E. Benlloch et al., VENTILATORY PATTERN AT REST AND RESPONSE TO HYPERCAPNIC STIMULATION IN PATIENTS WITH OBSTRUCTIVE SLEEP-APNEA SYNDROME, Respiration, 62(1), 1995, pp. 4-9
We studied the ventilatory pattern and mouth occlusion pressure (P-0.1
) at rest and the response to awake hypercapnic stimulation in 27 pati
ents with obstructive sleep apnea syndrome (OSAS). The respiratory pat
tern was characterized by both increased P-0.1 and V-T/T-i (p < 0.05),
with a higher VE (p < 0.01) due to a slight increase in V-T. Ventilat
ory response to hypercapnic stimulation showed no significant differen
ces with respect to the control group. Our findings reveal that OSAS p
atients show an increased minute output secondary to a mild degree of
hyperstimulation on the baseline central ventilatory control and that
there is a subgroup of patients with a decreased ventilatory response
to CO2.