Traumatic brain injuries (in English and Chinese 中英文)
Compiled by: Joe Hing Kwok Chu 朱興國編譯 Chemical reaction in traumatic brain injuries During the early stage of traumatic brain injuries, the sympathetic nervous system becomes excited due to the increase of the hormones epinephrine (adrenaline) and nor epinephrine. After that the body releases catechol-O-methyl transferase, an enzyme involved in metabolizing (degrading) catecholamines (like epinephrine, nor-epinephrine, and dopamine)
Another issue is pituitary problem.
Traumatic brain injury (TBI) may cause impairment of pituitary hormone secretion, which may contribute to long-term physical, cognitive, and psychological disability. Therefore, evaluation of pituitary hormone secretion, including growth hormone, should be included in the long-term follow-up of all TBI patients so that adequate hormone replacement therapy may be administered.[2] Hypopituitarism has recently been reported to occur in 35–80% of patients in rehabilitation following head injury. Hypopituitarism causes adrenal insufficiency. Adrenal insufficiency accounts for 30–50% of these cases.[1] Approximately 50% of patients with moderate or severe TBI have at least transient adrenal insufficiency which may be the result of pituitary insufficiency.
When cortisol, epinephrine, nor-epinephrine, and dopamine become insufficient, the patients may experience depression, cold extremities, r
When cortisol, thyroid hormone, epinephrine, nor-epinephrine, and dopamine become insufficient, may cause syndrome of shenyangxu and liver qi stagnation.
Blood clots in the brain can cause long term effect on movements, eye sight, hearing, balance. It should be addressed early..
If
創傷性腦損傷可能影響垂體激素的分泌,而致長期認知和心理障礙。因此,垂體激素的分泌,包括生長激素之核定,應包括在長期隨訪所有創傷性腦損傷患者的以便充分施用激素替代療法[2]。
在創傷性腦損傷的早期階段,交感神經系統變得興奮是由於腎上腺素和去甲腎上腺素的增加。過後,身體會釋放兒茶酚-O -甲基轉移酶
最近有報導在頭部受傷康復之後垂體功能低下,30-50%患者發生腎上腺皮質功能不全。 [1]
約50 %的患者有中度或重度腦外傷至少有短暫的腎上腺皮質功能不全,可能是垂體功能不足所致的。
當皮質醇,腎上腺素,去甲腎上腺素和多巴胺變得不足,
Ventricle edema
[1] Oxford Journals Medicine BJA Volume 96, Issue 1 Pp. 72-76 [2] J Neurotrauma. 2004 Jun;21(6):685-96.
[3] http://pituitary.ucla.edu/body.cfm?id=47