Causes of Low Blood Pressure
To understand the causes of low blood pressure, we must first understand the conditions that are reducing the blood volume (reducing the cardiac output) by a significant amount, are responsible for decreasing blood pressure.
Dehydration is the most common causes in reducing the blood pressure. It is more marked when it comes with nausea, vomiting and diarrhea as a result of gastroenteritis. Vomiting and diarrhea make a person prone to losing large amounts of fluid, which in turn decreases the blood pressure to significant levels.
There are many other causes of dehydration, such as losing excessive amount of body fluid in the form of sweating, in hot climate.
You might take dehydration to be something that is negligible, but you must know that prolonged lowering of blood pressure due to dehydration, can be very dangerous, as it can lead to kidney failure, acidosis (increases levels of acid in blood), coma and sometimes, even death.
Moderate or severe bleeding has the tendency to severely deplete the blood volume, causing the blood pressure to drop down acutely. The bleeding here can result from trauma, such as a road traffic accident, surgical complications or from some abnormalities of the gastrointestinal system, such as bleeding due to ulceration or tumors. Severe conditions such as the rupture of abdominal aortic aneurysm, can lead to severe bleeding, which can lead to death in a matter of minutes.
There are some organs inside the body which if inflamed, can cause a rapid drop in blood pressure. This can be seen in conditions such as acute pancreatitis, where the fluid leaves the blood vessels, in order to enter the inflammation site around the pancreas.
Since the world is in a grip of diseases, there are medications that are being used to treat these diseases. Unfortunately, there are some drugs that result in low blood pressure, as one of their feared side effects. These drugs are generally used to combat hypertension such as calcium channel blockers, beta blockers, ACE inhibitors and diuretics. Also, some of the medications that are being used to treat Parkinson’s disease and impotence also cause a drop in blood pressure.
The elderly and people suffering from heart failure have lost the ability to pump adequate quantity of blood. This makes them susceptible to develop a decrease in blood pressure. Another cause of weakened heart muscles is one or repeated heart attacks. Also, there are some conditions because of which the ability of the heart to pump becomes weakened is by ingesting medications which are toxic to the heart, viral infections of the muscular layer of the heart, a condition called Myocarditis and diseases involving the valves of the heart.
If you are an athlete and you notice a drop in your blood pressure, you must consider it to be a good sign rather than something dangerous. This is because athletes have a healthy heart which requires low pumping in normal situations.
This briefly summarizes the causes of low blood pressure