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Symptomatic treatment of the cough in whooping coughBettiol S, Thompson MJ, Roberts NW, Perera R, Heneghan CJ, Harnden A SummaryTreatment of the cough in whooping coughWhooping cough, or pertussis, is an infectious bacterial disease. It affects infants and small children, and can be life-threatening in unimmunised infants younger than three months of age. Infants with whooping cough experience severe bouts of coughing and vomiting which can lead to dehydration and difficulty breathing. Routine vaccination can prevent illness and protect infants and children against death and admission to hospital. Whooping cough also affects older children and adults, and new vaccine strategies are being developed to improve coverage, as neither immunisation nor natural infection result in lifelong immunity. New improved laboratory methods and higher awareness amongst doctors have helped improve surveillance of community outbreaks. These methods have also helped improve diagnosis as antibiotics can limit the course of the disease if given in the early stage of the illness. In the later stages, antibiotics have little individual benefit and treatment with corticosteroids, salbutamol, pertussis specific immunoglobulin (antibodies to increase the body's resistance) or antihistamines has been used in an attempt to reduce the cough while the disease runs its course. We found that current trials did not provide enough evidence to determine whether these drugs can reduce the cough in whooping cough.
This is a Cochrane review abstract and plain language summary, prepared and maintained by The Cochrane Collaboration, currently published in The Cochrane Database of Systematic Reviews 2010 Issue 1, Copyright © 2010 The Cochrane Collaboration. Published by John Wiley and Sons, Ltd.. The full text of the review is available in The Cochrane Library (ISSN 1464-780X).
This version first published online:
October 20. 2003 AbstractBackgroundThe worldwide incidence of whooping cough (pertussis) has been estimated at 48.5 million cases and nearly 295,000 deaths per year. In low-income countries, the case-fatality rate among infants may be as high as 4%. Much of the morbidity of whooping cough in children and adults is due to the effects of the paroxysmal cough. Cough treatments proposed include corticosteroids, beta 2-adrenergic agonists, pertussis-specific immunoglobulin, antihistamines and possibly leukotriene receptor antagonists (LTRAs). ObjectivesTo assess the effectiveness and safety of interventions to reduce the severity of paroxysmal cough in whooping cough in children and adults. Search strategyWe searched the Cochrane Central Register of Controlled Trials (CENTRAL) (The Cochrane Library 2009, issue 1), which contains the Cochrane Acute Respiratory Infections Group's Specialised Register and the Database of Abstracts of Reviews of Effects (DARE); MEDLINE (1950 to March 2009); EMBASE (1980 to March 2009); AMED (1985 to March 2009); CINAHL (1982 to March 2009) and LILACS (March 2009). Selection criteriaRandomised controlled trials (RCTs) and quasi-RCTs of any intervention (excluding antibiotics and vaccines) to suppress the cough in whooping cough. Data collection and analysisTwo review authors (SB, MT) independently selected trials, extracted data and assessed the quality of each trial. The primary outcome was frequency of paroxysms of coughing. Secondary outcomes were frequency of vomiting, frequency of whoop, frequency of cyanosis (turning blue), development of serious complications, mortality from any cause, side effects due to medication, admission to hospital and duration of hospital stay. Main resultsTen trials were included of varying sample sizes (N = 9 to 135) from high-income countries. Study quality was generally poor. Included studies did not show a statistically significant benefit for any of the interventions. Diphenhydramine did not change coughing episodes; the mean difference of coughing spells per 24 hours was 1.9 (95% confidence interval (CI) - 4.7 to 8.5). One study on pertussis immunoglobulin reported a possible mean reduction of -3.1 whoops per 24 hours (95% CI -6.2 to 0.02) but no change in hospital stay (-0.7 days) (95% CI -3.8 to 2.4). Dexamethasone did not show a clear decrease in length of hospital stay (-3.5 days) (95% CI -15.3 to 8.4) and salbutamol showed no change in coughing paroxysms per 24 hours (-0.22) (95% CI -4.13 to 3.69). Authors' conclusionsInsufficient evidence exists to draw conclusions about the effects of interventions for the cough in whooping cough. |