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{| class="wikitable"
! Acidosis !! Preexisting acidosis, DM, diarrhea, drugs and toxins, prolonged resuscitation, renal disease, shock !! Reassess adequacy of oxygenation, and ventilation; reconfirm endotracheal-tube placement  !!  !!  !!  !!  !!  !!  !!
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		Hyperventilate
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		Consider intravenous bicarbonate if pH <7.20 after above actions have been taken
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Cardiac tamponade	Hemorrhagic diathesis, cancer, pericarditis, trauma, after cardiac surgery or MI	Give fluids; obtain bedside echocardiogram
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		Perform pericardiocentesis. Immediate surgical intervention is appropriate if pericardiocentesis is unhelpful but cardiac tamponade is known or highly suspected.
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Hypothermia	Alcohol abuse, burns, CNS disease, debilitated or elderly patient, drowning, drugs and toxins, endocrine disease, history of exposure, homelessness, extensive skin disease, spinal cord disease, trauma	If severe (temperature <30°C), limit initial shocks for V-Fib or pulseless V-Tach to three; initiate active internal rewarming and cardiopulmonary support. Hold further resuscitation medications or shocks until core temperature is >30°C.
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		If moderate (temperature 30-34°C), proceed with resuscitation (space medications at intervals greater than usual), actively rewarm truncal body areas
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Hypovolemia, hemorrhage, anemia	Major burns, DM, GI losses, hemorrhage, hemorrhagic diathesis, cancer, pregnancy, shock, trauma	Give fluids
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		Transfuse pRBCs if hemorrhage or profound anemia is present
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		Thoracotomy is appropriate when patient has cardiac arrest from penetrating trauma and a cardiac rhythm and the duration of cardiopulmonary resuscitation before thoracotomy is <10 min
}