Some substances are more toxic than others. The toxicity of a substance is described by the types of effects it causes and its potency. 1  Types of Effects: Different chemicals cause different effects.
I think I remember reading that injured means bruises and lascerations, seriously injured meant hospital but not life threatening, critically injured meant hospital ICU time and fatally injured meant injuries leading to dying sometime later.
Critical Condition Definition. What Does Critical Condition Mean. You need to go and speak to your mom's nurses or doctors and ask them all these questions - write them down so you don't forget any. Generally 'critical condition' usually means the patient is very unwell and the outcome is very uncertain. Exactly what this means and the prognosis will depend on the individual patient and you need to speak to those people looking after your mom.