Tolazoline is a medication that is used to treat a variety of medical conditions, primarily in the cardiovascular and respiratory systems. It is an alpha-adrenergic agonist that can be used to treat hypotension, low blood pressure, pulmonary edema, and congestive heart failure. It can also be used to reduce airway resistance in the treatment of asthma and chronic obstructive pulmonary disease (COPD). Tolazoline is available as an injection, tablet, or syrup and is typically taken by mouth or injected into a vein.
Tolazoline is a medication used to treat a condition in newborn babies called persistent pulmonary hypertension (PPHN). PPHN is a serious condition that occurs when a baby's blood pressure in the arteries between the heart and the lungs (pulmonary arteries) is too high. This can make it hard for the baby to breathe and get enough oxygen.
Tolazoline works by relaxing the muscles in the walls of the pulmonary arteries. This helps to widen the arteries and lower blood pressure. It is not entirely clear how tolazoline works, but it appears to act in a few ways. It may directly relax the muscles in the blood vessels, and it may also increase the release of histamine, a substance that also helps to widen blood vessels. Additionally, tolazoline may block the effects of certain hormones that cause blood vessels to narrow.