scholarly journals The effects of navigation and tranexamic acid in reducing the need for blood transfusion after TKA

2020 ◽  
Author(s):  
Suk Kyoon Song ◽  
Hee Chan Kim ◽  
Seung Bum Chae ◽  
wonkee choi

Abstract Background: We investigate the synergistic effect of the use of tranexamic acid and navigation in reducing the need for blood transfusion after total knee arthroplasty (TKA). Secondly, we compare the effects of navigation and tranexamic acid on blood transfusion reduction after TKA. Methods: Patients were divided into 3 groups and compared. Those who had manual TKA with the use of tranexamic acid were group 1 (N = 30), those who had navigated TKA without tranexamic acid were group 2 (N = 30), and those who had navigated TKA with tranexamic acid were group 3 (N = 30). Group 1 was studied prospectively, while group 2 and 3 were studied retrospectively. All operation was held by one operator. We measured the frequency of transfusion after the operation within the admission period. To compare the postoperative bleeding, drainage volume during two days after surgery was compared and analyzed. Results: Group 1 (Manual TKA with tranexamic acid) had 2 cases of transfusion (6.7%), while there were 9 cases in group 2 (Navigated TKA with no tranexamic acid) (30%), and 3 cases in group 3 (Navigated TKA with tranexamic acid) (10%). In Chi-square test, this difference was statistically significant. Average of 525.50 ± 194.91 ml of drainage was drained in two days after surgery in group 1 (Manual TKA with tranexamic acid), 611.60 ± 263.20 ml in group 2 (Navigated TKA with no tranexamic acid) and 411.42 ± 188.21 ml in group 3 (Navigated TKA with tranexamic acid). This difference was analyzed in one-way ANOVA which showed significantly different. The need for transfusion in group 2 (Navigated TKA with no tranexamic acid) was 5.86 times higher than that in group 1 (Manual TKA with tranexamic acid). The necessity of transfusion in the group 3 (Navigated TKA with tranexamic acid) was 0.199 times higher than that of the group 2 (Navigated TKA with no tranexamic acid). Conclusion: The combined use of navigation and tranexamic acid has no synergistic effect in reducing post TKA bleeding and the need for blood transfusion compared to tranexamic acid alone. And, use of tranexamic acid is more effective than navigation in reducing blood transfusions and blood loss after TKA.

2008 ◽  
Vol 9 (7) ◽  
pp. 65-72 ◽  
Author(s):  
Emre Ozel ◽  
Yonca Korkmaz ◽  
Nuray Attar

Abstract Aim The aim of this in vitro study was to investigate the cervical microleakage and internal voids of nanocomposites comparing them with a hybrid composite in Class II restorations with the margins located coronal and apical to the cementoenamel junction (CEJ). Methods and Materials Standardized MOD cavities (one cervical margin located in dentin, one in enamel) were prepared in 40 extracted human molars and divided into four groups according to the composite used to restore them (n=10/group). Group 1: Adper Single Bond2/Filtek Supreme XT; Group 2: Excite/Tetric EvoCeram; Group 3: Prime & BondNT/Ceram X; and Group 4 (control) Adper Single Bond2/Filtek Z250. Groups were further divided into subgroups A and B. The “A” subgroups represent the level of the location of the cervial margin at 1 mm coronal to the CEJ, and the “B” subgroups represent the level of the cervical margin located 1 mm apical to the CEJ. After restoration of the cavities with nanocomposites, thermocycling, and immersion in 0.5% basic fuchsin, the dye penetration and internal voids were evaluated under a stereomicroscope. Data were analyzed with the Mann-Whitney U and Kruskal-Wallis tests with the Bonferroni correction for microleakage and with the Chi-square test for internal voids (p<0.05). Results The microleakage in the A subgroups was statistically significantly lower then B subgroups (p<0.05). No statistically significant difference was observed in terms of interface, cervical, and occlusal voids for all groups (p>0.05). No significant difference was observed between each group for three voids in all groups (p>0.05). Conclusion The location of the gingival margin affects the microleakage of nanocomposites but has no significant affect on the internal voids. Clinical Significance Gingival margin located 1 mm coronal to the CEJ provided a reduction in cervical microleakage in nanocomposite restorations. Citation Ozel E, Korkmaz Y, Attar N. Influence of Location of the Gingival Margin on the Microleakage and Internal Voids of Nanocomposites. J Contemp Dent Pract 2008 November; (9)7:065-072.


