Anesthetized patient management for pediatric patients with pulmonary arterial hypertension (PAH) is a major challenge. The aim of this study was to evaluate the ability of dexmedetomidine to reduce pulmonary arterial hypertension in patients with pulmonary arterial hypertension undergoing cardiac surgery. Sixty-six patients with pulmonary arterial hypertension underwent the study. Patients were randomly divided into two groups: group D received a dexmedetomidine injection in a dose of 1 μg/kg in the first hour and then decreased to 0.5 μg/kg/hr, injection continued after surgery until extubation in the post-anesthetic care unit (PACU). Group C received normal saline 0.9% in a similar volume. Pulmonary artery systolic pressure (PASP) and systemic systolic blood pressure (SSBP) were recorded during and after the surgery in the postanesthetic care unit. Needing vasodilators, sedatives, extubation time, and the length of ICU stay were recorded for all patients. Patients in the dexmedetomidine group showed a significant reduction in Pulmonary artery systolic pressure and Pulmonary artery systolic pressure/systemic systolic blood pressure rates during surgery and during the first 24 hours in the post-anesthetic care unit (P<0.001). The dexmedetomidine group, in comparison with the control group, needed a significantly lower dose of a vasodilator (P<0.001) and a lower dose of sedation (P<0.001). It is concluded that the use of dexmedetomidine during the surgery in children with pulmonary hypertension reduces pulmonary artery systolic pressure during and after the surgery.
This study aimed to assess the validity and reliability of the dark personality instrument in students of general physical education units of Mashhad universities. The participants include all students of Ferdowsi, Imam Reza, Islamic Azad, and Payame Noor universities who had chosen the units of general physical education and sport in the academic year of 2021-22, using the Morgan table, 196 people were randomly selected as a sample. A standard dark personality questionnaire (Jonason & Webster, 2010) was used to collect data. Cronbach's alpha test was used to confirm the reliability of the questionnaire. To confirm the instrument's validity, exploratory and confirmatory factor analyses were used. Data analysis showed that the factor load of all items is higher than the baseline value (0.4) and the research model has a significant fit. Also, the model fit indices had acceptable values. Finally, it is recommended to sports coaches and teachers of physical education classes and leisure time to use this scale at the beginning of each semester to get to know more about the personality characteristics of students in their class and to measure these people, this can help them a lot in how to manage their classes.
The purpose of current study was "Predicting the Future Behavior of Customers of Aquatic Parks in Mashhad based on Social Identity of Brand". The method of this study was descriptive and correlative. The statistical population was consisted all customers in Mashhad aquatic parks in the summer of 2015, that based on the existing sources, 377 questionnaires were distributed with an expectancy of 90% returned. Also to collect information, 2 questionnaires including brand's social identity Hay et al. (2011) and the decisions of future behavior (BFIS) Berry (1996) were used. The results showed that all subscales of Brand's Social Identity are not effective on the future behavior of customers and the impact of these subscales that increase the future behavior of customers, according to a beta coefficient of components, that have the highest impact respectively: 1. Customers confiedence in brand (beta 0.35) 2. Consumer's satisfaction (beta 0.16) 3. Perceived value of the brand (beta 0.11). Results showed a good correlation between future behavior of the customer's and perceived value of the brand. If we define the perceived value of the product or service that is under the influence of brand identity as the measure of value by customers to brand's product and the cost that their spend to gain that product or service, then provided services by these aquatic parks have high value for the customers. Or we can say that the good identity of brand had a positive effect on percieved value of brand.
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