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This study examined the usefulness of a pulse oximeter in hepatic digital subtraction angiography (DSA) with oxygen administration for breath holding. Oxygen saturation and dissociation times were measured using a pulse oximeter. Twenty-eight patients inhaled oxygen at a rate of 3 liters/min through a nasal tube. Saturation times ranged from 0 to 140 seconds to achieve arterial oxygen-hemoglobin saturation of almost 100%. Dissociation times ranged from 0 to 600 seconds after oxygen termination.

Usefulness of a Pulse Oximeter for Enhancing Breath Holding in Hepatic Subtraction Angiography