Document Detail


Chapter 14: Acute severe asthma (status asthmaticus).
MedLine Citation:
PMID:  22794687     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
Acute severe asthma, formerly known as status asthmaticus, is defined as severe asthma unresponsive to repeated courses of beta-agonist therapy such as inhaled albuterol, levalbuterol, or subcutaneous epinephrine. It is a medical emergency that requires immediate recognition and treatment. Oral or parenteral corticosteroids should be administered to all patients with acute severe asthma as early as possible because clinical benefits may not occur for a minimum of 6-12 hours. Approximately 50% of episodes are attributable to upper respiratory infections, and other causes include medical nonadherence, nonsteroidal anti-inflammatory exposure in aspirin-allergic patients, allergen exposure (especially pets) in severely atopic individuals, irritant inhalation (smoke, paint, etc.), exercise, and insufficient use of inhaled or oral corticosteroids. The patient history should be focused on acute severe asthma including current use of oral or inhaled corticosteroids, number of hospitalizations, emergency room visits, intensive-care unit admissions and intubations, the frequency of albuterol use, the presence of nighttime symptoms, exercise intolerance, current medications or illicit drug use, exposure to allergens, and other significant medical conditions. Severe airflow obstruction may be predicted by accessory muscle use, pulsus paradoxus, refusal to recline below 30°, a pulse >120 beats/min, and decreased breath sounds. Physicians' subjective assessments of airway obstruction are often inaccurate. More objective measures of airway obstruction via peak flow (or forced expiratory volume in 1 second) and pulse oximetry before oxygen administration usually are helpful. Pulse oximetry values >90% are less commonly associated with problems although CO(2) retention and a low Pao(2) may be missed.
Authors:
Rachna Shah; Carol A Saltoun
Related Documents :
2978767 - Behavioral and pharmacological dental management of a patient with autism.
20173277 - Doctors' and nurses' explanations for racial disparities in medical treatment.
20670157 - Risk factors for postpartum antihypertensive medication requirement in severe preeclamp...
12025307 - The pregnant orthopaedic patient and medication concerns.
23137617 - Characterization of the elastic-plastic behavior of intermetallic coatings growth on me...
18387707 - Medical response to a radiologic/nuclear event: integrated plan from the office of the ...
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Allergy and asthma proceedings : the official journal of regional and state allergy societies     Volume:  33 Suppl 1     ISSN:  1539-6304     ISO Abbreviation:  Allergy Asthma Proc     Publication Date:    2012 May-Jun
Date Detail:
Created Date:  2012-07-16     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9603640     Medline TA:  Allergy Asthma Proc     Country:  United States    
Other Details:
Languages:  eng     Pagination:  47-50     Citation Subset:  IM    
Affiliation:
Division of Allergy-Immunology, Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


Previous Document:  Chapter 13: Potentially (near) fatal asthma.
Next Document:  Chapter 15: Lessons learned from clinical trials of asthma.