试述电子病案的基本特征。
一患者,男,65岁。咽喉红肿疼痛,用牛黄治疗,最宜配伍具有活血散结、消肿止痛功效的药物是() ["冰片","苏合香","石菖蒲","麝香","青黛"]
患者,女,65岁。素有高血压史,猝然昏厥,不省人事,两手握紧,牙关紧闭,右侧肢体偏瘫。拟用麝香开窍醒神,其用量是() ["0.1g","0.3g","0.5g","1g","1.5g"]
治痹痛、疥癣,宜选用的药物是() ["麝香","牛黄","冰片","石菖蒲","羚羊角"]
石菖蒲在治疗痢疾方面,长于用治的是() ["湿热痢","寒湿痢","疫毒痢","休息痢","噤口痢"]
试述制定病案保存期限及销毁时应注意的问题。