In more severe cases, in-vitro fertilization with intracytoplasmic sperm injection may be used. Intentional induction
Retrograde ejaculation can be deliberately induced by squeezing the urethra at the base or applying pressure to the perineum during orgasm. The retrograde-ejaculated sperm goes into the bladder and is excreted with the next urination. Contraception
In certain cultures, such as in the Oneida Community, retrograde ejaculation is performed as a form of primitive male birth control (coitus saxonicus). However, the practice is not considered a reliable method compared to most modern types of birth control. Besides the  lack of protection from STDs, the technique itself can be hard to execute correctly during the act of coitus, especially if the male does not fully understand the anatomy involved. Many doctors also do not recommend coitus saxonicus due to the risk of putting pressure on the pudendal nerve, which can cause numbness in the penis. Taoism
Taoists and some fields of alternative medicine recommend and teach deliberate retrograde ejaculation as a way of "conserving the bodys energy". It was believed that retrograde ejaculation caused the sperm to travel into the head and nourish the brain, or that energy is conserved physically by keeping the sperm (and thereby, the "intelligence" that created it) in the body. However, there are other Taoist perspectives on the general subject of ejaculation and techniques that do not involve retrograde ejaculation (see Taoist sexual practices). See also
Aspermia
Ejaculatory duct obstruction
Hypospermia
Internal urethral sphincter
Spermaturia

Notes


== External links ==
Potassium bicarbonate (IUPAC name: potassium hydrogencarbonate, also known as potassium acid carbonate) is the inorganic compound with the chemical formula KHCO3. It is a white solid. Production and reactivity
It is manufactured by treating an aqueous solution of potassium carbonate with carbon dioxide:
K2CO3 + CO2 + H2O → 2 KHCO3Decomposition of the bicarbonate occurs between 100 and 120 °C (212 and 248 °F):

2 KHCO3 → K2CO3 + CO2 + H2OThis reaction is employed to prepare high purity potassium carbonate. Uses
Food and drink
This compound is a source of carbon dioxide for leavening in baking. It can substitute for baking soda (sodium bicarbonate) for those with a low-sodium diet, and it is an ingredient in low-sodium baking powders.As an inexpensive, nontoxic base, it is widely used in diverse application to regulate pH or as a reagent. Examples include as buffering agent in medications, an additive in winemaking. Potassium bicarbonate is often found added to club soda to improve taste, and to soften the effect of effervescence. Fire extinguishers
Potassium bicarbonate is used as a fire suppression agent ("BC dry chemical") in some dry chemical fire extinguishers, as the principal component of the Purple-K dry chemical, and in some applications of condensed aerosol fire suppression. It is the only dry chemical fire suppression agent recognized by the U.S. National Fire Protection Association for firefighting at airport crash rescue sites. It is about twice as effective in fire suppression as sodium bicarbonate.