Lungs

Question 1

Beta-2 adrenergic agonist

Answer 1

Bronchodilators and enhance mucus clearance via mucociliary system

Relaxes smooth muscle in respiratory passageways

May also cause vasodilation in muscles.

Commonly used to trat asthma in cats, chronic bronchitis in dogs or hyperkalemia

drugs: terbutaline, albuterol, salmeterol

Most common side effects: tachycardia, increased cardiac contractility and arrhythmia

Question 2

Terbutaline

Answer 2

beta-2 adrenergic agonist

Bronchodilator

Commonly used to treat asthma in cats, chronic bronchitis in dogs or hyperkalemia

Administered orally or parenterally

Common side effects are tachycardia, increased cardiac contractility and arrhythmia

Question 3

Albuterol

Answer 3

beta-2 adrenergic agonist

Bronchodilator

administered via inhaler

Common side effects are tachycardia, increased cardiac contractility and arrhythmia

I.e. albuterol toxicity

Question 4

Methylxanthines

Answer 4

bronchodilator

Inhibit phosphodiesterase and blocking adenosine

believed to inhibit leukotriene synthesis and reduce inflammation

Narrow therapeutic range

Occasionally used to treat pulmonary hypertension and tracheal collapse.

adverse effects are tachycardia, arrhythmia and GI signs

examples of Methylxanthines:

Caffeine and theobromine - toxic to animals