男，61岁，拟在硬膜外阻滞下行胆囊切除术，硬膜外穿刺成功后，给予试验量2%利多卡因3ml+初量0．75%布比卡因10ml，并静注氟哌啶2．5mg，哌替啶50mg，咪达唑仑1mg辅助麻醉。麻醉满意。进腹探查时发生窦性心动过缓。IV阿托品1．0mg，心率仍继续下降，此时的处理措施是（）。
A.阿托品0.5mg，IV
B.异丙肾上腺素5μg，IV
C.提高吸入氧浓度
D.麻黄碱10mg，IV
E.麻黄碱20mg，IV
参考答案：B
解析：异丙肾上腺素5μg，IV，可加速心脏传导速度、提升心率。
| Modern industrial society grants little status to old people. In fact, such a society has a system of built-in obsolescence. There is no formal system for continuing our education throughout our life in order to keep up with rapidly changing knowledge. When our education and job skills have grown obsolete, we are treated exactly like those who have never gained an education or job skills and are not encouraged or given the opportunity to begin anew. As a society becomes more highly developed, the overall status of older people diminishes. Improved health technology creates a large pool of old people, who compete for jobs with the young. However, economic technology lowers the demand for workers and creates new jobs for which the skills of the aged are obsolete, forcing older people into retirement. At the same time, young people are being educated in the new technology and are keeping pace with rapid changes in knowledge. Finally, urbanization creates age-segregated neighborhoods. Because the old live on fixed incomes, they must often live in inferior housing. All these factors -- retirement, obsolete knowledge and skills, inferior standards of living -- lower the status of the aged in society. A century ago, when one could expect to live only to 50 or so, the life span more or less coincided with the occupation and family cycle. But today the average life span allows for fifteen to twenty years of life after these cycles. It appears that our life span is outpacing our usefulness in society. |
Which of the following statements is NOT true
A．Retired people could only live on fixed incomes.
B．Retired people are more skillful than young people.
C．Young people are educated in the new technology.
D．Young people are keeping pace with rapid changes.