This question-specific review guide is tied to the answer reasoning for a PracticeTestVault item. Use it after you answer the question so the review stays focused on what the prompt actually tested.
What this question is testing
Objective: First trimester ultrasound
Prompt focus: On transvaginal ultrasound, an intrauterine gestational sac should normally first be visualized when the serum beta human chorionic gonadotropin reaches approximately which level?
Why the correct answer works
About 1,500 to 2,000 milli-international units per milliliter
An intrauterine gestational sac is normally seen transvaginally when beta hCG is about 1,500 to 2,000 milli-international units per milliliter.
Why the tempting wrong answer fails
The tempting wrong answer usually loses because it skips the key condition, priority, or evidence in the prompt.
Plain-language takeaway
The discriminatory zone is the beta human chorionic gonadotropin level above which a normal intrauterine pregnancy should be visible. Transvaginally this is generally about 1,500 to 2,000 milli-international units per milliliter.
Simple analogy
Think of first trimester ultrasound like following a short checklist: identify the clue, confirm the rule, and then make the move that fits this exact scenario.
How to review it before a retake
- Underline the command word and name what the question is asking before rereading the choices.
- Compare the correct answer against the closest distractor and write the exact detail that separates them.
- Retest this objective with a fresh question without looking at the rationale first.