Vasa previa does have an association with a low-lying placenta, which may be associated with previous uterine surgery including prior cesarean, maternal smoking, multiple pregnancy (twins, triplets, etc), and also with assisted conception (artificial insemination, in-vitro fertilization, etc).

The answer to this is unknown. There are no lifestyle changes that affect the incidence of vasa previa. However, vasa previa does have an association with a low-lying placenta, which may be associated with prior cesarean, maternal smoking, multiple pregnancy, and also with assisted conception.

The theory about this that makes most sense is called Trophotropism. The easiest way to explain this is to make a comparison to a plant. A plant will lean towards the sun to get the light it needs to survive. Since the lower segment of the uterus is not as nourishing as the upper segment, the placenta will grow to reach more nourishing tissue. The placental mass will erode away from the cervix, but the vessels can't. This also explains the velamentous insertion of the cord.

Possibly. Unlike a placenta previa the vessels involved in a vasa previa are unlikely to erode away (which is how a placenta previa seemingly "moves"). There is a chance that this vessel will become thrombosed (plugged). This would take away the risk of fetal bleeding, but whether the baby would tolerate this depends on what proportion of the blood flows through this vessel.

Most likely the transverse lie is related to the low-lying placenta. When the placenta occupies the lower portion of the uterus, it prevents the head from engaging (going into the lower segment of the uterus, and the pelvis). Therefore, the baby may not be head first. The position of the vasa previa baby may also reflect an attempt by the baby to avoid compression of the velamentous vessels.

Published data on vasa previa mortality shows a rate of 30-100%. Data suggests that survival is practically 100% if the diagnosis of vasa previa is made prenatally, and the patient is delivered by elective cesarean section. We have 2 prenatally diagnosed babies on record that died. However, they died of other complications of pregnancy such as prematurity and placenta previa. Vasa previa can be diagnosed prenatally. The time has come when physicians should look actively for it.

With a vasa previa not associated with abnormal placental implantation (some form of placental previa) there should be no increase in third trimester bleeding. Bleeding from a vasa previa only occurs if the vessel is torn or ruptures. No. There is nothing that we actively do to stop bleeding from a placenta previa. Bleeding from a placenta previa occurs because the attachment of the placenta to the uterus breaks (peels off).

Yes, velamentous cord insertion is also dangerous when the unprotected blood vessels are not crossing the cervix.

Though it is common to deliver with a VCI without detriment to the baby, VCI carries risk even when not a vasa previa. VCI may be allowed a trial of labor if the vessels are away from the cervix. However, close continuous monitoring is mandatory. The vessels could rupture, and also pressure on the vessels could lead to fetal compromise. This can be detected early by monitoring.

Muscle tone in the oral cavity tends to decrease with age (2, 14, 21, 22, 23, 24). Many people who are not particularly overweight start to snore in middle age simply because this is when our muscles lose their youthful firmness unless regularly exercised. Our upper throat muscles are no exception and, if their tone is poor, slack tissue at the back of the throat is prone to vibrate in the in-breath causing the snoring noise.

One of the most common types of hair loss in women is female pattern thinning (FPT). With age, the hair tends to "thin out" in generalized areas such as the sides of the head. This type of FPT affects more women as they pass through the stages of menopause.

CDI itself does not cause infertility but some of the diseases that cause CDI occasionally do so. If you truly have CDI (and not dipsogenic DI) it is perfectly safe to take dDAVP before and during pregnancy. It does not affect fertility or the unborn fetus, provided you remember to drink only when you are thirsty. Your serum sodium level will normally be lower (by 5 mEq/l) during pregnancy. Before having DI my menstrual period was normal. After one year of having DI, my menstrual period stopped.

There is a high prevalence of several known breast cancer risk factors in Marin. Compared to the average California population, women in Marin have more risk factors including higher socioeconomic status, later childbearing, fewer children, more frequent alcohol consumption, and higher levels of education. Based on this information, we would expect Marin County to have a somewhat higher breast cancer incidence rate than other geographic regions with fewer risk factors.

A combination of biological, social, cultural and economic factors contribute to women's increased vulnerability to HIV infection. In particular, gender inequalities prevent women from asserting power over their own lives and controlling the circumstances that increase their vulnerability to infection, particularly in the context of sexual relationships. Women are also physiologically more susceptible to becoming infected with HIV than men.

The major risk factors for bladder cancer are smoking and exposure to certain industrial chemicals. Limited evidence suggests that drinking more fluids and eating more vegetables may lower the risk of bladder cancer. Risk is increased by several factors that cannot be easily modified: menarche before 12 years of age, nulliparity (a female that has not borne offspring) or first birth at 30 years or older, late age at menopause, and a family history of breast cancer.

Exam of your blood vessels using x-rays. The doctor inserts a small tube into the blood vessel and injects dye to see the vessels in the x-ray. A lubricated enema tube is gently inserted into your rectum. Barium flows into your colon. An x-ray is taken of the large intestines. Removal of a small piece of tissue to check for health problems. There are different types of biopsies. Exam of the lungs.

MEN, unfortunately, experience a more dramatic, specific pattern of hair loss commonly termed "Male Pattern Baldness." This loss is caused by dihydrotestosterone (DHT). DHT is the resulting product of direct contact between the enzyme 5-alphareductase (normally found in the skin and scalp) and the hormone testosterone. DHT binds to receptor sites on the scalp and hair follicles, interacting and interrupting the normal chain of events involved in continual healthy hair growth.

Researchers believe that women are biologically more susceptible to HIV infection from heterosexual sex than men. The female genital tract has a greater exposed surface area than the male genital tract; therefore women may be prone to greater risk of infection with every exposure. Male-to-female HIV transmission is estimated to be twice as likely as female-to-male transmission in a single act of vaginal intercourse.

Poverty and the reliance on men for economic support compound women's risk of HIV infection. Women might engage in unsafe sex or commercial sex work as a means of survival or to support their families. Women's financial and material dependence on men often makes it difficult or impossible for them to take control of their sexual relationships.

Poor diet, excess weight, smoking and physical inactivity are significant risk factors for cancer, diabetes, heart disease and stroke. Existing scientific evidence suggests that about one-third of cancer deaths in the United States each year are due to poor nutrition and physical inactivity factors, including being overweight.