首页
登录
职称英语
The complications frequently accompanying diabetes, such as impairment of vi
The complications frequently accompanying diabetes, such as impairment of vi
游客
2024-04-23
38
管理
问题
The complications frequently accompanying diabetes, such as impairment of vision and of kidney function, are now thought to result from the lack of continuous control of blood glucose concentrations. The healthy pancreas, in response to increases in blood glucose concentration, releases small quantities of insulin throughout the day and thereby maintains the concentration within physiological limits(nomoglycemia). But the diabetic generally receives only one large dose daily. The diabetic’ s blood glucose concentration can thus fluctuate greatly during the interval between doses, and it has been suggested that the complication result from the periods of high concentrations of blood glucose(hyperglycemia). Many investigators thus believe that restoration of normoglycemia might halt the progression of such complications and perhaps even reverse them.
There are three primary techniques that have been investigated for restoration of normoglycemia. They are: transplantation of whole, healthy pancreases; transplantation of islets of Langerthan, that portion of the pancreas that actually secretes insulin, and implantation of artificial pancreases. There has, in fact been a great deal of success in the development of these techniques and each seems, on the whole, promising. Nonetheless, it will undoubtedly be many years before any one of them is accepted as a treatment for diabetes.
To many people, the obvious approach would seem to be simply to transplant pancreases from cadavers in the same manner that kidneys and other organs are routinely transplanted. That was the rationale in 1966 when the first recorded pancreas was performed. Between 1960 and 1975, there were forty-six pancreas transplants in forty-five other patients in the United States and five other countries. But only one of these patients is still alive with a functioning graft and surgeons have found that the procedure is not simple as they once thought.
The surviving patient has required no insulin since the operation. Another patient survived 638 days without requiring insulin. And one patient survived a transplantation for more than a year, but died when he chose not to take immunosuppressive drugs. These results, though meagre, suggest that the procedure has the potential for success.
The rest of the patients, however, either rejected the transplant or died within a short period. There does not appear to be any technical problem with the procedure. Rather, most of the patients were already so severely debilitated by the complications of diabetes that they could not withstand the surgery and the immunosuppressive regimen required to prevent rejection. More than half of the patients, furthermore, also required a kidney transplant. Most investigators now agree that the simultaneous transplantation of both organs is too great a shock to the patient and greatly increases the total risk. [br] According to the text, widely spaced doses of insulin can cause______.
选项
A、reversal of normal kidney function
B、delay in the onset of diabetes
C、radical changes in the concentration of blood glucose
D、restoration of normoglycemia
答案
C
解析
细节题。根据insulin、doses可定位到第一段But the diabetic generally receives only one large dose daily.The diabetic’s blood glucose concentration can thusfluctuate greatly during the interval between doses,and it has been suggested that the complication result from the periods of high concentrations of blood glucose(hyperglycemia).”但是糖尿病患者一般是每天得到一次大剂量胰岛素的注射。这样在两次注射之间,糖尿病患者的血糖浓度会发生很大波动,而且目前已被指出,并发症可能就是源于这些高血糖浓度时期(高血糖)。”说明两次注射之间糖尿病患者的血糖浓度会发生剧烈的变化,和C选项内容一致,其中radical changes和原文fluctuate greatly为同义转换,所以答案选C。
转载请注明原文地址:https://tihaiku.com/zcyy/3567118.html
相关试题推荐
Thecomplicationsfrequentlyaccompanyingdiabetes,suchasimpairmentofvi
Thecomplicationsfrequentlyaccompanyingdiabetes,suchasimpairmentofvi
Itisfrequentlyassumedthatthemechanizationofworkhasarevolutionary
Itisfrequentlyassumedthatthemechanizationofworkhasarevolutionary
Thecomplicationsfrequentlyaccompanyingdiabetes,suchasimpairmentofvi
Thecomplicationsfrequentlyaccompanyingdiabetes,suchasimpairmentofvi
Thecomplicationsfrequentlyaccompanyingdiabetes,suchasimpairmentofvi
Itisfrequentlyassumedthatthemechanizationofworkhasarevolutionary
Itisfrequentlyassumedthatthemechanizationofworkhasarevolutionary
Itisfrequentlyassumedthatthemechanizationofworkhasarevolutionary
随机试题
Choosethecorrectletter,A,BorC.[br]WhyisJeremyconsideringastudentw
Thisnewcoatcostme______thelastoneIboughttwoyearsago.A、threetimesB、t
某保险公司2003年国债投资收益率为2.6%,证券收益率为3.4%,如果该公司决
立项申请书是项目建设单位向上级主管部门申请项目时所必须的文件,其核心内容包括(
治疗眼疳证的首选方剂是A.杞菊地黄丸 B.石斛夜光丸 C.养肝明目丸 D.
患者男,51岁。右颈肩痛1年,伴右手麻3个月。诊断为颈椎病。在此诊断中,以下哪一
右侧分割图片中,能最好地拼成左侧给定的图形。 A.AB.B
下列属于等级资料的有( )A.一级教师、高级教师、特级教师 B.未成年人、成
共用题干 一般资料:求助者,女性,26岁,公务员。案例介绍:四个月前求助者的父
A.十二指肠损伤 B.胰腺破裂 C.脾破裂 D.肝破裂 E.结肠损伤尿淀
最新回复
(
0
)