1. 
   periodic breathing
   [n] - abnormal respiration in which periods of shallow and deep breathing alternate
   Found op http://www.webdictionary.co.uk/definition.php?query=periodic%20breathing
   
   
2. 
   Periodic breathing
   Periodic breathing: Clusters of breaths separated by intervals of apnea (no breathing) or near-apnea. As opposed to normal breathing which is usually regular. Periodic breathing was originally thought to arise from serious neurologic or cardiovascular disease and therefore to carry a poor outlook. I...
   Found op http://www.medterms.com/script/main/art.html?articlekey=10902
   
   
3. 
   periodic breathing
   Cheyne-Stokes respiration noun abnormal respiration in which periods of shallow and deep breathing alternate
   Found op http://wordnetweb.princeton.edu/perl/webwn?s=periodic%20breathing
   
   
4. 
   Periodic Breathing
   A pattern of irregular breathing in which there are pauses for as long as 10 to 20 seconds. This is a common occurrence in newborn infants.
   Found op http://www.pregnology.com/AZ/P/4
   
   
5. 
   Periodic breathing
   Periodic breathing is an abnormal pattern of breathing characterized by oscillation of ventilation between hyperpnea and hypopnea (not hyperpnea and Apnea as in Cheyne-Stokes respiration) with a crescendo-decrescendo pattern in the depth of respirations, to compensate for changing serum partial pre...
   Found op http://en.wikipedia.org/wiki/Periodic_breathing
   
   

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