Which of the following is listed as a patch contraindication?

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The main concept here is how obesity affects the transdermal patch's effectiveness. The patch delivers estrogen through the skin, and in individuals with BMI ≥30, absorption and overall estrogen exposure can be inconsistent. This leads to higher chances of inadequate contraception (breakthrough ovulation) and potentially increased risk of pregnancy, so obesity is a patch-specific contraindication.

Other factors in the choices aren’t patch contraindications in the same way. A 25-year-old without risk factors or a non-smoker do not have contraindications to the patch. Postpartum within 6 weeks is a general warning for estrogen-containing methods due to higher venous thromboembolism risk, but the item’s best patch-specific contraindication focus is on BMI ≥30 because of the pharmacokinetic issues and failure rates seen with obesity.