2021 ◽  
Author(s):  
Jeonggeun Moon ◽  
Pyung Chun Oh ◽  
Kyounghoon Lee ◽  
Ho-Jun Jang ◽  
Tae-Hoon Kim ◽  
...  

Abstract Question: What is the association between height loss and cardio-/cerebrovascular disease (CVD) incidence?Method: The data we obtained is a sample cohort data provided by NHIS from 2002 to 2015. The chi-square test and the Kruskal-Wallis test were used to see the group differences in demographic characteristics. To compute the primary and secondary outcomes, we used the Cox proportional-hazard model, Kaplan-Meier survival curve, and logistic regression.Results: The cumulative MACCE incidence rate was 3.6 % for Group 1, 4.5 % for Group 2, and 5.2 % for Group 3. Group 3 had a significantly higher incidence of MACCE than Group 1 (Group 1: hazard ratio [HR] = 1.46, 95 % confidence interval [CI] = 1.32-1.62; Group 2: HR = 1.27, 95 % CI = 1.17-1.37). In the model adjusted for age, sex, comorbidities, income level, body mass index, smoking, and drinking status, the MACCE risk was 1.25 times higher in Group 3 than Group 1 (95 % CI = 1.13-1.40).Conclusion: The degree of height loss was independently associated with CVD occurrences in the Korean population.


2005 ◽  
Vol 103 (4) ◽  
pp. 642-648 ◽  
Author(s):  
Yuri M. Andrade-Souza ◽  
Gelareh Zadeh ◽  
Meera Ramani ◽  
Daryl Scora ◽  
May N. Tsao ◽  
...  

Object. The aim of this study was to validate the radiosurgery-based arteriovenous malformation (AVM) score and the modified Spetzler—Martin grading system to predict radiosurgical outcome. Methods. One hundred thirty-six patients with brain AVMs were randomly selected. These patients had undergone a linear accelerator radiosurgical procedure at a single center between 1989 and 2000. Patients were divided into four groups according to an AVM score, which was calculated from the lesion volume, lesion location, and patient age (Group 1, AVM score < 1; Group 2, AVM score 1–1.49; Group 3, AVM score 1.5–2; and Group 4, AVM score > 2). Patients with a Spetzler—Martin Grade III AVM were divided into Grades IIIA (lesion > 3 cm) and IIIB (lesion < 3 cm). Sixty-two female (45.6%) and 74 male (54.4%) patients with a median age of 37.5 years (mean 37.5 years, range 5–77 years) were followed up for a median of 40 months. The median tumor margin dose was 15 Gy (mean 17.23 Gy, range 15–25 Gy). The proportions of excellent outcomes according to the AVM score were as follows: 91.7% for Group 1, 74.1% for Group 2, 60% for Group 3, and 33.3% for Group 4 (chi-square test, degrees of freedom (df) = 3, p < 0.001). Based on the modified Spetzler—Martin system, Grade I lesions had 88.9% excellent results; Grade II, 69.6%; Grade IIIB, 61.5%; and Grades IIIA and IV, 44.8% (chi-square test, df = 3, p = 0.047). Conclusions. The radiosurgery-based AVM score can be used accurately to predict excellent results following a single radiosurgical treatment for AVM. The modified Spetzler—Martin system can also predict radiosurgical results for AVMs, thus making it possible to use this system while deciding between surgery and radiosurgery.


Animals ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 480
Author(s):  
Martina Zappaterra ◽  
Laura Menchetti ◽  
Leonardo Nanni Costa ◽  
Barbara Padalino

This study aimed at documenting whether dromedary camels have a preference for shade and how their behavior would change depending on the presence of shade and variable space allowance. A total of 421 animals kept in 76 pens (66 with shelter (Group 1), and 10 without shelter (Group 2)) at the camel market in Doha (Qatar) were recorded for 1 min around 11:00 a.m. when the temperature was above 40 °C. The number of animals in the sun and shade and their behaviors were analyzed using an ad libitum sampling method and an ad hoc ethogram. The results of a chi-square test indicated that camels in Group 1 had a clear preference for shade (p < 0.001). The majority of Group 1 camels were indeed observed in the shade (312/421; 74.11%). These camels spent more time in recumbency and ruminating, while standing, walking, and self-grooming were more commonly expressed by the camels in the sun (p < 0.001). Moreover, locomotory stereotypic behaviors (i.e., pacing) increased as space allowance decreased (p = 0.002). Based on the findings of this pilot study, camels demonstrated a preference for shade; shade seemed to promote positive welfare, while overcrowding seemed to trigger stereotypy and poor welfare. Overall, our preliminary results are novel and provide evidence that shaded areas are of paramount importance for camel welfare. Further research, involving designed studies at multiple locations is needed to confirm these results.


