health screening
covered10 questions- Smoking, lipids, blood pressure, diabetes are modifiable.
- Age, sex, ethnicity, family history are not — and they raise the urgency of the rest.
- Under 18.5 / 18.5–24.9 / 25–29.9 / 30+.
- BMI measures mass, not fat — pair it with waist circumference.
- One reading is a prompt, not a diagnosis.
- Recheck on separate occasions; lifestyle first at this level.
- Three of five: waist, triglycerides, LOW HDL, blood pressure, fasting glucose.
- LDL is a risk factor but NOT a criterion.
- A test that is often abnormal in cancer is not a screening test.
- Screening needs specificity in someone with no symptoms — LDH and bilirubin rise in too many other things.
- First-degree relative with colorectal cancer: start at 40, or ten years before their diagnosis age — whichever is earlier.
- The population age does not apply.
- Defer immunization for moderate-to-severe acute illness.
- Mild colds, antibiotics and family allergy history are NOT contraindications.
- Live vaccines — MMR, varicella, rotavirus, intranasal influenza — are avoided in pregnancy and immunosuppression.
- A mild illness without fever is NOT a reason to postpone any vaccine.
- Abstinence eliminates risk; condoms are the best method for someone sexually active and the only one covering both pregnancy and infection.
- Vaccines exist for hepatitis B and HPV only, and no symptoms does not mean no infection.
- Testicular cancer peaks around 15-35, not in old age.
- It is the cancer that breaks the age rule — which is why self-examination is taught to young men.
Coronary risk factors separate into modifiable targets and fixed factors that raise the priority of modifying the others.
BMI categorizes weight relative to height but does not distinguish fat from lean mass.
Hypertension is diagnosed from averaged readings across multiple occasions, not from a single measurement.
Metabolic syndrome is defined by markers of insulin resistance, which produce high triglycerides and low HDL rather than high LDL.
Screening looks for disease in people without symptoms, so it demands specificity: a test that is frequently abnormal for benign reasons generates more harm through false positives than benefit. Tumor markers are substances produced by tumor cells or by the body in response to them, and only a few are specific enough to screen with. Prostate-specific antigen is used for prostate cancer screening, though it rises in benign prostatic hyperplasia and prostatitis too, which is why the decision to test is discussed rather than assumed. Cervical cytology is the strongest example of screening, because it identifies dysplasia before malignancy develops and so prevents cancer rather than merely finding it earlier. Other markers are used for monitoring rather than screening — CA-125 in ovarian cancer, alpha-fetoprotein and beta-hCG in germ cell tumors, carcinoembryonic antigen in colorectal disease. Many routine tests are non-specifically abnormal in malignancy — lactate dehydrogenase, alkaline phosphatase, calcium, bilirubin — and none of them screens for anything. The most effective cancer screening remains structural rather than serological: colonoscopy, mammography and cervical cytology.
Screening intervals exist to catch disease during the long asymptomatic phase, and colorectal cancer is well suited to this because adenomatous polyps take years to become malignant and can be removed when found. Risk is not uniform. A first-degree relative raises it substantially, and the standard response is to move the start earlier rather than to change the test. Inflammatory bowel disease and inherited syndromes such as Lynch or familial adenomatous polyposis shift it earlier still and are followed on their own schedules. Population starting ages have moved over time — from 50 to 45 for average risk — so the durable knowledge is the risk-adjustment rule rather than any single figure.
Live attenuated vaccines replicate to produce immunity and can cause disease in an immunocompromised or pregnant client, while inactivated vaccines cannot.
Only barrier methods reduce both pregnancy and infection risk, and most sexually transmitted infections are asymptomatic.
Testicular cancer is the most common solid malignancy in men in their late teens through mid-thirties, which sets it apart from the pattern of rising incidence with age that holds for most cancers. The usual presenting sign is a painless lump or swelling in the testis, sometimes with a sensation of heaviness. Because outcomes are generally very good even where disease has spread, the decisive factor is that the change is noticed and investigated rather than watched. Undescended testis, including one corrected in childhood, and a family history both raise risk, but the majority of cases occur without either — so teaching is directed at all young men rather than a screened subgroup.
How they trap you here (9)
- Family history tempts students who read 'discussed in counseling' as 'changeable'.
- Free-entry. The usual error is failing to convert feet and inches to total inches.
- The options bracket the correct answer with over- and under-reaction, which is exactly how screening findings get mishandled.
- The LDL row is the whole item — it is the most familiar lipid number and the one that does not count.
- Two distractors are laboratory values that genuinely are abnormal in cancer, which is precisely why they are chosen — a student who has learned that these values rise in malignancy will read the association as a screening role. That inference is the misconception the item exists to break, and it matters in practice, because clients ask for blood tests to check for cancer and the nurse has to explain why there is not one. The thiamine option has no association at all and gives the item a floor.
- Every option names a real screening age, so nothing can be eliminated as invented, and the item turns entirely on whether the student adjusts for risk. The average-risk age is the strongest trap because it is the number most students have memorized and it is correct — for a different client. Matching the relative's diagnosis age catches the student who does adjust for family history but applies the adjustment in the wrong direction.
- Option (e) is the source's practical point and the commonest real-world error — postponing for a minor illness feels cautious and is how a child ends up under-immunized.
- Option (e) tests whether the student knows which infections are actually vaccine-preventable rather than that vaccines exist in this area, which is the source's own distractor. Option (f) is the belief that keeps people from being screened.
- The source item used a negative stem, which this deliberately does not: negative phrasing tests reading as much as knowledge and is discouraged in current item-writing practice. The misconception is instead surfaced as a question from the client, which is how it actually presents. The strongest distractor generalizes the age-risk rule that is correct for nearly every other cancer — a student reasoning soundly from a good heuristic lands on it, and that is the belief worth breaking.