What should be used to clean the vagina in cases of fungal vaginitis?

　　Vaginal candidiasis is a common vulvovaginal inflammation caused by infection with *Candida albicans*. Clinically, the vagina may be irrigated with a 5% sodium bicarbonate solution, followed by intravaginal insertion of nystatin suppositories until symptoms resolve. The specific procedure is as follows:

　　1. Clean the external genitalia with plain water, or perform vaginal irrigation after bathing.

　　2. Prepare the solution: Dissolve 25 g of sodium bicarbonate powder (commonly known as baking soda) completely in 500 mL of purified water.

　　3. Fill the prepared solution into an irrigation device and assume a squatting position.

　　4. Irrigation: Gently insert the tip of the irrigation device along the lateral vaginal wall to a depth of 9–10 cm; then manually compress the device to allow the solution to flow into the vagina. Continue irrigation for 3–5 minutes, then withdraw the device.