Iran Specialty Board - Obstetrics & Gynecology common mistakes
Iran Specialty Board - Obstetrics & Gynecology · Understand the traps and how to avoid them.
When a labor curve question shows slow cervical dilation, the candidate immediately chooses cesarean delivery or diagnoses arrest of labor without first checking whether the latent or active phase criteria are met and whether adequate uterine contractions and descent have been documented.
Iranian residency training emphasizes interventional management, and candidates memorize 'arrest = cesarean' as a reflex. They skip the stepwise ACOG approach (latent phase prolongation vs. active phase protraction vs. arrest) and forget that arrest requires at least 6 cm dilation with ruptured membranes and inadequate contractions despite at least 4 hours of adequate oxytocin, or 6 hours with adequate contractions.
What to do instead
Before answering any labor curve item, write down three data points: phase (latent <6 cm vs. active ≥6 cm), contraction adequacy, and membrane status. Then apply the criteria in order. Practice with 20 curve vignettes forcing yourself to state the phase aloud before selecting management.
The candidate manages preeclampsia with severe features by giving antihypertensives and then delaying delivery for steroid completion or 'stabilization' beyond 34 weeks, or treats gestational hypertension at term with expectant management.
Candidates conflate the preterm (<34 weeks) expectant-management window with term management and forget that at ≥34 weeks with severe features, or ≥37 weeks with gestational hypertension, delivery is indicated. They also confuse the trigger thresholds for treatment (≥160/110) with the thresholds for diagnosis (≥140/90).
What to do instead
Build a one-page table: diagnosis thresholds, severe-feature criteria (including platelet <100,000, AST/ALT >2x, creatinine >1.1, pulmonary edema, visual/cerebral symptoms), antihypertensive trigger (≥160/110 confirmed within 15 min), magnesium sulfate indication, and delivery timing by gestational age. Recite it before each obstetric medicine block.
On postpartum hemorrhage items, the candidate gives oxytocin as the first response to a suspected retained placenta or genital tract laceration, or orders uterotonics before establishing the cause, and forgets to quantify blood loss and start massive transfusion protocol triggers.
The '4 Ts' (tone, trauma, tissue, thrombin) are memorized as a list but not applied as a decision tree. Candidates also underweight the fact that atony causes ~70-80% of cases, so they skip the systematic examination (bimanual massage, speculum, placental inspection) that the question is testing.
What to do instead
For every PPH stem, verbalize the 4 Ts in order and match each to its bedside test. Memorize the uterotonic sequence (oxytocin → carboprost/misoprostol → methylergonovine, with contraindications) and the transfusion trigger (ongoing hemorrhage with hemodynamic instability, fibrinogen replacement). Practice 15 stems mapping cause to first action.
The candidate interprets a fetal heart rate tracing by pattern name rather than by the NICHD three-tier system, missing that recurrent variable decelerations with minimal variability or a sinusoidal pattern are Category III and require immediate action, while a single prolonged deceleration is managed by intrauterine resuscitation first.
Candidates memorize 'variable = cord compression, late = placental insufficiency' but do not practice classifying tracings into Categories I, II, and III, which is what determines management. They also skip the intrauterine resuscitation sequence (position change, IV fluids, stop oxytocin, oxygen, tocolysis) before deciding on operative delivery.
What to do instead
Drill 30 tracings: for each, assign category, list the defining features, and state the next three actions. Memorize Category III criteria (absent variability with recurrent late or variable decelerations, bradycardia, sinusoidal) and the rule that Category III mandates expeditious delivery after resuscitation attempts.
In gynecologic oncology, the candidate stages endometrial cancer by clinical exam or orders CA-125 to stage ovarian cancer, and treats a borderline ovarian tumor with full staging and adjuvant chemotherapy as if it were epithelial ovarian cancer.
Staging systems are memorized as numbers without the modality that defines each stage. Candidates forget that endometrial cancer is surgically staged (FIGO 2009/2023) and that CA-125 is a monitoring marker, not a staging tool. Borderline tumors are overtreated because their indolent behavior is not distinguished from invasive carcinoma.
What to do instead
Create a staging grid for endometrial, ovarian, and cervical cancer: stage, defining feature, and the test or finding that establishes it. Add a separate row for borderline tumors (surgical staging, fertility-sparing surgery acceptable, no routine adjuvant chemotherapy). Review FIGO 2023 endometrial changes (molecular classification, lymphovascular space invasion).