2015 ◽  
Vol 27 (1) ◽  
pp. 263 ◽  
Author(s):  
R. H. Alvarez ◽  
F. L. N. Natal ◽  
R. M. L. Pires ◽  
K. M. R. Duarte ◽  
C. A. Oliveira

The injection of a low dose of eCG has the potential to induce multiple ovulation and pregnancies in cattle. The present study aimed to evaluate the ovarian response, conception rate and incidence of twin pregnancies of cyclic cows receiving 1 of 2 low doses of eCG. Multiparous Nellore (Bos t. indicus) cows with plasma progesterone levels >1 ng∙mL–1 on at least one of 2 blood samples collected at 10-day intervals (Day –10 and Day 0) received an intramuscular (IM) injection of 2 mg of oestradiol benzoate (EB; Estrogin®, AUSA, São Paulo, Brazil) and a vaginal device (DIP) containing 1 g of progesterone (Primer®, Tecnopec, São Paulo, SP, Brazil) on Day 0. On Day 8, the DIP was removed and cows received an IM injection of 150 μg of cloprostenol (Veteglan®, Hertape Calier, Juatuba, MG, Brazil). At this time, the animals were randomly distributed into 3 groups. Group 1 (n = 30) received an IM injection of 2 mL of saline, whereas groups 2 (n = 41) and 3 (n = 23) received 600 IU and 900 IU of eCG (Novormon® MSD Saude Animal, São Paulo, Brazil), respectively. Twenty-four hours later (Day 9), all groups received 1 mg of EB and were submitted to fixed-time artificial insemination (FTAI) 30 h later (i.e. 54 h after DIP removal). Oestrus observation was performed daily from the time of the withdrawal of the DIP until the day of FTAI. Ovaries were examined ultrasonically at the time of FTAI, the following day and 7 days after FTAI. Pregnancy diagnosis was done by ultrasonography 30 days after FTAI and the incidence of twin or single calves was recorded at birth. Data were analysed by chi-square test. The rate of expression of oestrus was 70.0% (group 1), 82.9% (group 2), and 78.2% (group 3; P = 0.25). Cows that had 2 or more large follicles at the time of FTAI was 0% (group 1), 14.6% (group 2), and 34.8% (group 3; P < 0.05). The ovulation rate of cows in group 1 (80.0%) was higher than cows in groups 2 (48.8%) and 3 (52.2%; P < 0.05). The conception rates for groups 1, 2, and 3 were 50.0, 26.8, and 39.1%, respectively (P < 0.05). Two animals in group 3, one in group 2, and none of group 1 had twin pregnancies on Day 30 after FTAI. Only one of these cows (group 3) had a twin calving. It was concluded that the injection of 600 or 900 IU eCG, in an oestradiol/progestogen FTAI protocol does not result in an increase in the rate of twin calvings, but may negatively affect pregnancy rates of cyclic Nellore cows.Financial support was provided by FAPESP (proc. 2011/13096–0).


2014 ◽  
Vol 2 (11_suppl3) ◽  
pp. 2325967114S0012
Author(s):  
Mehmet Hasan Tatari ◽  
Vugar Guliyev

