You have received a report from another emt-b about a patient who was assaulted. the emt-b gives you the patient's history and reports the findings of the physical exam. the exam includes the finding of multiple skin contusions and hematomas. what is the difference between a contusion and a hematoma of the skin?
a) contusions and hematomas have the same physical findings.
b) contusions are damaged skin and blood vessels that form red or blue discolorations of the skin. hematomas are ruptured blood vessels beneath the skin that bleed enough to form bumps and swelling under the skin.
c) hematomas are damaged skin and blood vessels that form red or blue discolorations of the skin. contusions are ruptured blood vessels beneath the skin that bleed enough to form bumps and swelling under the skin.
d) contusions bleed under the skin. hematomas bleed externally.

B) Contusions are damaged skin and blood vessels that form red or blue discolorations of the skin. Hematomas are ruptured blood vessels beneath the skin that bleed enough to form bumps and swelling under the skin.

Explanation:

Contusion or bruising results when the blood vessels are broken and the blood is leaked out and blood can be observed at the place where the injury actually occurred. The hematomas are the proof of injuries which are caused by the same reason as that of contusion but are larger than contusions. The contusions are dark red to brown in starting then turns blue to pale yellow on recovery. The hematomas are formed when large number of blood vessels are affected associated with swelling and bumps. Thus the skin appears raised.  

answer:

The application of an intermittent cryotherapy protocol after mild or moderate ankle sprain significantly reduced the level of subjective pain on activity, one week after the injury, compared with a standard protocol. There was no significant difference in terms of function, swelling, or pain at rest.