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Asthma characterized by
Inflammation,mucosal secretions ,increased secretions
Asthma diagnosed when NO extrinsic factor can be identified. Result of factors such as emotional stress, exercise or fatigue.
Mast cells that releAse chemical mediators such as eosinophils, leukotrinesbhistamines
The chemical mediators cause
Smooth muscle constriction brnchospasm dilation of blood vessels and tissue swelling AKA edema
Has longer duration but starts later
Age group most intrinsic pt
Intrinsic brought n by
Infection,exercise cold air occupation exposure drugs
Manifestations of asthma
Increase RR,hr,BP,cardiac output insp and exp accessory muscle se ,increase AP diameter, intcostal retractions cough sputum
Decreased tactile and vocal fremitus, hyperresonnance
Chest xray signs
Flat diaphragms increased intercostal spacebradiolucency
Severe persistent asthma treated with
Corticosteroids and long acting B2 adrenergics
Rescue inhalers are
Status asthmatics may get treated with
Mechanical ventilation because ot dosent respond to meds