mechanical ventilation was performed after intubation.
Blood gas levels were aimed to be kept at normocapnic
levels; PaC[O.sub.2] = 35-45 mmHg.
In a study comparing hypercapnic and normocapnic
COPD patients, the six-minute walk distance was found to be shorter in hypercapnic patients (39).
Two different gas mixtures were employed in this study; (i) normoxic normocapnic
gas: 21% [O.sub.2], 5.5% C[O.sub.2] balanced with [N.sub.2] and (ii) hypoxic normocapnic
gas: 3% [O.sub.2], 5.5% C[O.sub.2] balanced with [N.sub.2] .
With quantitative normocapnic
([CBF.sub.0]) and hypercapnic (CBF) values, ASL-CVR was calculated using Equation 1.
The mean cerebral blood flow velocities in the middle cerebral artery were measured at rest in the normocapnic
state and in the hypocapnic state during hyperventilation.
mechanical ventilation was performed with the gas mixture composed of nitrous oxide and oxygen.
A key complication of acute hyponatraemia is normocapnic
or hypercapnic respiratory failure; the associated hypoxaemia may amplify the neurologic injury.
Human erythropoietin response to hypocapnic hypoxia, normocapnic
hypoxia, and hypocapnicnormoxia.
The trial included only normocapnic
patients and did not compare EMST with other forms of training, which the authors considered the study limitation .
Then, two ho mogenous groups were composed: ten swimmers (16.5 [+ or -] 2.4 years, 1.76 [+ or -] 0.09 m, 70.4 [+ or -] 11.7 kg, 4 females and 6 males) in the RMET group performed their usual training sessions (TS) and received RMET (in the form of normocapnic
hyperpnea); and ten swimmers (16.1 [+ or -] 2.0 years, 1.76 [+ or -] 0.07 m, 70.7 [+ or -] 4.5 kg, 3 females and 7 males) were assigned to a control group with no RMET (these swimmers performed only their TS).
They were also investigated in the 36 patients with [P.sub.a]C[O.sub.2]<45 mmHg (normocapnic
group, n=18) or [P.sub.a]C[O.sub.2] >45 mmHg (hypercapnic group, n=18) before HFOV, separately.