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Post-cardiac arrest syndrome (PCAS) is an inflammatory state of pathophysiology that can occur after a patient is resuscitated from a cardiac arrest. [1] While in a state of cardiac arrest, the body experiences a unique state of global ischemia .
Patients with sustained ROSC generally present with post-cardiac arrest syndrome (PCAS). Longer time-to-ROSC is associated with a worse presentation of PCAS. [9] Lazarus phenomenon is the rare spontaneous return of circulation after cardiopulmonary resuscitation attempts have stopped in someone with cardiac arrest. This phenomenon most ...
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.
In cardiac arrest, the heart quivers with uncoordinated contractions, and the blood flow to every part of the body — including the brain — ceases. Unlike a heart attack, in which the heart ...
With the advent of these strategies, cardiac arrest came to be called clinical death rather than simply death, to reflect the possibility of post-arrest resuscitation. At the onset of clinical death, consciousness is lost within several seconds, and in dogs, measurable brain activity has been measured to stop within 20 to 40 seconds. [2]
Agonal respirations are commonly seen in cases of cardiogenic shock (decreased organ perfusion due to heart failure) or cardiac arrest (failure of heartbeat), where agonal respirations may persist for several minutes after cessation of heartbeat.
The physiology of obstructive shock is similar to cardiogenic shock. In both types, the heart's output of blood (cardiac output) is decreased. This causes a back-up of blood into the veins entering the right atrium. [3] Jugular venous distension can be observed in the neck. This finding can be seen in obstructive and cardiogenic shock.
For people with pre-existing cardiovascular disease, the additional workload can result in myocardial infarction and/or acute heart failure, which ultimately may lead to a cardiac arrest. A vagal response to an extreme stimulus as this one, may, in very rare cases, render per se a cardiac arrest. Hypothermia and extreme stress can both ...