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Sympathomimetic drugs are used to treat cardiac arrest and low blood pressure, or even delay premature labor, among other things. These drugs can act through several mechanisms, such as directly activating postsynaptic receptors , blocking breakdown and reuptake of certain neurotransmitters, or stimulating production and release of catecholamines.
Patients who are suffering from chronic inflammatory lung diseases such as asthma or COPD may be treated with medication targeted to induce more smooth muscle relaxation in the lungs and less contraction of the heart, including first-generation drugs like salbutamol (albuterol) and later-generation medications in the same class.
Salbutamol, also known as albuterol and sold under the brand name Ventolin among others, [1] is a medication that opens up the medium and large airways in the lungs. [8] It is a short-acting β 2 adrenergic receptor agonist that causes relaxation of airway smooth muscle . [ 8 ]
Interactions with such drugs can cause either an unintended increase in blood pressure or potentiate an increase in blood pressure. [2] Finally, in drugs with both alpha and beta blocking properties, such as carvedilol and labetalol, interactions with other alpha or beta blockers can exaggerate a decrease in blood pressure. [2]
When combined with inhaled steroids, β adrenoceptor agonists can improve symptoms. [1] [2] In children this benefit is uncertain and they may be potentially harmful. [2]They should not be used without an accompanying steroid due to an increased risk of severe symptoms, including exacerbation in both children and adults. [3]
It can both raise and lower your blood pressure—depending on how dehydrated you are, how long you’ve been dehydrated, and if you have other health conditions, explains Oral Waldo, M.D., a ...
The precise function of these receptors has not been established. However, all β adrenergic agonist drugs can produce a significant cardiovascular effect in some patients, as measured by pulse rate, blood pressure, and restlessness symptoms, and/or electrocardiographic (ECG).
Wrapping up warm, eating well and exercising indoors will help keep your blood pressure levels stable this winter.