Practical Considerations of Clinical Oxygen Lack

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Abstract
WHEN confronted with a patient whose problem may in part be due to oxygen lack, the physician often bases his opinion upon the presence or absence of dyspnea and cyanosis, forgetting that these important signs are but two of the many changes due to anoxia. He may not realize that either or both may be present even though oxygenation is adequate, and he may not appreciate that both may be absent even when oxygen lack is severe. In its classic form anoxia may be recognized at a glance, but in other circumstances, not infrequently encountered in practice, the most elaborate . . .

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