improvements in science and technology and the use of modern machinery in manufacture have led to increase in the number of workers exposed to hazardous agents including noise. this study evaluated the effects of occupational noise on hearing loss and blood pressure in welders after 4 years.in this cohort study, all of the welders working at one of neyshabur's water heater producing factories w...

the aim of this study was to evaluate the immune system and lymphocyte function in 41 iranian β-thalassemic patients and 50 controls, ages ranging from 2 to 18 years. the patients consisted of 20 splenectomized and 21 non-splenectomized patients. they were treated with desferal, and had received repeated blood transfusion. laboratory investigations included measurement of total t lymphocytes, a...

by drawing blood through a heparin lock, patients can be protected from skin damages duo to repeated needle sticks. in addition, this procedure can assist to gain more precise results in laboratory test and to prevent further complications. probably, you have ever used a heparin lock in order to infusion of medicines but, it is possible that you never use of that for blood sampling. both two pr...

objective oxygen intoxication plays an important role in the pathogenesis of some fetal diseases such as encephalopathy, ischemia& hypoxia. antioxidants can reduce oxidative damage in newborns. the object of this research was measuring total value of antioxidant and vitamin c in blood sample of pregnant women before delivery, and also in umbilical cord blood of their newborn, and repeating thes...

introduction and aims: considering high prevalence of hepatitis b virus (hbv) in iran and need for its prevention, determination of causes and risk factors can help health policy makers in control of disease. materials and methods: all blood donors of tehran city from april 1997 to march 2000 were studied in a case control design. hbsag positive donors who were referred to hepatitis consultatio...

background: full blood count has been shown to predict disease severity and mortality risk in cancer patients. this study aimed to highlight the degree of derangements of full blood count parameters and provide mean values in pre-chemotherapy breast cancer patients compared with apparently normal control subjects.methods: this was an unmatched case-control study among breast cancer patients att...

background: patients undergone mechanical ventilation need rapid and reliable evaluation of their respiratory status. monitoring of end-tidal carbon dioxide (etco2) as a surrogate, noninvasive measurement of arterial carbon dioxide (paco2) is one of the methods used for this purpose in intubated patients. objectives: the aim of the present trial was to study the relationship between end-tidal c...

background: brain hypoxia-ischemia is a human neonatal injury that is considered a candidate for stem cell therapy. methods: the possible therapeutic potential of human umbilical cord blood (hucb) stem cells was evaluated in 14-day-old rats subjected to the right common carotid occlusion, a model of neonatal brain hypoxia-ischemia. seven days after hypoxia-ischemia, rats received either saline ...