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کاربرد نوع شرط:
- جایگاه : پژوهشی
- مجله: Iranian Journal of Neonatology
- نوع مقاله: Journal Article
- کلمات کلیدی: Infant,Blood,Venipuncture,Head,Hand,Physiologic
- چکیده:
- چکیده انگلیسی: Background: Venipuncture is one of the most painful and common interventions in Neonatal ward. A preterm infant can not cope long-lasting physiologic stresses; therefore, the pain caused by blood sampling may change the infant’s physiologic responses to the stress. This present study aim is to investigated and compare physiologic changes (pulse rate and oxygen saturation) in two sites of blood sampling in preterm infants.
Methods: This crossover clinical trial was performed on 105 preterm infants of 28-32 weeks’ gestational age in Tabriz Alzahra teaching hospital. Infants were selected through convenient sampling method and were allocated to two groups using doubleblock. In group 1(53 infants): the blood was first drawn from head veins and after a 24-hour interval, it was repeated at the back of the hand. In group 2 (52 infants): this procedure was implemented conversely.Infants' demographic variables and physiologic values(pulse rate and oxygen saturation) were measured in both sampling methods. The data were analyzed using SPSS.13, Paired t-test and Friedman test. P˂ 0.05 was considered as significant.
Results: There was a significant difference between two groups considering infants’ age and various assessing timeswhen pulse rate changeswere investigated (Pv≤0.001);however, no significant difference was found regarding toblood sampling sites(head & back of the hand)).In addition, no significant difference was found in oxygen saturation changes in terms of age and blood sampling sites(head& back of the hand); however, these changes were significantly different in terms of different blood sampling times (PvTIME≤ 0.001).
Conclusion: Pulse rate and oxygen saturation changingwas not significantly different in two methods of blood sampling from head veins and back of the hand veins in preterm infants; therefore, both sites can be used for drawing blood. During blood sampling in preterm infants of lower gestational age, the rate of pulse increased;however, the level of oxygen saturation decreased. As a result, since infants of lower gestational age are more vulnerable, drawing blood is required to be performed at the first attempt and no more attempts should be made- انتشار مقاله: 22-06-1397
- نویسندگان: Zahra Pourashoori,Keyvan Mirnia,Fatemeh Ghorbani,Abdolrasoul Safaiyan,Mohammad Ali Nematzadeh,Mohammad Arshadi Bostanabad
- مشاهده
- جایگاه : پژوهشی
- مجله: Advances in Environmental Technology
- نوع مقاله: Journal Article
- کلمات کلیدی: optimization,Wastewater treatment,Membrane technology,Reuse,Bentazon
- چکیده:
- چکیده انگلیسی: Although bentazon is widely used as an agricultural herbicide, it is harmful to humans and poses many environmental threats. This study focused on the treatment of wastewater contaminated with bentazon pesticides using membrane technology. In this regard, low-pressure reverse osmosis (RO) was employed as it has already been used in the removal of other micro-pollutants. The effects of process variables on water flux and bentazon rejection were studied: temperature, pressure, and bentazon feed concentration. Based on central composite design (CCD), the quadratic model was engaged to correlate the process variables with the water flux and the bentazon removal responses. The obtained results showed that the bentazon rejection increased by enhancing the pressure while it decreased at higher feed solution concentration. However, with increasing temperature, the amount of bentazon removal was reduced. A bentazon rejection efficiency of 100 % could be achieved under optimum conditions (i.e., the temperature of 29.8 ℃ and hydrostatic pressure of 12.6 bar for a feed solution concentration of 66.9 mg/L). Therefore, reverse osmosis can effectively remove bentazon.
- انتشار مقاله: 01-03-1399
- نویسندگان: Mohammad Nematzadeh,Abdolreza Samimi,Soheila Shokrollahzadeh,Davod Mohebbi-Kalhori
- مشاهده