Usage
When a woman takes COCP, the hormones in the pills prevent both ovulation and shedding of the endometrium (menstruation). Traditionally, COCPs are packaged with 21 active (hormone-containing) pills and 7 placebo pills. During the week of placebo pills, withdrawal bleeding occurs and simulates an average 28-day menstrual cycle. The placebo pills are not required for pregnancy protection, and with any monophasic COCP the placebo pills may be discarded, and the next pack of active pills may be started to prevent the withdrawal bleeding. With bi- and tri-phasic pills, skipping the placebo week results in a sudden change in hormone levels, which may cause irregular spotting or flow. (Monophasic pills offer the same dose of estrogen and progestogen whereas multiphasic pills have varying doses from day to day; see formulations for details.) Recently, several pharmaceutical companies have gained FDA approval to package COCPs for the intended use of reducing the frequency of or eliminating withdrawal bleeding. Clinical indications
Extended or continuous use of COCPs has been used for many years to treat endometriosis, dysmenorrhea, and menstruation-associated symptoms. Some studies have suggested that women who experience premenstrual-type symptoms during the placebo (hormone-free) week of traditionally packaged COCPs may experience significantly fewer symptoms when placed on extended cycle COCP regimens.More recently, personal preference to avoid menstruation has also become a common reason for use. Personal preference is the most common reason extended cycle or continuous use COCPs are prescribed to adolescents.
Tachycardia (from the Greek takhys, meaning "swift", and kardia, meaning heart) means a swift heart rate.By this definition, junctional ectopic tachycardia is an abnormally swift heart rhythm due to cells firing within the heart near the AV node. References


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