Category: O

Pacemaker Therapy

Pacemaker Therapy

The heart is a unique structure in the human body in that it combines both mechanical and electrical properties in the same cell. Normal electrical function in the heart includes the firing of a dominant pacemaker, an area of heart tissue that initiates heartbeat. The dominant pacemaker is usually in the area of the heart [...]

September 20, 2011 More
Ovarian Cyst

Ovarian Cyst

An ovarian cyst is a fluid-filled sac that can occur within or on the surface of the ovary. Many women will develop an ovarian cyst at some time during their lives. Most cysts are benign (not cancerous), not dangerous, resolve on their own, and require no treatment. Ovarian cysts are generally painless, causing discomfort only [...]

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Fluorescent Stained ovarian carcinoma cells

Ovarian Cancer

Ovarian cancer refers to a heterogeneous (diverse) group of diseases. The most common form of ovarian cancer, the epithelial ovarian cancers, tends to occur in women after the age of 50. This type of ovarian cancer was highly publicized with the diagnosis and death of actress and comedienne, Gilda Radner. it is this form of [...]

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Osteoporosis and Osteopenia

Osteoporosis and Osteopenia

Osteoporosis, or porous bone, is a disease characterized by low bone mass and reduced bone strength, with increased risk of fractures. The term osteopenia means low bone mass, which is one aspect of osteoporosis. Osteopenia is often used to describe a mild form of osteoporosis because osteoporosis is diagnosed primarily by low bone density. Several [...]

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Osteoarthritis

Osteoarthritis

Osteoarthritis, or degenerative joint disease, is the most common form of arthritis in the United States, affecting 15.8 million Americans. More than 15% of women over the age of 80 have symptomatic osteoarthritis of the knee. Osteoarthritis is a leading cause of disability and thus has a significant economic impact. Although there is no cure [...]

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Oral Health

Oral Health

This entry focuses on oral health during pregnancy. The imbalance of female sex hormones during pregnancy has been implicated in changes in the oral cavity. Many of the changes can be minimized or prevented with good oral hygiene and regular oral health care. PREGNANCY GINGIVITIS Gingival (gum) changes become noticeable from the second month of [...]

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Oral Contraception

Oral Contraception

Oral contraceptives (birth control pills) are either combined estrogen and progestin or progestin-only formulations that prevent conception. Estrogen is the female hormone secreted by the ovary in the first half of the menstrual cycle. Progesterone is the hormone produced by the ovary in the second half of the cycle. The pill’s estrogens and progestins (substances [...]

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Oophorectomy

Oophorectomy, also called ovariectomy, is the surgical removal of one or both ovaries. According to the Centers for Disease Control and Prevention (CDC), 491,000 oophorectomies and salpingo-oophorectomies (surgical removal of the fallopian tubes along with the ovaries) were performed in the United States in the year 1998. Removal of the ovaries is often done along [...]

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Oligomenorrhea

Oligomenorrhea

Oligomenorrhea is infrequent menstrual bleeding that occurs at intervals greater than 5 weeks or 35 days. Normal menstrual bleeding occurs every 28 days with a normal range of 21-35 days. The duration of flow is 4.5 days with a range of 2-7 days. Normal blood loss at menses is 35 ml with a range of [...]

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Occupational Therapist

Occupational Therapist

Occupational therapy is the holistic health profession that works with individuals to attain, restore, and maintain function in daily life activities and meaningful life roles such as student, homemaker, hobbyist, and worker. The word “occupation” in the context of occupational therapy refers to activities that are valued by that individual in his or her culture. [...]

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Obsessive-Compulsive Disorder

Obsessive-Compulsive Disorder

Obsessions and compulsions are fairly common mental phenomena that most people have experienced, but they can become severe enough to interfere with one’s functioning. At this point they are known as a disorder. Obsessions are repeated intrusive thoughts, usually unwelcome to the thinker, and may include ideas of a harmful, violent, sexual, or religious nature. [...]

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Obesity

Obesity

Obesity is a rapidly growing problem in the United States today, reaching epidemic proportions. According to the Centers for Disease Control and Prevention, during 1999-2000, 64% of Americans were overweight or obese, with 23% actually defined as being obese (see definitions below). Thirty percent of children and adolescents during the same time period were found [...]

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