Contraindications for using oral contraceptives?

KPSC Staff Nurse - 2016

Pharmacology

Easy

Appeared in: KPSC Staff Nurse - 2016

Explanation

Thrombophlebitis, a condition involving blood clot formation in a vein, is an absolute contraindication for combined oral contraceptives (COCs).
The estrogen component in COCs increases the hepatic production of several blood clotting factors, such as fibrinogen.
This prothrombotic state elevates the risk of venous thromboembolism (VTE), including deep vein thrombosis (DVT) and pulmonary embolism (PE), by approximately three- to five-fold compared to non-users.
Therefore, any personal history of thrombophlebitis or thromboembolic disorders precludes the use of estrogen-containing contraceptives.

Option B: Urinary tract infections (UTIs) are not a contraindication for oral contraceptive use. While some hormonal changes can affect the urinary tract, it is not considered a reason to avoid OCPs.
Option C: Ulcerative colitis (UC) is an inflammatory bowel disease and is not an absolute contraindication for OCPs. The main concern is related to malabsorption during severe flare-ups with diarrhea, which could reduce pill efficacy.
Option D: Menorrhagia (heavy menstrual bleeding) is a common indication for prescribing oral contraceptives, not a contraindication. COCs are effective in reducing menstrual flow and regulating cycles.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Contraindications for Oral Contraceptives as background academic context rather than a clinical decision trigger.
A key nursing responsibility is conducting a thorough health history to screen for absolute contraindications to COCs, such as a history of VTE, stroke, heart attack, breast cancer, liver disease, or uncontrolled hypertension.
Patient education is paramount. Nurses must teach the 'ACHES' warning signs, emphasizing the need to seek immediate medical attention if any occur, as they could indicate a life-threatening clot.
What if? If a patient has a high risk for VTE (e.g., a known thrombophilia like Factor V Leiden) but requires contraception, the nurse should anticipate the provider recommending a progestin-only method (like the mini-pill, depot injection, or hormonal IUD) or a non-hormonal method, as these do not carry the same estrogen-related clot risk.

How to Approach the Question

First, identify the core of the question, which is asking for a contraindication—a reason not to use a medication.
The medication in question is 'oral contraceptives,' which most commonly refers to combined estrogen-progestin pills.
Recall the major risks associated with combined oral contraceptives. The most well-known serious risk is an increased chance of blood clots (thromboembolism).
Evaluate each option: A) Thrombophlebitis is inflammation of a vein due to a blood clot. This directly relates to the primary risk of OCPs. B) UTIs are infections, not related to the hormonal mechanism of OCPs. C) Ulcerative colitis is an inflammatory bowel disease; while absorption might be an issue, it's not a primary contraindication. D) Menorrhagia is heavy bleeding, which OCPs are often used to treat.
Based on this analysis, thrombophlebitis is the only absolute contraindication among the choices.

Concept Tested & Keywords

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E6 Pharmacology Katzung 16e p. 1143-1145