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
18
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
PressureCooker(压力锅)SafetyWhenyouarecookingwith
Maryhadan_________;she’sbeenknockeddownbyataxi.A、eventB、occurrenceC、
共济失调的表现患者出现A.肌痉挛 B.醉汉步 C.舞蹈样运动 D.帕金森步
张先生,57岁,公务员,高血压病史15年,服药依从性较差,吸烟,晚餐多为餐馆饮食
如图,已知图中四边形两条边的长度和三个角的度数,四边形ABCD的面积是_____
房地产广告中对价格有表示的,应当清楚表示为实际的销售价格,明示价格的( )。A
上市公司独立董事的职权有()。A:重大关联交易应由独立董事认可后,提交董事会讨论
A.氢氧化铝 B.哌仑西平 C.雷尼替丁 D.奥美拉唑 E.丙谷胺阻断促
设备上产生的各种谐振过电压按原因分类可以归纳为()类型。 A.工頻电压谱振;
板桩码头中的锚碇叉桩由一对叉桩和其上端现浇桩帽组成,叉桩靠()来承受拉杆的拉力。
最新回复
(
0
)