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PREDICTIVE STUDIES VIII (PS VIII): CO2 and Adaptation to Acute Hypoxia
Major Category: CO2 and adaptation to acute hypoxia (PS VIII)
Subcategory 6: Six (6) trained Subjects. Evaluated tests, with 10% O2, and 10% O2 with 4% CO2 at 1 ATA.

Date: May 1993

Expt. Title: Experiment Series 5. C1. A full experiment series with physiological and 3 selected tests of mental performance responses to 10% inspired O2 at rest, followed immediately by inspiration of 10% O2 with 4% CO2 at 1 ATA. (Expt. 14.13).

Description:

The three tests selected previously were used in 8 Subjects (all of whom participated in the previous Series 5) during inspiration of 10% O2 for 37 min., followed immediately by inspiration of 4% CO2 with 10% O2 for 23 minutes.

Measurements:
Physiological:

Arterial O2 saturation, heart rate, end-tidal PCO2 and PO2, ventilation.

Mental Performance:

Word-Number Test of (short term) Associative Memory (PMS Test E1)
Letter Sets (Order) Test of Inductive Reasoning (PMS Test F1)
Division Test of Numerical Ability (PMS Test G4)

REPORT: Gelfand, R., B. Youdelman, J. Clark, and C. Lambertsen. Mental performance and physiological effects of hypoxia (0.1 ATA O2 insp.): Effects of restored normocapnia (ABSTRACT). FASEB J. 8(4): A554, 1994.

REPORT: Lambertsen, C.J. Acute physiologic adaptation to acute hypoxia. Relation to fire prevention and extinguishment in closed spaces (ABSTRACT). Undersea Hyperbaric Med. 21(Supp.): 38, 1994.

07 February 2000 11:44:23 AM