The most common side effect of IUD insertion is

Tripura CHO - 2021

Obstetrics & Gynaecology

Easy

Appeared in: Tripura CHO - 2021

Explanation

Bleeding is the most frequently reported side effect following IUD insertion, particularly with copper IUDs.
This side effect can manifest as heavier menstrual periods (menorrhagia), longer duration of bleeding, or spotting between periods (intermenstrual bleeding), especially in the first 3-6 months.
According to medical literature, abnormal bleeding is a leading cause for the discontinuation of IUD use, accounting for 10–20 percent of all removals.

Option B: While pain and cramping are also very common, especially during and shortly after insertion, changes in bleeding patterns are generally more persistent and are cited as the primary complaint leading to IUD removal.
Option C: Pelvic infection is a serious but relatively uncommon complication. The risk is highest in the first 20 days post-insertion and is significantly reduced with proper patient screening and aseptic insertion technique.
Option D: IUDs are highly effective at preventing pregnancy, which significantly lowers the absolute risk of an ectopic pregnancy compared to using no contraception. Therefore, it is a rare event, not a common side effect.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Common side effects of Intrauterine Contraceptive Devices (IUDs) as background academic context rather than a clinical decision trigger.
Nurses must counsel patients that irregular bleeding and spotting are expected for the first 3-6 months and usually improve over time. Managing expectations is key to IUD continuation.
It's crucial to differentiate between expected side effects (spotting, cramping) and warning signs (fever, severe pain, foul-smelling discharge), which require immediate medical evaluation.
What if? If a patient has pre-existing heavy menstrual bleeding (menorrhagia), a copper IUD is relatively contraindicated. A levonorgestrel-releasing IUD (LNG-IUS) would be a much better choice as it is therapeutic for heavy bleeding.

How to Approach the Question

First, identify the keywords in the question: "most common," "side effect," and "IUD insertion."
This is a factual recall question. Access your knowledge about the different types of contraceptive methods and their associated effects.
Recall the common side effects associated with IUDs: changes in bleeding, pain/cramping, risk of expulsion, and risk of infection.
Differentiate between the side effects based on their frequency of occurrence. Both bleeding and pain are very common, but medical texts identify bleeding as the single most frequent complaint.
Evaluate the less common but more severe risks like pelvic infection and ectopic pregnancy to confirm they are not the most common side effects, even though they are important potential complications.

Concept Tested & Keywords

Concept Tested: Common side effects of Intrauterine Contraceptive Devices (IUDs)
Stem keywords: IUD insertion, side effect, most common
Lead-in keywords: most common
Negative lead-in flag: false

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