The candidate answers a PCOS or infertility item by starting clomiphene or metformin without first excluding other causes of anovulation (thyroid disease, hyperprolactinemia, congenital adrenal hyperplasia, Cushing) and without confirming the Rotterdam criteria.
PCOS is treated as a diagnosis of exclusion but candidates apply it as a diagnosis of pattern recognition. They also skip the semen analysis and tubal assessment in the infertility workup before ovulation induction, so they initiate treatment on an incomplete evaluation.
What to do instead
Memorize the Rotterdam criteria (two of three: oligo/anovulation, clinical or biochemical hyperandrogenism, polycystic ovaries on ultrasound) plus the exclusion list. Then memorize the infertility workup order: semen analysis, ovulation assessment, tubal patency, uterine cavity. For each infertility stem, list which workup elements are missing before choosing treatment.
The candidate manages stress urinary incontinence with anticholinergic medication or manages overactive bladder with a midurethral sling, and skips the urodynamic or cystometric distinction between stress, urge, and mixed incontinence before selecting therapy.
Candidates group all incontinence under 'pelvic floor' and do not separate the pathophysiology (urethral hypermobility/sphincter deficiency vs. detrusor overactivity). They also forget that behavioral therapy and pelvic floor muscle training are first-line for both types and that surgery is reserved for stress-predominant disease after conservative failure.
What to do instead
Build a three-column table: stress, urge, mixed - defining symptom, key test (cotton swab test, urodynamics, cystometry), first-line, second-line, surgical option. For each stem, identify the predominant symptom before selecting management. Remember that mixed incontinence is treated starting with the most bothersome component, usually conservative first.
In gynecologic surgery items, the candidate chooses the route (laparotomy vs. laparoscopy vs. vaginal) by diagnosis alone rather than by uterine size, prior surgery, adnexal mass characteristics, and surgeon experience, and ignores the ureter's course relative to the uterine artery during hysterectomy.
Candidates memorize 'fibroids = hysterectomy' or 'ovarian cyst = laparoscopy' without the decision variables. Anatomic questions about the ureter are answered from vague memory rather than the relationship 'ureter passes under the uterine artery at the level of the internal os, ~1.5-2 cm lateral to the cervix.'
What to do instead
For each surgical stem, list the four decision variables before choosing the route. Draw the ureter–uterine artery crossing from memory three times and label the cardinal ligament, paravesical space, and the level of the internal os. Review the laparoscopic entry and trocar complication items separately.
The candidate treats bacterial vaginosis with fluconazole, treats vulvovaginal candidiasis with metronidazole, and manages a positive cervical swab for Chlamydia without partner treatment or a test-of-cure strategy, or screens for cervical cancer with cytology alone in a patient over 30 without HPV co-testing.
Vaginal discharge causes are memorized as a list of organisms without matching the diagnostic test (whiff test, clue cells, pH; KOH prep; NAAT) to the treatment. Screening intervals and the role of HPV testing are confused with diagnostic testing.
What to do instead
Make a matrix: condition, diagnostic finding, first-line regimen, partner treatment, pregnancy considerations, and follow-up. Separately memorize cervical cancer screening intervals (cytology every 3 years, co-testing or primary HPV every 5 years, per current local/national guidance) and the management of abnormal results by risk category.
On ethics and health law items, the candidate answers from personal or cultural preference rather than from the four principles and the local legal framework, for example disclosing a diagnosis to a spouse without the patient's consent, or performing a procedure on a minor or a patient lacking capacity without identifying the legal guardian or obtaining assent.
Ethics is studied as abstract theory, so candidates do not practice applying confidentiality, informed consent, and capacity assessment to concrete clinical scenarios. They also assume their own cultural norms match the legal standard, which is a frequent source of error on Iranian board questions about consent and confidentiality.
What to do instead
Build a decision framework: identify the ethical conflict (autonomy vs. beneficence), the legal rule (consent, confidentiality, mandatory reporting), and the least restrictive action. Practice 10 vignettes requiring you to state who consents, what must be disclosed, and when confidentiality may be breached. Review national regulations on informed consent and medical error reporting.