View Full Version : Cerebral hypoxia
dinaali
Oct 31, 2007, 01:44 AM
Someone experienced cardiac arrest and was comatosed for 2 days.. now suffering from amnesia and some halluciantions which the doctors said are reverible symptoms that will take time to resolve.. is this ture?
inthebox
Nov 1, 2007, 12:20 PM
©2007 UpToDate®
Clinical parameters associated with an unfavorable prognosis
-----------------------------------------------------------------------
Duration of anoxia >8-10 minutes
Duration of CPR >30 minutes ******************
Pupillary light reaction Absent on day 3
Motor response to pain Absent on day 3
Brainstem reflexes Absent
Blood glucose on admission >300 mg/dL
Glascow coma score on day 3 <5
GPCS on day 3 <22
©2007 UpToDate®
Significance of physical findings in coma following cardiac arrest
Patients with virtually no chance of regaining independence
--------------------------------------------------------------------
Initial examination No pupillary light reflex
One day Motor response no better than flexor and spontaneous eye movements neither orienting nor roving conjugate
Three days Motor response no better than flexor, no spontaneous eye opening
One week Motor response not obeying commands and spontaneous eye movements neither orienting nor roving conjugate.
Two weeks Oculocephalic response not normal, not obeying commands, no spontaneous eye opening, eye opening not improved at least 2 grades from initial examination
Patients with best chance of regaining independence
--------------------------------------------------------------
Initial examination Pupillary light reflexes present and motor response flexor or extensor. Spontaneous eye movements roving conjugate or orienting
One day Motor response withdrawal or better and eye opening improved at least 2 grades
Three day Motor response withdrawal or better and spontaneous eye movements normal
One week Motor response obeying commands
Two weeks Normal oculocephalic response
Grace and peace
DonnieLSD
Nov 1, 2007, 12:26 PM
Im not a doctor, but hypoxia comes from being deprived of oxygen.
inthebox
Nov 1, 2007, 12:35 PM
During a cardiac arrest, there is no pulse, no blood pressure, no breathing.
In this circumstance, the brain does not get adequate or no blood flow.
It is blood flow to the brain that brings oxygen and nutrients to the brain, thus no or inadequate blood flow to the brain is equivalent to hypoxia [low oxygen] or anoxia [no oxygen] and resulting damage to the brain.
Bottom line is that in a cardiac arrest, restoring oxygen and a blood pressure within say 10 minutes carries a better prognosis than a cardiac arrest lasting more than 15 - 30.
Minutes. That is why there is a push for more available automatic defibrillators.
Grace and peace
dinaali
Nov 7, 2007, 02:08 PM
someone experienced cardiac arrest and was comatosed for 2 days.. now suffering from amnesia and some halluciantions which the doctors said are reverible symptoms that will take time to resolve.. is this ture??
Thanks for the info..
I would like to ask you about the extent of the damage... symptoms like amnesia, hallucinations and poor muscle coordination are reversible?