Blood pressure or hypertension is the strength of the blood forcing opposed to the barrier. Every time the heart beats, they pump the blood through the arteries that come up to rising the maximum blood pressure if the heart stiffening and is pumping the blood. Hypertension or high blood pressure is exactly raises the risk of coronary heart illness or heart attack and stroke or brain attack. Hypertension is determined by the elderly people as a blood pressure which is more than or equal to 140 mmHg if the pressure is up to the climax if the heart stiffen and pumps the blood, named systolic pressure. If more than or equal to 90 mmHg if the heart is relax among heart stiffening and pumping of the blood, named as diastolic pressure. If a woman had a present hypertension or creates hypertension earlier from 20^th week of pregnancy, this is recognized as chronic hypertension. Lower than 3 % of women suffering from this condition. Several factors of hypertension during pregnancy involve pregnancy-induced hypertension or called as toxemia or preeclampsia. Most women suffering from chronic hypertension also creates PIH that come up to the point of possible fatal condition.

Almost of the risk is not rising for all the women having gentle chronic hypertension when without other complications. Although when hypertension is fatal, if other conditions are present including diabetes, or when the pregnancy-induced hypertension are formed within the chronic hypertension, risks are increasing for both the mother and the baby. These risks might involve, but are not restricted to blood pressure rising, congestive heart malfunctioning, bleeding of the brain, kidney infection, placental abruption, and blood mass disorder. Risks to the fetus and newborn vary on the harshness of the illness and might involve, but not restricted to intrauterine growth restriction that reduce the fetal development because of lacking in placental blood flow, pre-term birth or earlier from 37 weeks of pregnancy, and stillbirth.

In handling this kind of situation, prenatal care and careful observation of blood pressure and several factors are significant to pregnant women. If women have hypertension they frequently require to constantly taking their antihypertensive medicine. The doctor might transfer them to a much secured antihypertensive medicine throughout their pregnancy. Laboratory examinations might be done on a standard basis to know the stages of several blood and urine substances similar to hypertension. Other examinations to observe heart and kidney function might also be done. Fetal examination might start in the 2^nd trimester and might involve ultrasound, nonstress examinations that measures fetal rate in correspond to the motion of fetal, biopsical profile, which is an examination that joint to ultrasound and nonstress examination, and Doppler flow studies which is a kind of ultrasound that uses sound waves to measure the flow of the blood.