An unrestrained 37-year-old female patient is in cardiac arrest after her vehicle struck a tree head-on at a high rate of speed. Assessment reveals that the patient suffered massive blunt trauma to the chest and abdomen. The patient is quickly extricated from the vehicle and placed in a supine position on the ground. It is estimated that the patient has been in cardiac arrest for approximately 10 minutes, during which time CPR was not performed. At this time, the EMT would:

According to Unitek EMT, if a device advises you to, you should deliver one shock, then immediately resume CPR, starting with chest compressions, or give chest compressions only, for about two minutes. You can then use the defibrillator to check the person's heart rhythm. If necessary, the defibrillator will give another shock. You should repeat this cycle.  Shock is a clinical syndrome with four stages: initial, compensatory, progressive, and refractory. There are broadly four types of shock: distributive, cardiogenic, hypovolemic, and obstructive.  Here are some types of... Show more

According to Unitek EMT, if a device advises you to, you should deliver one shock, then immediately resume CPR, starting with chest compressions, or give chest compressions only, for about two minutes. You can then use the defibrillator to check the person's heart rhythm. If necessary, the defibrillator will give another shock. You should repeat this cycle. 

Shock is a clinical syndrome with four stages: initial, compensatory, progressive, and refractory. There are broadly four types of shock: distributive, cardiogenic, hypovolemic, and obstructive. 
Here are some types of shock:
Cardiogenic shock: Occurs when the heart has been damaged to the point where it cannot pump enough blood to meet the body's demand for oxygen. A heart attack is the most common cause of cardiogenic shock.
Hypovolemic shock: Occurs when there is a decrease in circulating volume. This can be caused by hemorrhage, vomiting, diarrhea, excessive perspiration, or fever. Signs and symptoms of hypovolemic shock include elevated heart rate, hypotension, tachypnea, acral cyanosis of the extremities, and cold, clammy skin.
Anaphylactic shock: Occurs when there is a loss of vasomotor tone following the massive outpouring of vasoactive mediators resulting from the degranulation of mast cells and basophils.
Septic shock: Occurs when there is impaired tissue perfusion in the context of an inflammatory response. This may be traumatic or surgical, or it may involve local inflammation, infection, severe burns or the presence. 

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