The Effect of Chunghyul-Dan on Hyperventilation-Induced Carbon Dioxide Reactivity of the Middle Cerebral Artery in Normal Subjects: A Dose-Dependent Study

<div>Study design timeline. Measurements were repeated four times, at least 1 week apart, according to the multiple-crossover design. CHD, chunghyul-dan; hr, hour; HR, heart rate; BP, blood pressure; TCD, transcranial Doppler sonography; hypervent., hyperventilation.</div>

Evidence-Based Complementary and Alternative Medicine

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Figure 1

Figure 1: The Effect of Chunghyul-Dan on Hyperventilation-Induced Carbon Dioxide Reactivity of the Middle Cerebral Artery in Normal Subjects: A Dose-Dependent Study 

Figure 1 | The Effect of Chunghyul-Dan on Hyperventilation-Induced Carbon Dioxide Reactivity of the Middle Cerebral Artery in Normal Subjects: A Dose-Dependent Study 