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Resonant, brassy, and harsh, a barking cough is part of a complex of signs and symptoms that characterize croup syndrome, a group of pediatric disorders marked by varying degrees of respiratory distress. Croup syndrome is most common in boys and most prevalent in the fall; it may recur in the same child.
A barking cough indicates edema of the larynx and surrounding tissue. Because children’s airways are smaller in diameter than those of adults, edema can rapidly lead to airway occlusion — a life-threatening emergency. (See Managing a barking cough.)
Ask the child’s parents when the barking cough began and what other signs and symptoms accompanied it. When did the child first appear to be ill? Has he had previous episodes of croup syndrome? Did his condition improve upon exposure to cold air?
Spasmodic croup and epiglottiditis typically occur in the middle of the night. The child with spasmodic croup has no fever, but the child with epiglottiditis has a high fever of sudden onset. An upper respiratory tract infection typically is followed by laryngotracheobronchitis.
Observe the child for signs of respiratory distress. Note use of sternal or intercostal retractions or nasal flaring. Observe his skin for cyanosis and diaphoresis. Take his vital signs, noting respiratory rate and depth. Although stridor can be heard without a stethoscope, auscultate his lungs. Decreased breath sounds and crackles may be present.
Partial obstruction of the upper airway caused by aspiration of foreign body first produces sudden hoarseness, then a barking cough and inspiratory stridor. Other effects of this life-threatening condition include gagging, tachycardia, dyspnea, decreased breath sounds, wheezing and, possibly, cyanosis.
Epiglottiditis, a life-threatening disorder, has become less common since the use of influenza vaccines. It occurs nocturnally, heralded by a barking cough and a high fever. The child is hoarse, dysphagic, dyspneic, and restless and appears extremely ill and panicky. The cough may progress to severe respiratory distress with sternal and intercostal retractions, nasal flaring, cyanosis, and tachycardia. The child will struggle to get sufficient air as epiglottic edema increases. Epiglottiditis is a true medical emergency.
Also known as viral croup, acute laryngotracheobronchitis is most common in children between 9 and 18 months old and usually occurs in the fall and early winter. It initially produces low to moderate fever, runny nose, poor appetite, and infrequent cough. When the infection descends into the laryngotracheal area, barking cough, hoarseness, and inspiratory stridor occur.
As respiratory distress progresses, substernal and intercostal retractions occur along with tachycardia and shallow, rapid respirations. Sleeping in a dry room worsens these signs. The patient becomes restless, irritable, pale, and cyanotic.
Acute spasmodic croup usually occurs during sleep with the abrupt onset of a barking cough that awakens the child. Typically, he doesn’t have a fever but may be hoarse, restless, and dyspneic. As his respiratory distress worsens, the child may exhibit sternal and intercostal retractions, nasal flaring, tachycardia, cyanosis, and an anxious, frantic appearance. The signs usually subside within a few hours, but attacks tend to recur.
Don’t attempt to inspect the throat of a child with a barking cough unless intubation equipment is available. If the child isn’t in severe respiratory distress, a lateral neck X-ray may be done to visualize epiglottal edema; a negative X-ray doesn’t completely rule out epiglottal edema. A chest X-ray may also be done to rule out lower respiratory tract infection. Depending on the child’s age and degree of respiratory distress, oxygen may be administered. Rapid-acting epinephrine and a steroid should be considered.
Be sure to observe the child frequently, and monitor the oxygen level if used. Provide the child with periods of rest with minimal interruptions. Maintain a calm, quiet environment and offer reassurance. Encourage the parents to stay with the child to help alleviate stress.
Teach the parents how to evaluate and treat recurrent episodes of croup syndrome. For example, creating steam by running hot water in a sink or shower and sitting with the child in the closed bathroom may help relieve subsequent attacks. The child may also benefit from being brought outside (properly dressed) to breathe cold night air.
Read excerpts from these other book chapters related to Cough:
Copyright Details: Signs & Symptoms: A 2-in-1 Reference for Nurses, Copyright © 2008 Williams & Wilkins.
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More About This Book:
Title: Signs & Symptoms: A 2-in-1 Reference for Nurses Authors: Springhouse Publisher: Lippincott Williams & Wilkins Copyright: 2007 ISBN: 1-58255-318-1 
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