Objectives: Anterior cruciate ligament (ACL) injury is a common disorder in athletes and in most cases, meniscal tears accompany. These meniscal tears can be the result of the initial trauma or the consecutive injuries in the unoperated patients. The aim of the study was to compare the incidence of meniscal tears in the patients operated because of ACL defficiency in the early or late period after the initial trauma. The age of the patient and meniscal tear pattern were the other subjects compared. Methods: The groups included 42, 72 and 129 patients respectively. Among all groups, it was shown that in 125 cases (% 51.4), a meniscal tear accompanied the ACL tear. In Group 1, 18 cases (% 42.8) had meniscal tears while 29 patients (% 37) in Group 2 and 78 patients (% 60.4) in Group 3 had any kind of meniscal tear. Bucket handle tears constituted 38 % of all tears in Group 1, 53 % in Group 2 and 56 % in Group 3. There was a significant statistical difference between the groups among the presence of meniscal tear and the period between the initial trauma and operation time. When the patients accepted the operation in the first six months after the initial trauma, the incidence of the meniscal injury decreased significantly (chi-square test) (p <0,01). There was no statistical difference between three groups among the percentage of bucket handle tears (variance analysis: p=0,196). The statistical difference was not important between the groups among the age of the patients in relation with the pattern of the meniscal tears (variance analysis: p=0,236). Results: The groups included 42, 72 and 129 patients respectively. Among all groups, it was shown that in 125 cases (% 51.4), a meniscal tear accompanied the ACL tear. In Group 1, 18 cases (% 42.8) had meniscal tears while 29 patients (% 37) in Group 2 and 78 patients (% 60.4) in Group 3 had any kind of meniscal tear. Bucket handle tears constituted 38 % of all tears in Group 1, 53 % in Group 2 and 56 % in Group 3. There was a significant statistical difference between the groups among the presence of meniscal tear and the period between the initial trauma and operation time. When the patients accepted the operation in the first six months after the initial trauma, the incidence of the meniscal injury decreased significantly (chi-square test) (p <0,01). There was no statistical difference between three groups among the percentage of bucket handle tears (variance analysis: p=0,196). The statistical difference was not important between the groups among the age of the patients in relation with the pattern of the meniscal tears (variance analysis: p=0,236) Conclusion: We can say that the incidence of meniscal tears can be decreased if the patients with ACL injury are operated early after the initial trauma. Earlier ACL reconstruction means less meniscal tear.


2021 ◽  
Vol 12 (4) ◽  
pp. 20-26
Author(s):  
A. D. Fabrikant ◽  
T. I. Botasheva ◽  
A. N. Rymashevsky ◽  
Yu. A. Petrov ◽  
N. V. Palieva ◽  
...  

Objective: To study the obstetric pathology and delivery outcomes in pregnant women with gestational diabetes depending on the sex of the fetus.Materials and Methods: A retrospective analysis of 2014 histories of pregnancy and childbirth of women with gestational diabetes (GD) over the period of 2018-2021, was carried out. Two groups were formed based on the sex of the fetus: Group 1 (1012 pregnant women) with male fetuses and Group 2 (1002 pregnant women) with female fetuses. For statistical analysis, the proportions (%) were compared using the Pearson’s χ2 (chi-square) test.Results: It was proved that the male sex of the fetus is a risk factor for the GD and concomitant obstetric complications (placental insufficiency, risk of preterm birth, fetal macrosomia). The prevalence of hypotonic bleeding, defects of the placenta, and placenta increta, and related cases of manual control of the uterine cavity and uterus extirpation in mothers of boys with GD was established. Also, in patients of this group, birth injuries consisting in a rupture of the posterior labial commissure were significantly more often registered as a result of childbirth with a large fetus, while cases of cervical rupture prevailed in women with female fetuses.Conclusions: The revealed dependence of the nature of obstetric complications and the course of labor on the sex of the fetus in pregnant women with GD warrant developing a monitoring system that takes into account the gender of the fetus.


Author(s):  
Sweekriti Mishra ◽  
BM Rashmi ◽  
K Ravishankar ◽  
Sanober Khan ◽  
Anoop Sharma ◽  
...  

