Table 1.

5H's and 5 T's" checklist [8]

	H's	T's
Cardiac arrest	Hypovolemiaus Hypothermia Hypoxia Hypo or hyperkalemia Hydrogen ion (acidosis)	-Cardiac tamponadeus -Toxins -Tension pneumothoraxus - Pulmonary thrombosisus Thrombosis coronary

US ultrasound