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After the brain, the heart is the second most sensitive organ to ischemia. [4] If the cause of the cardiac arrest was fundamentally a coronary pathology, then the consequences to the heart may include myocardial infarction complications. However, if the fundamental cause was non-coronary, then the heart becomes ischemic as a consequence, not a ...
The underlying mechanism involves the nervous system slowing the heart rate and dilating blood vessels, resulting in low blood pressure and thus not enough blood flow to the brain. [2] Diagnosis is based on the symptoms after ruling out other possible causes. [3] Recovery from a reflex syncope episode happens without specific treatment. [2]
Cardiac arrest (also known as sudden cardiac arrest [SCA] [11]) is when the heart suddenly and unexpectedly stops beating. [ 12 ] [ 1 ] When the heart stops beating, blood cannot properly circulate around the body and the blood flow to the brain and other organs is decreased.
Definition: A neurological flatline is referred to as brain death.It can be identified by using an EEG (electroencephalogram) test.Brain death is the loss of function of the brain, the cerebrum, that is responsible for thinking and the deep brain or the brain stem that is responsible for the breathing and reflexes such as pupillary light reflex (the constriction of the pupil of the eye in ...
Prior to cardiac arrest, patients may complain of varying symptoms depending on the underlying cause. Patients may exhibit signs of agonal breathing , which to a layperson can look like normal spontaneous breathing, but is a sign of hypoperfusion of the brainstem .
Lazarus syndrome (the Lazarus heart), also known as autoresuscitation after failed cardiopulmonary resuscitation, [1] is the spontaneous return of a normal cardiac rhythm after failed attempts at resuscitation. It is also used to refer to the spontaneous return of cardiac activity after the patient has been pronounced dead. [2]
Studies cited as contrary evidence did not address the physiological brain response to high-frequency audio, only the subject's conscious response to it. Further investigation of the observed physiological response appears to show that the ear alone does not produce the extra brain waves, [ 12 ] but when the body is exposed to high-frequency ...
Note the slight branching redness traveling up the victim's leg from the effects of the current. Common injuries caused by lightning include: muscle pains, broken bones, cardiac arrest, confusion, hearing loss, seizures, burns, behavioral changes, and ocular cataracts. [4] [3] Loss of consciousness is very common immediately after a strike. [7]