Friday, February 22, 2013

Abnormal Uterine Bleeding: Diagnosed and Treatment

What is Abnormal Period 
The menstrual history is critical to the diagnosis of abnormal bleeding. The first day of the last menstrual periods should be determined. Age of onset of menses (menarche) is also obtained, and the patient should be asked to quantify whether she considers  her flow to be light, moderate, or heavy; some assessment of menstrual blood loss should be obtained if the patient states that her flow is heavy. 

The patient may be asked to estimate the total number of pads or tampons used during a menstrual period or to estimate the frequency with which they require changing. In addition, patients should be asked about any bleeding between periods, and an effort should be made to determine whether the bleeding, even if regular, is associated with ovulation. The latter can be assessed by inquiring about the presence of regular moliminal symptoms, including premenstrual breast tenderness, bloating, premenstrual syndrome, and dysmenorrhea.
 
Unlike quantification of menstrual blood loss, self-reports of moliminal symptoms have been shown to be reliable indicators of ovulatory status. The complete absence of theses symptoms, as well as other cycle-specific symptoms (such midcycle ovulatory pain or mucous changes), should alert the physician to the possibility of anovulatory bleeding, which may increase the patient’s  risk for adverse outcomes, such as infertility or endometrial neoplasia. Every patient presenting with abnormal bleeding should be asked to keep a prospective menstrual calendar, noting whether there is no bleeding.

Abnormal Bleeding Diagnosis
A history of prolonged heavy menses of more than 7 days´ duration with normal cycle interval suggest the diagnosis of menorrhagia.  A history of consistent moliminal symptoms should be present before the bleeding is assumed to be ovulatory. This distinction is important is important because regular but anovulatory cycles carry a greater risk of endometrial adenocarcinome. A history negative for previous bleeding diathesis has been shown to obviate the need for hematologic evaluation of clotting disorders.

Historical and clinical stigmata of possible thyroid dysfunction, including heat and cold intolerance, diarrhea or constipation, tachycardia, and thyromegaly, should also be determined. Although the pelvic examination in women with menorrhagia is usually normal, bimanual  examination may reveal the presence of uterine fibroids or large cervical polyp. Documentation of ovulation is important in any case of presumed menorrhagia in which ovulation cannot be documented by the presence of consistent moliminal symptomatology. In these cases ovulation can be documented by basal body temperature charting or by midluteal progesterone determination. 

Alternatively, particularly in cases of suspected anovulatory bleeding, endometrial biopsy may be performed to rule out occult endometrial hyperplasia or neoplasia. This is especially important in high risk population, such as obese women, patients over the age of 35, or those with a prolonged history of anovulatory bleeding. In addition, a complete blood count is important in order to document possible concurrent anemia. Thyroid function studies, including thyroxine and thyroid-stimulating hormone (TSH) are indicated in many patient with clinical stigmata suggestive of possible thyroid dysfunction. Similarly, coagulation studies and a bleeding time determination may be indicated in patients with a history of bleeding following dental extraction or epistaxis and bruising.

Abnormal Bleeding Treatment
A logical initial choice is scheduled antiprostaglandin (prostaglandin synthetase inhibitor /PGSI/) therapy during the menstrual period. This drugs increase the tromboxane to prostacyclin ratio in menstrual blood and have been shown to decrease mean MBL by up to 50 percent.

Exogenous synthetic sex steroids have also been successfully used for treatment of menorrhagia. We used medroxyprogesteronacetate (Provera) for 10 to 14 days oral tablets, such as 5 to 30 mg. Similar success has been documented with oral contraceptives. The contraceptive effects, improvement in associated dysmenorrhea, and the wide margin of safety of low-dose oral contraceptive make these highly desirable choices for nonsmoking women.


Adapted from: http://www.gyne.cz

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