGO staging and management, endometrial hyperplasia and carcinoma, epithelial ovarian cancer vs germ cell tumors, benign breast lesions (fibroadenoma, cysts), and breast cancer early detection (NOM-041)

Core section (weight not published)

Planificación Familiar e Infecciones del Tracto Genital

Contraceptive eligibility criteria (NOM-005, WHO MEC), immediate postpartum and interval IUD insertion, subdermal implant indications, emergency contraception, pelvic inflammatory disease diagnostic criteria and inpatient/outpatient antibiotic regimens, bacterial vaginosis, vulvovaginal candidiasis, and trichomoniasis

Preparing for the CMGO Ginecología y Obstetricia Exam

What You Need to Know

  • Passing score: not-published
  • Assessment: Computer-based exam of 450 four-option multiple-choice items in two phases: a knowledge phase (225 items, including basic sciences) and a clinical-cases phase (45 cases with 5 items each). It lasts 5 hours in four blocks of 1 h 15 min. The CMGO study guide organizes content around 15 APROC (actividades profesionales confiables). Specialists renewing certification by exam may sit only the clinical-cases phase. Candidates who fail get a free second attempt between 7 days and 6 months later.
  • Time limit: 5 hours (four blocks of 1 h 15 min)
  • Exam / certification fees: Not published (shown during CMGO online registration) Official sources

Using Our Practice Resources

  • Work through all 100 available questions
  • Review every answer and explanation
  • Track weak areas and revisit them
  • Use our AI tutor for tough concepts

CMGO Ginecología y Obstetricia: Suggested Study Strategy

1Master the diagnostic criteria and management thresholds of hypertensive disorders of pregnancy according to ACOG and ISSHP guidance: severe features definition, Zuspan magnesium sulfate dosing, target blood pressures, and rapid-acting antihypertensive protocols (labetalol, hydralazine, nifedipine).
2Memorize the diagnostic algorithms and glycemic targets for gestational diabetes: one-step (IADPSG 75 g OGTT) vs two-step (50 g O'Sullivan screening followed by 100 g OGTT) criteria and fasting/postprandial glycemic thresholds.
3Rehearse the stepwise management of postpartum hemorrhage (Código Mater): active management of the third stage, uterine massage, bimanual compression, uterotonics (oxytocin, carbetocin, ergometrine, misoprostol), intrauterine balloon tamponade, and surgical techniques (B-Lynch suture, hypogastric artery ligation).
4Review the FIGO PALM-COEIN classification for abnormal uterine bleeding, differentiating structural causes (polyp, adenomyosis, leiomyoma, malignancy) from non-structural causes (coagulopathy, ovulatory dysfunction, endometrial, iatrogenic, not otherwise classified).
5Know the Mexican Official Norms that shape practice: NOM-007-SSA2-2016 (prenatal labs, ultrasound at 11–13.6, 18–22 and 29–30 weeks, active management of the third stage, no Kristeller maneuver), NOM-014-SSA2-1994 (cervical cancer screening) and NOM-041-SSA2-2011 (biennial screening mammography at 40–69).

Frequently Asked Questions

What is the CMGO certification examination?

The Examen de Certificación en Ginecología y Obstetricia is administered by the Consejo Mexicano de Ginecología y Obstetricia, A.C. (CMGO), the council recognized by CONACEM for the specialty. It verifies that OB/GYN specialists meet the national standard for specialist practice.

When and where is the CMGO exam administered?

According to the CMGO exam calendar, candidates can sit the computer-based exam online Tuesday through Friday throughout the entire year. In addition, in-person testing sessions are held on Mondays at the CMGO office in the World Trade Center (WTC) in Mexico City, as well as on-site during FEMECOG regional and national congresses.

How does the examination differ for initial certification versus recertification?

Initial certification requires both phases: the knowledge phase (225 items) and the clinical-cases phase (45 cases with 5 items each). Specialists renewing their certification by exam, rather than by CME points, may sit only the clinical-cases phase.

How many questions are there, and what are the fee and passing score?

The exam has 450 four-option multiple-choice items and lasts 5 hours in four blocks of 1 h 15 min. The CMGO does not publish the fee or the cut score on its public pages; the fee is shown during online registration. Candidates who fail get a free second attempt between 7 days and 6 months later.

Why is this OpenExamPrep question bank provided in English?

The official CMGO examination is conducted in Spanish. This bank is an independent English-language MCQ study adaptation for reviewing clinical reasoning and management; it is not an official translation or simulation. Mexican standards such as NOM-007-SSA2-2016, NOM-041-SSA2-2011 and Código Mater are included where relevant.