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Pathophysiology of Asthma

Precipitating Factors:

Allergens, Stress,

Sudden change in

temperature,

medications

Precipitating

Factors: Age,

Genetics, Gender

/S: Wheezing, muscle

reathing, nasal flaring,achypnea, tachycardia

/S: tachypnea,

achycardia

/S: production of thick,

white to yellow sputum

O2 therapy

Medications: inhaled

steroids, b-2 adrenergic

agents, bronchodilators

Patent airway

Deep breathing and

coughing exercise

Adequate rest

GOOD PROGNOSIS

Individual continues to compensate

Hypoxemia

Hypoventilation

Respiratory acidosis

Severe hypoxemia

Death

S/S: cyanosis

IgE stimulants

Mast Cell degranulation

Increase production of Histamine Vasospasms

Asthma Attack 

Increased airway resistance Inflammation

Increased lung compliance Lungs become hyperinflated

Impaired mucullary function Increase mucus production

Altered gas exchange decreased PO2

Respiratory Alkalosis

If not treated If treated

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Pathophysiology of Asthma