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Introduction: Glycosylated  hemoglobin  gives  an  average  plasma  glucose  level  over  the  past  two  to  three  months  period.  Diabetes  is  one  of  the  most  important  causes  of  mortality  and  morbidity  in  the  old  ages, that  usually  due to  its  slow  progress, patients  do  not  pay  attention  to  the  disease. Early  diagnosis  can  decrease many  complications. This  investigation  is  carried  out  with  the  aim  of  comparison  results  of  FBs, GTT  and  HbA1c  especially  in  persons  with  impaired  dfasting  glucose.
Materials  and  Methods: Our  study  is  a  cross  sectional  analytical  study. 81  persons, 40  to  65  years  old, without  any  history  of  diabetes, with  FBs  103  to  140 mg/dl  were  selected  according  to  convenience  sampling  method. FBS, GTT  and  HbA1c  tests  were  done  for  all  samples. Sensitivity, specially, positive  predict  value  and  negative  predict  value  of  tests  were  determined.
Results: In  this  study  comparison  of  HbA1c  with  FBS  showed  100%  sensitivity  and  12.5%  specificity  with  positive  predict  value  of 82%  and  negative  predict  value  of  62.7%. In  comparison  of  HbA1c  with GTT, we  observed  100%  sensitivity  and  63%  specificity  with  positive  oredict  value  of  6.3%  and  negative predict  value  of  100%. In  other part  of  this  investigation  in  comparison  of  FBS  with  GTT, 9.7%  sensitivity  and  100%  specificity  and  positive  predict  value  of  100%  and  negative  predict  value  of  18.8%  was  reported.
Conclusion: According  to  results  of  the  present  study, due  to  very  high  sensitivity  and  significant  positive  predict  value  of  HbA1c  as  compared  to  FBS, HbA1c  measurement  seems  to  be  a  good  test  in  screening  and  diagnosis  of  diabetes.
Therefore, in  impaired  fasting  glucose, we  recommend  measurement  of  both  HbA1c  and  FBS. Also  HbA1c  can  be  used  as  a  good  replacement  test  for  GTT  in  person  with  impaired  fasting  glucose. 

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Introduction: Despite different methods implemented, surgical wound infection is still an important cause of mortality and morbidity of patients which impose a considerable cost on health care system. According to recent data, administration of supplemental oxygen during operation can reduce the risk of wound infection due to increased tissue oxygenation and therefore better elimination of bacteria by oxidative killing. This study is done to investigate the effect of administered oxygen ratio on the incidence of wound infection in clean-contaminated surgery. Materials and Methods: This is a double blind clinical trial. 584 patients from both sexes between 18 to 60 years old, who were condidated for clean-contaminated surgery were divided into two equal groups randomly. One recived 80% and the other 40% FIO2 during anesthesia. The frequency of wound infection between the two groups was assessed during a two weeks period. Results: Of patients receiving 80% FIO2, 11 (3.9%) patients, and the group recieving 40% FIO2, 25(8.1%) patients had wound infection (p<0.05). Conclusion: This study similar to previous studies showed the positive effect of supplemental oxygen in decreasing risk of surgical wound infection. Therefore according to the low risk and low cost and effectivness of this method in patients undergone surgery, it is recommended in clean-contaminated surgery.

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Background: Radiocephalic arteriovenous fistula (AVF) at wrist is the vascular choice for dialysis. In the absence of a suitable vein in the wrist, elbow brachiocephalic fistula is the next choice. In this study to create an arteriovenous fistula in antecubital area, we turned to the proximal radial artery in comparison to brachial artery in antecobital area for dialysis.

Materials and Methods: We reviewed 124patients in clinical trial study that candidated for placement of AVF for dialysis in antecubital area .To create AVF ,proximal radial artery in 62 patients and brachial artery in 62 other patients selected as the artery of choice,then patients followed based on complications ,steal syndrome ,primary failure and mean time to prepare for dialysis.

Results: The mean time of maturation of AVF in brachial group was 41 days and in radial group was 43 days. Primary dysfunction in brachial group was 6 cases (10%) and in radial group was 5 cases (8%). Steal syndrome in radial group was not seen but in brachial group 2 cases (3%) were seen.

Conclusion: According to the primary success, steal syndrome and mean time of maturation of these two arteries had no significant statistic differences, but like other previous studies, this study emphasizes on usefulness and less complications. On the other hand, due to the anterior anatomical position and allowing the release of the artery, it causes easy technique for creating AVF anastomosis to the antecubital arteries and its branches.. Therefore, this study recommends use of this artery in creation of AVF in antecubital area.