BEECHCRAFT
SectlonX
Safety Information
example,
the
time
of
useful
consciousness
is
approximately 1 to 2 minutes. Therefore, in the
event
of
depressurization, oxygen masks should be
obtained and used
immediately.
Should symptoms
occur
that cannot definitely be
identified as
either hypoxia
or
hyperventilation, try
thre:e
or
four deep breaths
of
oxygen.
The
symptoms
should improve
markedly
if
the
condition
was
hypoxia (recovery from hypoxia is rapid).
HYPERVENTILA
TION
Hyperventilation,
or
overbreathing,
is
a disturbance
of
respiration that may
occur
in individuals as a
result
of
emotional
tension
or
anxiet
y. U nder
conditions
of
emotional
stress,
fright,
or
pain,
breathing rate may increase, causing increased lung
ventilation, ahhough the carbon dioxide output
of
the body cells
does
not increase. As a result, carbon
dioxide
is
''washed
out"
of
the blood.
The
most
common
symptoms
of
hyperventilation
are:
dizziness; hot and cold sensations; tingling
of
the
hands, legs and feet; tetany; nausea; sleepiness; and
finally, unconsciousness.
lf
the symptoms persist,
discontinue
use
of
oxygen and consciously slow
your breathing rate
until
si11mptoms
clear, and then
resume normal breathing rate. Normal breathing can
be
aided by talking aloud.
March, 1981
1()-61
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