Causes of a brachial plexus injury. Brachial plexus injury (BPI) is an umbrella term for a variety of conditions that may impair function of the brachial plexus nerve network. The majority of pediatric and adult brachial plexus injuries are caused by trauma. The most common inciting events may include:auses of a brachial plexus injury. Brachial plexus injury (BPI) is an umbrella term for a variety of conditions that may impair function of the brachial plexus nerve network. The majority of pediatric and adult brachial plexus injuries are caused by trauma. The most common inciting events may include:
frustration meaning, definition, what is frustration: the feeling of being annoyed or less confident because you cannot achieve what you wantâ¦. Learn more.
1 (Iâm as) frustrated as a dog on a chain âAnton Chekhov. 2  Frustrated [about career] â¦ as though she were peanut butter that was forced into a hypodermic syringe âAnn Jasperson.  Frustration â¦ began to creep up his neck like a hot hand âFlannery OâConnor.