Vaginal pH

Definition

Vaginal pH is a measure of how acidic or basic the vaginal environment is, typically ranging from 3.8 to 4.5 in healthy women of reproductive age. It plays a crucial role in maintaining the balance of normal microbiota and preventing infections.

5 Must Know Facts For Your Next Test

1. Normal vaginal pH ranges between 3.8 and 4.5.
2. A higher vaginal pH can indicate bacterial vaginosis or other infections.
3. Lactobacilli are the predominant bacteria that help maintain an acidic vaginal pH.
4. Changes in vaginal pH can affect the growth of pathogens such as Candida and Gardnerella vaginalis.
5. Hormonal changes, such as those during menstruation or menopause, can impact vaginal pH.

Review Questions

• What is the normal range for vaginal pH in healthy women?
• Which type of bacteria primarily helps maintain an acidic vaginal environment?
• How can an elevated vaginal pH influence susceptibility to infections?

Related terms

Lactobacilli: Bacteria that produce lactic acid, helping to maintain the acidic environment of the vagina.

Bacterial Vaginosis: An infection characterized by an imbalance in the normal bacterial flora of the vagina, often associated with a higher vaginal pH.

Candida: A genus of yeast that can cause infections in humans; overgrowth can occur when the normal balance of microbiota is disrupted.