Asthma Flashcards
most common type of asthma?
allergic asthma
antigen exposure to the bronchial mucosa- initiates airway hyperresponsiveness- which phase of asthma?
early asthmatic response
immune activation- which phase of asthma?
early asthmatic response
What immunoglobulin is involved in the early asthmatic response?
IgE
IgE causes what two things to happen in early asthmatic response?
(1) mast cell degradation and (2) inflammatory mediator release
what are the three inflammatory mediators released in the early asthmatic response?
(1) histamine (2) prostaglandins (3) leukotrienes
inflammatory mediators in early asthmatic response cause increase or decreased capillary permeability?
increased
mucosal edema seen in which phase of asthma?
early asthmatic response
bronchial smooth muscle contraction (bronchospasm) is caused by what in the early asthmatic response?
inflammatory mediators
tenacious mucous secretion from mucosal goblet cells with narrowing and obstruction to airway- which phase of asthma?
early asthmatic response
what cells secrete tenacious mucous in early asthmatic response?
mucosal goblet cells
when does late asthmatic response begin?
a few hours after the early response
release of toxic neuropeptides contribute to increased bronchial hyperresponsiveness- which phase asthma?
late asthmatic response
impaired expiration causes air trapping- which phase of asthma?
late asthmatic response
what do toxic neuropeptides contribute to in late asthmatic response?
increased bronchial hyperresponsiveness
what causes air trapping in late asthmatic response?
impaired expiration
hyperinflation distal to obstructions in late asthmatic response is caused by what?
impaired expiration
increased work of breathing seen in which asthma phase?
late asthmatic response
respiratory alkalosis seen in which asthma phase?
late asthmatic response
what is the acid-base imbalance of late asthmatic response?
respiratory alkalosis
increased pH seen in which phase of asthma?
late asthmatic response
Ph is increased or decreased in late asthmatic response?
increased
PaCO2 is increased or decreased in late asthmatic response?*****
decreased
hypoxemia in late asthmatic response further increases WHAT?
hyperventilation
bronchospasms become more and more severe- what asthma phase?
status asthmaticus
with progressive obstruction of expiratory airflow, air trapping becomes more severe- what asthma phase?
status asthmaticus
lungs and thorax become hyperexpanded- what asthma phase?
status asthmaticus
fall in tidal volume with increasing CO2 retention- what asthma phase?
status asthmaticus
what is the acid-base imbalance seen in status asthmaticus?
respiratory acidosis
respiratory acidosis is seen in which asthma phase?
status asthmaticus
respiratory acidosis signals what in asthma response?
respiratory failure
ventilation is severely impaired, little air exchange is taking place, “silent chest”- which asthma phase?
status asthmaticus
tidal volume is increased or decreased in status asthmaticus?
decreased
CO2 retention is increased or decreased in status asthmaticus?
increased