Related Experiment Video
Updated: Aug 4, 2026

Bronchial Thermoplasty: A Novel Therapeutic Approach to Severe Asthma
Published on: November 4, 2010
Effect of levalbuterol on prehospital patient parameters
1Volusia County Emergency Medical Service, Department of Human Factors and Systems, Embry-Riddle Aeronautical University, Daytona Beach, FL 32120, USA. AMDEMS@aol.com
Abstract:
This study was performed to determine if levalbuterol improves dyspnea as assessed by prehospital clinical parameters. All EMS patients >or=16 years old given nebulized levalbuterol over 6 months were included in this prospective, open-label work. Data collected included demographics, initial pulse rate (P), respiratory rate (R), patient report of respiratory distress (S), and peak expiratory flow (PF). Outcome variables were P, R, S, and PF after levalbuterol use. Statistical analysis used t tests, with P
More Related Videos
Related Concept Videos
Adrenergic Agonists: Mixed-Action Agents
Ephedrine and pseudoephedrine lack a catecholamine group, making them less susceptible to degradation by metabolic enzymes. They have increased oral bioavailability and lipophilicity, resulting in a longer duration of action. Their response is reduced by...
Adrenergic Agonists: Therapeutic Classification
Vasopressor or pressor agents: They increase blood pressure and function as cardiac stimulants. Examples include endogenous catecholamines (norepinephrine and dopamine) and synthetic agents (phenylephrine).
Bronchodilators: β2-agonists can relax bronchial muscles and widen airways. They are commonly used for treating obstructive pulmonary...
Adrenergic Agonists: Therapeutic Uses
Emergency and Intensive Care Unit (ICU) applications: Pressor agents increase blood pressure, heart rate, and contractility in shock and organ failure situations. Dopamine can induce vasodilation and stimulate adrenoceptors. Endogenous catecholamines are effective in treating cardiogenic shock. α2-agonists like clonidine can reverse anesthesia-induced hypertension.
Allergies and anaphylaxis:...
Adrenergic Antagonists: Pharmacological Actions of β-Receptor Blockers
Heart Failure Drugs: β-Blockers
Antiasthma Drugs: β2-Adrenoceptor Agonists
One class of bronchodilators includes β2-adrenoceptor agonists. These agents target the β2-adrenoceptors located on bronchial smooth muscle cells. By stimulating these receptors, β2-agonists induce relaxation in these...

