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Ch. 20 - Urinary and Reproductive System Infections
Norman-McKay- Microbiology: Basic and Clinical Principles 2nd Edition
Norman-McKay2nd EditionMicrobiology: Basic and Clinical PrinciplesISBN: 9780137661619Not the one you use?Change textbook
Chapter 20, Problem 2

Factors that contribute to vulvovaginal candidiasis include:
a. Low vaginal pH
b. High nitrates in urine
c. Increased blood bilirubin levels
d. Increased estrogen levels
e. Taking a fluconazole drug

Verified step by step guidance
1
Understand that vulvovaginal candidiasis is a fungal infection primarily caused by Candida species, often influenced by changes in the vaginal environment and host factors.
Evaluate each option by considering how it affects the vaginal environment or immune response: for example, low vaginal pH typically inhibits Candida growth, so it is less likely to contribute to candidiasis.
Recognize that increased estrogen levels can promote glycogen deposition in vaginal epithelial cells, which Candida can use as a nutrient source, thus facilitating infection.
Consider that taking fluconazole, an antifungal medication, is used to treat candidiasis rather than cause it, so it is unlikely to be a contributing factor.
Summarize by identifying which factors create a favorable environment for Candida overgrowth, such as increased estrogen levels, and exclude those that do not support fungal proliferation.

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Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Vulvovaginal Candidiasis and Vaginal pH

Vulvovaginal candidiasis is a fungal infection caused mainly by Candida species. A low vaginal pH (acidic environment) typically inhibits Candida growth, so it is not a contributing factor; instead, a higher or neutral pH can promote infection by disrupting normal flora.
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Role of Estrogen in Vulvovaginal Candidiasis

Increased estrogen levels, such as during pregnancy or hormone therapy, promote glycogen accumulation in vaginal epithelial cells. This creates a nutrient-rich environment that supports Candida overgrowth, making elevated estrogen a significant risk factor for vulvovaginal candidiasis.
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Impact of Antifungal Drugs like Fluconazole

Fluconazole is an antifungal medication used to treat candidiasis. Taking fluconazole helps reduce Candida infection rather than contribute to it, so it is not a factor that promotes vulvovaginal candidiasis but rather a treatment option.
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