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As per your description,Possibly it was vasovagal syncope. It occurs when a person faint because the body overreacts to certain triggers, such as the sight of blood. It may also be called neurocardiogenic syncope.Vasovagal syncope is mediated by a reflex that ultimately leads to a severe drop in blood pressure (hypotension) associated or not with bradycardia. On occasion the heart can stop for a few seconds.
There are multiple causes of syncope including rhythm disorders from the heart due to rapid or very slow heart rhythms.
The treatment in severe cases may include
Inserting an electrical pacemaker to regulate the heartbeat may help some people with vasovagal syncope.
If sudden cardiac arrest lasts more than 8 minutes, survival is rare.
Brain begins to occur after about four minutes without oxygen.
So i do think there may not be a permanent brain damage due to hypoxia.
Probably since he is also suffering from stress/anxiety also so that may be a factor also prolonging the recovery time.
I understand your concern.
His blood pressure should be monitored as there can be blood pressure fluctuation in his case causing disorientation.
Anxiety,stress,hypoglycemia can be other possible causes.
It can be possible to have some weakness,fatigue few weeks after cardiac arrest in some cases.
He needs to be properly evaluated by a cardiologist to rule out underlying cause of disorientation as well.
And his routine lab work should be done.
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