Most women are aware that high blood pressure during pregnancy, gestational hypertension, is a problem that can effect the baby and requires treatment. When a woman's blood pressure is lower than the average, while not a problem, can also be the cause of alarm.

The average or "normal" blood pressure is considered to be 120/80. The higher number, systolic pressure, represents the pressure in the arteries each time the heart beats or contracts. The lower number, diastolic pressure, is the pressure in the arteries between each beat. Hypotension is the term given to low blood pressure.

An individual person's normal blood pressure is dependent on many factors including their age, sex and fitness. A finding of a lower than average blood pressure in an individual who is otherwise in a good state of health is a positive sign. It is frequently found in people who a physically fit and may be the result of regular exercise. It is a sign of an efficient cardiovascular system. It can also be a sign that the person is relaxed and at ease during the consultation. It is not considered a medical condition and does not require treatment.

During pregnancy it is possible to experience a sudden drop in blood pressure that causes the person to faint. This is usually preceded by dizziness, sweating and nausea. If you are aware that you have a normally low blood pressure you are more vulnerable to this experience. It is more likely to happen during hot weather, if you have skipped a meal or if you are not drinking enough fluids. It is important that you recongnise the symptoms and act accordingly before you faint. You will need to sit or, if possible, lie down until the symptoms pass. It will only take a few minutes. If you do not recognise the symptoms and do faint, the act of fainting will cause the blood pressure to normalise and you will regain consciousness. To prevent a reoccurrence, keep your fluids up, eat regularly and stay inside during the hottest part of the day.

Article prepared by Akal Khalsa

Akal Khalsa is a Sydney based midwife and provides midwifery services including: homebirths, pre-conception consultations, childbirth preparation, nutritional advise and breastfeeding support.

For more information Contact Akal.