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Question

Difficulty: HardPreventive Care and Screening

Evaluate the following patient presentations from an ambulatory primary care setting. Map each patient's demographic and clinical history to the single most appropriate, evidence-based preventive care intervention required at their current visit.

  • A 28-year-old primigravida at 29 weeks of gestation who received a tetanus booster injection two years prior following a superficial laceration.Immunization with the tetanus toxoid, reduced diphtheria toxoid, and acellular pertussis vaccine during the current encounter.
  • A 65-year-old male establishing care. He reports a past habit of smoking one pack of cigarettes daily for 15 years, achieving complete cessation on his fortieth birthday.A single lifetime ultrasonographic evaluation of the abdominal aorta.
  • A 40-year-old female whose biological mother received a colorectal adenocarcinoma diagnosis at age 46; the patient has no prior lower endoscopic evaluations.Immediate structural examination of the colon via colonoscopy, with a 5-year surveillance interval.
  • A 55-year-old female who had her uterus and cervix surgically excised a decade ago for symptomatic leiomyomas, with benign surgical pathology.Cessation of all future cervical cancer screening modalities.

Answer

The pregnant patient at 29 weeks requires the Tdap vaccine. The 65-year-old male with a 15 pack-year smoking history requires a one-time AAA screening ultrasound. The 40-year-old female with a high-risk family history of colorectal cancer requires immediate colonoscopy with 5-year intervals. The 55-year-old female post-benign total hysterectomy requires cessation of cervical cancer screening.
Each correct pairing directly reflects current USPSTF and ACIP recommendations. Tdap is mandated in every pregnancy (27-36 weeks). AAA ultrasound is required once for any male 65-75 who has smoked ≥100\geq 100 cigarettes. Colonoscopy begins at age 40 or 10 years before a first-degree relative's early (<60< 60) diagnosis, repeating every 5 years. Total hysterectomy for benign disease is a firm indication to stop cervical cancer screening.

Step-by-Step Solution

1
Evaluate the obstetric patient's immunization status.
Determine that a Tdap booster is indicated.
Guidelines mandate Tdap during every pregnancy between 27-36 weeks to confer passive immunity to the neonate, superseding standard 10-year booster intervals.
2
Analyze the 65-year-old male's smoking history against multiple screening criteria.
Determine that he qualifies for AAA screening but not for lung cancer screening.
He has 'ever smoked' (≥100\geq 100 lifetime cigarettes), satisfying the AAA screening criteria. However, his 15 pack-year history and 25-year cessation interval disqualify him from lung cancer screening (which requires ≥20\geq 20 pack-years and cessation within 15 years).
3
Calculate the indicated start age and interval for colorectal cancer screening in the 40-year-old female.
Determine that screening is past due and requires a 5-year surveillance interval.
A first-degree relative diagnosed at age 46 dictates that screening begin at age 36 (10 years prior to the relative's diagnosis). Because the relative was <60< 60 at diagnosis, the interval is every 5 years.
4
Assess the need for continued cervical cytology in the 55-year-old surgical patient.
Determine that screening should be discontinued.
The patient lacks a cervix and the indication for surgery was benign (leiomyomas), satisfying criteria to safely halt Pap testing.

Key Concept

Application of precise age, exposure, and genetic risk thresholds to select the single most appropriate preventive screening or immunization modality.
Estimated Time:2m 0s
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Topics

Preventive Care and Screening

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