Showing 4 results for Haddad
Kh Forouzan-Nia, F Pirayeh Haddad, Mh Soltani, S Zare,
Volume 13, Issue 4 (Atumn 2005)
Abstract
In any patient with a history of penetrating thoracic trauma, cardiac injury must be kept in mind. Here,
we describe a 36 years-old female referred to this hospital with severe chest pain and hypotension. After
primary evaluation and suggestion of AMI, streptokinase was started for the patient and because of
deterioration of vital signs, cardiac surgery consultation was requested. After performing urgent
echocardiography, massive pericardial tamponade was detected. Visualization of a knife blade on C.X.R and
past medical history of thoracic stab injury led to a diagnosis of delayed cardiac tamponade and urgent
sternotomy was performed. The blade that had penetrated the right ventricular chamber was extracted. Six
days after operation, patient was discharged without any problem. This case study suggests the importance of
high suspicion to cardiac injury in any patient with chest pain and a history of chest trauma.
M Haddadzadeh, M Nemati, H Akhlagh, M Abdollahi,
Volume 20, Issue 1 (Apr / May 2012)
Abstract
Introduction: The recently introduced technique of warm heart surgery may be a very effective method of myocardial protection. Although the systemic effects of hypothermic cardiopulmonary bypass are well known, the effects of warm heart surgery are not.
Methods: In a prospective trial, 60 patients undergoing an elective coronary artery bypass grafting were randomly allocated to normothermic(30 patients) and hypothermic(30 patients) group and assessments regarding renal, respiratory and neurologic complications and bleeding volume was done.
Resulst: Eighty percent of hypothermic group and 86% of normothermic group were males (p=0/36). Mean age was 56.4 and 56.1 years in hypothermic and normothermic groups, respectively. Groups had similar central temperature, shivering, nipride usage, intake and output, bleeding volume, neurologic complications and ICU staying(p>0/05) but inotrop usage and incidence of phrenic nerve palsy were higher in hypothermic group(p<0/05).
Conclusion: Hypothermic procedure leads to a lower rate of respiratory complications, therefore we recommend replacing hypothermic procedure by normothermic one.
Ar Daneshkazemi , Ar Davari, M Mousavinasab, M Hatamihajiagha, Ma Haddad,
Volume 21, Issue 3 (Dental Supplement 2013)
Abstract
Introduction: Characteristics of Dental materials may be examined under stimulated oral conditions like loadcycling and Thermocycling. The aim of this study was to evaluate the effect of loadcycling on microleakage of class V cavity preparations restored with composite and total etch adhesives.
Methods: One hundred class V preparations (5mm×3 mm and 2.5mm axial Depth) with incisal margin in enamel and gingival margin in dentin, were prepared in the anterior bovine teeth. The teeth were randomly divided into two groups which restored with single Bond (3M-USA) or excite (Ivaclar/viva dent/Lichtenstein). Each group was further divided into five subgroups. The numbers of used loadcycles involved respectively 0, 50k, 100k, 200k, 300k. [K=1000] Then, all the teeth were covered with sticky wax except 1mm around the samples and were immersed in 2% methylene blue for 24 hours. Then all the teeth were sectioned longitudinally and the scores of Dye penetration were registered under stereomicroscope. The study data were analyzed using kruskal Wallis and Mann Whitney and wilcoxon tests.
Results: All the dentin margins showed higher microleakage than enamel margin (P=0.0001). There was no significant difference between the microleakage of single bond and Excite(P>0/05). The effect of the number of loadcycles on the microleakage of the single bond and Excite in dentin and enamel margin was not significant.
Conclusion: Enamel margins showed less microleakage than dentin margins. This study did not show any increase in microleakage after increasing the number of loadcycles
Ar Daneshkazemi, Ar Davari, M Modabber, Ma Haddad,
Volume 23, Issue 4 (Jun-Jul 2015)
Abstract
Introduction:Various methods are applied in order to restore maxillary premolar teeth which show much decay, though some inconsistencies have been reported in regard with the rate of fracture strength in different studies. Therefore, in this study, fracture resistance of buccal cusp was compared via 5 different types of restorations.
Methods: In this experimental study, 75 intact extracted maxillary premolars were used and divided into 5 groups. Standard MOD cavity with reduction of pulpal cusp was prepared in all groups and then was restored with different methods. The teeth were randomly divided into Group A: amalgam build-up with one pin, Group B: amalgam build-up with two pins, Group C: composite build-up , Group D: composite build-up with fiber(FRC) and Group E: ceramic onlay. The specimen were assessed via Universal Testing Machine in order to examine fracture resistance. In order to analyze the study data, Mann- Whitny and Kruskal Wallis tests were utilized to make the comparison among five types of materials.
Results:There was a high significant difference among all the groups. The average fracture resistance values were as follows: group A 236.19 N, group B 289.81 N, group C 333.07 N, group D 459.31 N and group E 165.04 N.
Conclusion: Regarding the higher cuspal fracture resistance in group D, it can be definitely possible to apply this method to restore destructed and carious maxillary premolar teeth with more reliability.
