| breath-holding | Voluntary or involuntary cessation of breathing; often seen in young children as a response to frustration. (05 Mar 2000) |
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| breath-holding test | A rough index of cardiopulmonary reserve measured by the length of time that a subject can voluntarily stop breathing; normal duration is 30 seconds or more; diminished cardiac or pulmonary reserve is indicated by a duration of 20 seconds or less. (05 Mar 2000) |