breath-holding test

breath-hold·ing test

a rough index of cardiopulmonary reserve measured by the length of time that a person who is a study subject can voluntarily stop breathing; normal duration is 30 seconds or longer; diminished cardiac or pulmonary reserve is indicated by a duration of 20 seconds or less.

breath-hold·ing test

(breth-hōld'ing test) A rough index of cardiopulmonary reserve measured by the length of time that a person can voluntarily stop breathing; normal duration is 30 seconds or longer; diminished cardiac or pulmonary reserve is indicated by a duration of 20 seconds or less.

单词	breath-holding test
释义	breath-holding test breath-hold·ing test a rough index of cardiopulmonary reserve measured by the length of time that a person who is a study subject can voluntarily stop breathing; normal duration is 30 seconds or longer; diminished cardiac or pulmonary reserve is indicated by a duration of 20 seconds or less. breath-hold·ing test (breth-hōld'ing test) A rough index of cardiopulmonary reserve measured by the length of time that a person can voluntarily stop breathing; normal duration is 30 seconds or longer; diminished cardiac or pulmonary reserve is indicated by a duration of 20 seconds or less.
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