Concealed definition, to hide; withdraw or remove from observation; cover or keep from sight: He concealed the gun under his coat. See more.
Obstructive Shock: Causes, Signs and Symptoms, & First Aid Management. Obstructive shock is a medical emergency that occurs due to mechanical problems that averts diastolic filling resulting to decreased cardiac output. Obstructive shock is a medical emergency that occurs to mechanical problems that avoids diastolic filling from occurring.
The briefest, electric shock type of paresthesia can be caused by tweaking the ulnar nerve near the elbow. Similar brief shocks can be experienced when any other nerve is tweaked (a tweaked neck nerve may cause a brief shock-like paresthesia toward the scalp).