SITUATIONAL SYNCOPES
\sˌɪt͡ʃuːˈe͡ɪʃənə͡l sˈɪnkə͡ʊps], \sˌɪtʃuːˈeɪʃənəl sˈɪnkəʊps], \s_ˌɪ_tʃ_uː_ˈeɪ_ʃ_ə_n_əl s_ˈɪ_n_k_əʊ_p_s]\
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A transient loss of consciousness and postural tone caused by diminished blood flow to the brain (i.e., BRAIN ISCHEMIA). Presyncope refers to the sensation of lightheadedness and loss of strength that precedes a syncopal event or accompanies an incomplete syncope. (From Adams et al., Principles of Neurology, 6th ed, pp367-9)
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Proto Oncogene Proteins c erbB 2
- cell surface protein-tyrosine kinase that is found to be overexpressed in significant number adenocarcinomas. It has extensive homology can heterodimerize EGF EPIDERMAL GROWTH FACTOR), 3 receptor (RECEPTOR, 3) and the 4 receptor. Activation of erbB-2 receptor occurs during heterodimer formation with a ligand-bound erbB family members. EC 2.7.11.-.