Nihon Kyōbu Shikkan Gakkai zasshi
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Hypoxemia is an important issue for those who manage patients with respiratory failure. Pulse oximetry is a non-invasive method for monitoring arterial oxygen saturation. ⋯ However, finger probes are not suitable for long-term monitoring: they interfere with the activities of daily life and are unstable because of finger movement. Smaller and more comfortable devices may be developed in the near future.