What is the most common cause of subinvolution?
Retained placental fragments
Infection
Uterine fibroids
Multiparity
The Correct Answer is A
The correct answer is choice A. Retained placental fragments are the most common cause of subinvolution. Subinvolution is a condition where the uterus does not return to its normal size after childbirth. Retained placental fragments prevent the uterus from contracting properly and cause prolonged bleeding and infection.
Choice B is wrong because infection is not the most common cause of subinvolution, but it can be an aggravating factor. Infection can cause inflammation and interfere with the healing of the uterine lining.
Choice C is wrong because uterine fibroids are not the most common cause of subinvolution, but they can be a predisposing factor. Uterine fibroids are benign tumors that can distort the shape of the uterus and impair its contraction.
Choice D is wrong because multiparity is not the most common cause of subinvolution, but it can be a predisposing factor. Multiparity means having given birth more than once, which can weaken the uterine muscles and reduce their ability to contract.
Normal ranges for uterine involution are as follows:
• Uterus weight: decreases from about 1000 g at delivery to about 60 g at six weeks postpartum.
• Uterus height: decreases from about 20 cm above the pubic bone at delivery to about 12 cm at one week postpartum, and then descends into the pelvis by six weeks postpartum.
• Uterus size: decreases from about 20 times its normal size at delivery to about its normal size at six weeks postpartum.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
The correct answer is A. Decreased hematocrit and hemoglobin levels.This is because postpartum hemorrhage can lead to hypovolemia which can cause a decrease in hematocrit and hemoglobin levels.Increased white blood cell and platelet counts (option B) are not expected findings in postpartum hemorrhage.Decreased prothrombin time and partial thromboplastin time (option C) are not expected findings in postpartum hemorrhage.Increased fibrinogen and fibrin degradation products (option D) are not expected findings in postpartum hemorrhage.
Correct Answer is D
Explanation
Formula feeding increases risk for infection in infants.This is because breast milk contains antibodies and other germ-fighting factors that help protect the baby from infections, such as ear infections, diarrhea, respiratory infections and meningitis.Breast milk also provides ideal nutrition and is easily digested by the baby.
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