DustinRN Mar 14, 2004 nitric oxide??? what does that have to do with anything?NO does help with hypoxia by limiting the lungs' vasoconstrictive response to hypoxia. I think it relaxes the vascular endothelium and dilates the pulmonary vessels.I do remember that long term NO therapy oxidizes iron and causes methemoglobinemia, which inhibits the blood's oxygen-carrying capacity.These are the only things I can remember about NO in regards to the respiratory system. 0 Likes
Tenesma Mar 14, 2004 sorry about my response regarding nitric oxide... but in truth, you wouldn't use nitric oxide for bronchospasm.... but you would use Heliox... 0 Likes
Brenna's Dad Mar 15, 2004 Heliox being less dense and therefore creating less resistance to flow. 0 Likes
Law of Fives Mar 22, 2004 The past few articles I've read in regard to using NO to treat bronchspasm did not show NO to be effective in alleviating bronchoconstriction. In fact, NO usually had deleterious effects including increased bronchial blood flow, exudation and edema, as well as direct cytotoxic effect on airway epithelial cells all of which can contribute to advancing the bronchospasm in the opinion of the researcher.Good point Brenna's Dad, Heliox = helium plus oxygen at various ratios - the more helium used in the mixture the less dense, and there fore more effective at delivering oxygen beyond areas of bronchoconstriction. I have not come across any info on the role of helium as a bronchodilator.Likewise, I have not found any information on the receptor selecitvity of varying dosages of epinephrine. BUT, i'm still searching Have a good day 0 Likes
Tenesma Mar 22, 2004 helium isn't a bronchodilator - but due to its lower density it can carry albuterol past spastic lung tissue for better spread and quicker alleviation of the symptomsbeta-selectivity at low-dose of epinephrine is nicely portrayed in this image - literature sources include goodman & gilman, stoelting, etc.. as well as pubmed...http://www.mc.uky.edu/pharmacology/instruction/decor/ar/epiab.jpg 0 Likes
Law of Fives Mar 23, 2004 Thanks for posting that link Tenesma. I followed it back and printed off the entire section of Adrenergic Pharmacology - very helpful 0 Likes
versatile_kat Mar 23, 2004 law of fives ... would you mind posting the page you got to for adrenergic pharmacology. The webpage I'm going to is telling me it doesn't exist. Thanks! 0 Likes
Law of Fives Mar 26, 2004 http://www.mc.uky.edu/pharmacology/instruction/pha824ar/PHA824ar.html 0 Likes
versatile_kat Mar 26, 2004 http://www.mc.uky.edu/pharmacology/instruction/pha824ar/PHA824ar.htmlThanks a lot! :) 0 Likes
