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Difficulty: Very hardPreventive Care and Screening

Review the following four distinct ambulatory patient presentations. For each clinical scenario, select the single most appropriate, guideline-concordant preventive intervention.

  • 28-year-old pregnant patient at 34 weeks gestation. During her prior pregnancy 18 months ago, she received both the Tdap and maternal respiratory syncytial virus (RSV) vaccines.Administer the Tdap vaccine today; withhold the RSV vaccine as it is not indicated in subsequent pregnancies.
  • 42-year-old premenopausal woman with a history of surgically excised lobular carcinoma in situ (LCIS). She had a negative screening mammogram one month ago and desires maximal breast cancer risk reduction.Counsel regarding the risks and benefits of initiating tamoxifen therapy for chemoprevention.
  • 68-year-old man who quit smoking exactly 14 years ago after a 45 pack-year history. His most recent low-dose computed tomography (LDCT) of the chest was 3 years ago and was negative.Order an LDCT of the chest today; advise the patient that he will age out of this screening next year.
  • 38-year-old asymptomatic man presenting for a new patient evaluation. His mother was diagnosed with sporadic colorectal adenocarcinoma at age 46.Refer for a screening colonoscopy immediately, and advise that future surveillance should occur at 5-year intervals.

Answer

The correct matching aligns each complex patient presentation with its precise, guideline-specific preventive care step, highlighting maternal vaccine limits, chemoprevention in LCIS, LDCT cessation timing, and aggressive CRC screening in early-onset family history.
Each clinical scenario requires precise application of current USPSTF and ACIP guidelines. The pregnant patient requires only Tdap because the maternal RSV vaccine is not repeated in subsequent pregnancies. The premenopausal woman with LCIS benefits from tamoxifen for breast cancer chemoprevention. The 68-year-old former smoker requires his annual LDCT now, but will age out of the screening window next year when he reaches 15 years post-cessation. The 38-year-old man requires immediate colonoscopy (10 years prior to his mother's diagnosis at 46) with an accelerated 5-year follow-up interval.

Step-by-Step Solution

1
Evaluate the pregnant patient's prior vaccine history.
Patient had the RSV vaccine in a prior pregnancy.
ACIP states RSV is given once per lifetime during pregnancy, whereas Tdap is required during every pregnancy regardless of prior intervals.
2
Assess the premenopausal patient with LCIS.
Patient is a candidate for chemoprevention with tamoxifen.
LCIS is a high-risk marker; tamoxifen reduces invasive disease risk and is uniquely approved for premenopausal women, unlike raloxifene.
3
Calculate the former smoker's exact quit duration.
Patient quit 14 years ago.
LDCT is required annually until exactly 15 years of smoking cessation have elapsed. He needs a scan this year and will cease screening next year.
4
Determine the colon cancer screening threshold for the asymptomatic 38-year-old.
Initiate screening immediately with 5-year intervals.
A first-degree relative diagnosed at age 46 dictates that screening starts at age 36 (10 years prior) and recurs every 5 years, bypassing average-risk age 45 guidelines.

Key Concept

Nuanced application of preventive care guidelines, including lifetime maternal vaccine limits, breast cancer chemoprevention agents by menopausal status, lung cancer screening cessation criteria, and high-risk colorectal cancer screening intervals.
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Topics

Preventive Care and Screening

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