Questions E88E89

The Big Asthma Lie

Holistic Treatments to get rid of Asthma

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It is customary today to classify antiarrhythmic drugs according to their mechanism of action. This is best defined by intracellular recordings that yield monophasic action potentials. In the accompanying figure, the monophasic action potentials of (A) slow response fiber (SA node) and (B) fast Purkinje fiber are shown. Tor each description that follows, choose the appropriate drug with which the change in character of the monophasic action potential is likely to be associated..

a Digoxin b. Amiodarone c. Mexiletine d. Nifedipine e. Propranolol f. Flecainide g. Diso pyramids h. Verapamil

188. Moderate phase 0 depression and slow conduction; prolonged repolarization

189. Affects mainly phase 3, prolonging repolarization

190, A 60-year-old male with chronic obstructive lung disease is given ipratropium as part of his therapeutic regimen. What is the mechanism of action of ipratropium?

a. I nhibi t i on o f airway m usearin i c recep tors b. lnhibi t i on o f 5-1 ipoxygenase c. Breakdown of mucus d. Lnhi bi t i on o f me d iator re Ie ase e. Lnhi bi t i on o f pho^ phodiesterase f. Activation of jS-adrenergic receptors

191. A one-year-old male develops decreased breath sounds, and wheezing during a febrile episode, which is relieved by albuterol. What is the mechanism of action of albuterol?

a. Lnhi bi t i on o f ai rw ay m use ar ini c recept o rs b. L nhi bi t i on o f 5-lipoxygen ase c. Breakdown of mucus d. Inhibition of mediator release e. Inhibition of phosphodiesterase f. Activation of [i-adrenergic receptors

192. A 10-year-old female with allergy-induced asthma is treated with cromolyn What is the mechanism of action of cromolyn?

a. Inhibition of airway muscarinic receptors b. Inhibition of 5-Li poxygen ase c. Bre a kd own of m ucu s d. Inhibition of mediator release e. Lnhi bi t i on o f p hosp hod i e>,te rase f. Activation of [i-adrenergic receptors

193, Which of the following is unlikely to occur with low concentrations of nitroglycerin?

a. Decreased heart rate b Decreased end-diastolic blood pressure c. Decreased myocardial oxygen demand d. L") ec re ase d p re J oad and af te r I o ad e. Increas ed co t o na ry bl ood fI ow

194, A 40-year-old male with markedly elevated cholesterol, diagnosed as having heterozygous familial hypercholesterolemia, is treated with cholestyramine. What is the mechanism of action of cholestyramine?

a. Sequestration of bile acids b. Dec reased hepati c se ere ti on o f VLD L

c. Increased lipoprotein lipase activity d. Inhibition of HMG-CoA reductase e. Decreased oxidation of plasma lipids

195, A 35-year-old male with markedly elevated plasma triglyceride and LDL levels, and low plasma HDL levels, is treated with gemfibrozil. What is the mechanism of action of gemfibrozil?

a. Sequestration of bile acids b. Dec re a se d h e pat i c se ere ti on o f VLD L

c. Increased lipoprotein lipase activity d. Inhibition of HMG-CoA reductase e. Decreased oxidation of plasma lipids

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Coping with Asthma

Coping with Asthma

If you suffer with asthma, you will no doubt be familiar with the uncomfortable sensations as your bronchial tubes begin to narrow and your muscles around them start to tighten. A sticky mucus known as phlegm begins to produce and increase within your bronchial tubes and you begin to wheeze, cough and struggle to breathe.

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