Objective. To compare the rate of respiratory decline using percent normal forced vital capacity (% FVC) measurements before and after posterior spinal fusion.

目的。使用目前常用的用力肺活量(FVC)指标来判断脊柱后路融合手术后呼吸功能的降低情况。

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Epinephrine increases respiratory rate and tidal volume, and thereby reduces alveolar carbon dioxide content in normal subjects.

肾上腺素增加呼吸频率和潮气量，故可降低正常人的肺泡含量。

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His blood pressure, heart rate, and respiratory rate are within normal limits.

血压、心率和呼吸频率均在正常范围。

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