BACKGROUND AND PURPOSE Cerebral blood flow (CBF) autoregulation is impaired in patients with acute bacterial meningitis: this may be caused by cerebral arteriolar dilatation. We tested the hypothesis that CBF autoregulation is recovered by acute mechanical hyperventilation in 9 adult patients with acute bacterial meningitis. METHODS Norepinephrine was infused to increase mean arterial pressur...

Objective: To evaluate the effect of hyperventilation during a repeated sprint training on a cycle ergometer. Method: Seven cyclists performed two training sessions (10 maximal sprints of 10 s, with 60 s of rest), one with free ventilatory frequency and another one with hyperventilation (the participants breathed 60 cycles per minute during the last 30 s of recovery). Power, fatigue index and b...

Pacemakers with a rate-responsive function, based on calculation of ventilatory minute volume, may induce tachycardia in patients who undergo hyperventilation during general anaesthesia. If hyperventilation is desired, it is recommended that the pacemaker is reprogrammed in order to avoid tachycardia. If the programming device is not available, a magnet may be placed over the pacemaker site to ...