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Difficulty: MediumClinical Preventive Services and Screening

A 58-year-old woman comes to the clinic for a comprehensive health maintenance evaluation. She has a history of HIV infection, which is managed with antiretroviral therapy. Her most recent CD4 T-lymphocyte count from last week was 150/mm³. She went through menopause at age 52. During the review of systems, she mentions having a single episode of light vaginal spotting three weeks ago but has had no further bleeding. She has a 30 pack-year smoking history and currently smokes one pack of cigarettes daily. She is asking what tests and vaccines she should receive to optimize her health. Which of the following is the most appropriate recommendation for this patient?

  1. Initiate annual screening with low-dose computed tomography of the chestAnswer
  2. B
    Administer the live-attenuated measles, mumps, and rubella vaccine
  3. C
    Defer diagnostic evaluation of her vaginal bleeding for 6 months
  4. D
    Screen for ovarian cancer using a serum CA-125 level and transvaginal ultrasound
  5. E
    Withhold the recombinant zoster vaccine due to her CD4 count

Answer

Initiate annual screening with low-dose computed tomography of the chest
The most appropriate recommendation among the choices provided is to initiate annual screening with low-dose computed tomography (LDCT) of the chest. The United States Preventive Services Task Force (USPSTF) Grade B recommendation states that adults aged 50 to 80 years who have a 20 pack-year smoking history and currently smoke (or have quit within the past 15 years) should undergo annual lung cancer screening with LDCT. This 58-year-old patient with a 30 pack-year history who continues to smoke meets these criteria perfectly. Providing comprehensive preventive care requires addressing these high-yield screening opportunities during health maintenance visits.

Step-by-Step Solution

1
Evaluate the patient's age and smoking history against lung cancer screening guidelines.
The patient is 58 years old, has a 30 pack-year smoking history, and is a current smoker.
The USPSTF recommends annual low-dose computed tomography (LDCT) for adults aged 50 to 80 years who have a 20 pack-year smoking history and currently smoke or quit within the past 15 years. She meets all criteria.
2
Assess the safety of immunizations based on the patient's HIV status and CD4 count.
The patient has a CD4 count of 150/mm³, indicating severe immunosuppression.
Live-attenuated vaccines (like MMR) are absolutely contraindicated when CD4 < 200/mm³. However, inactivated or recombinant vaccines (like the recombinant zoster vaccine) are safe and indicated.
3
Determine the appropriate triage for the patient's reported vaginal spotting.
The patient has new-onset postmenopausal bleeding.
Any postmenopausal bleeding requires prompt diagnostic evaluation (e.g., endometrial biopsy or transvaginal ultrasound) to rule out endometrial cancer. It should never be observed.

Key Concept

Clinical Preventive Services and Screening Guidelines
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Topics

Clinical Preventive Services and Screening

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