Introduction: Since literature provides various schools of thought to achieve Posterior Palatal Seal (PPS) in a maxillary denture, it becomes essential to know the techniques dominating in our curriculum presently. Aim: To determine the prevalence of concepts and also the need for standardisation in establishing PPS among dental colleges of Karnataka. Materials and Methods: A descriptive survey was conducted among teaching faculty of Department of Prosthodontics with varied teaching experience across the dental colleges of Karnataka. A pre-tested questionnaire containing ten close ended questions was distributed to 230 faculty members with MDS qualification in Prosthodontics via e-mail. The faculty responses were divided into three groups based on teaching experience: Group 1 (2-7 years), Group 2 (7-12 years) and Group 3 with more than 12 years of teaching experience. The Chi-Square Goodness of Fit test was used to compare the overall differences in the responses by the study participants; and Independent Chi-Square test to compare the differences in the responses based on teaching experience of the study participants. A value of p<0.05 was considered as statistically significant. Results: The most common method taught for locating vibrating line was Phonation-Nose Blowing-Fovea Palatini (46.0%). Two-line concept of vibrating line was taught (77%) more commonly, where the termination of maxillary denture is on posterior vibrating line (58%). Currently, Boucher’s conventional method without master cast scoring (63%) was the most favoured method to record the seal. This was true mainly with Group 1 (81.9%) and Group 2 (66.7%). In contrast, Group 3 faculty largely advocated Boucher’s conventional technique along with master cast scoring (70%). Overall most of the faculty members (66.5%) did not make the students score the postpalatal area. This was mainly seen in faculty belonging to Group 1 (81.9%) and Group 2 (69.7%). Bulk of Group 3 faculty (75%) taught scoring of the master cast. A large portion of the faculty (60.0%) recommended standardisation in the methods of teaching PPS which was mainly backed by Group 2 (77.3%) and Group 1 (61.7%). Conclusion: This survey indicates that among dental colleges of Karnataka, a majority of faculty of Prosthodontics prefer Boucher’s conventional method without master cast scoring (63%) to achieve maxillary PPS. Nevertheless, teaching concepts differed based on faculty experience. It is emphasised that teaching methods should be standardised and include unambiguous techniques.


2018 ◽  
Vol 25 (11) ◽  
pp. 1643-1648
Author(s):  
Hamid Saeed ◽  
Muhammad Zia Ur Rehman ◽  
Samee Javed Bhatti ◽  
Aamir Furqan

Objectives: The objective is to compare the radiological outcome of closedinterlock intramedullary nailing versus dynamic compression plating in closed tibial fracture.Study Design: Randomized controlled trials. Setting: Department of orthopedics NishtarHospital Multan. Period: 9th July 2016 to March 2017. Methodology: There were 302 patientsdivided in two equal groups of 151. Permission was taken from the ethical committee of NishtarHospital. The 302 patients in age group 20-50 years of both genders meeting the inclusionand exclusion criteria attending the outpatient clinic or admitted to the orthopedics departmentthrough emergency were included in the study. All the data entered and analyzed usingcomputer software SPSS version 10. For quantitative variables like age and duration of fracturemean and standard deviation was calculated. For categorical variables like gender, malunionand infection frequency and percentage were calculated. Chi-square test was applied tocompare the malunion and infection in both groups. A p value 0.05 was considered statisticallysignificant. Results: The 100% (n=302) patients were divided into 2 groups equally, 151 ineach, i.e. intramedullary nail (group 1) and dynamic compression plating (group 2). The mainoutcome variables of this study were the malunion and infection. It was observed that malunionpresented as 57% (n=86) and 70.9% (n=107) in group 1 and group 2 respectively. It was alsoobserved that infection presented as 23.2% (n=35) and 37.1% (n=56) in group 1 and group 2respectively. After applying chi-square test, it was noted that malunion associated with groupshaving p-value 0.012. But it was not associated with gender, stratified age and duration offracture having p-values 0.497, 0.800 and 0.218 respectively. Similarly, after applying chi-squaretest, it was noted that infection associated with gender and groups having p-values 0.007 and0.008 respectively. But it was not associated with stratified age and duration of fracture havingp-values 0.565 and 0.344 respectively. Conclusion: Closed interlock intramedullary nailinghas malunion and infection rates less than dynamic compression plating. So closed interlockintramedullary nailing is preferred method of closed tibia diaphyseal fracture treatment.


Medicina ◽  
2019 ◽  
Vol 55 (5) ◽  
pp. 133
Author(s):  
Cahit Kural ◽  
Serpil Oguztuzun ◽  
Gülçin Güler Şimşek ◽  
Servet Guresci ◽  
Pınar Kaygın ◽  
...  

Background and objectives: The pathophysiology of tethered cord syndrome (TCS) in children is not well elucidated. An inelastic filum terminale (FT) is the main factor underlying the stretching of the spinal cord in TCS. Our study aimed to investigate the expression of glutathione-S-transferase (GST) in children and fetal FT samples in order to understand the relationship between this enzyme expression and the development of TCS. Materials and Methods: FT samples were obtained from ten children with TCS (Group 1) and histological and immunohistochemical examinations were performed. For comparison, FT samples from fifteen normal human fetuses (Group 2) were also analyzed using the same techniques. Statistical comparison was made using a Chi-square test. Results: Positive GST-sigma expression was detected in eight (80%) of 10 samples in Group 1. The positive GST-sigma expression was less frequent in nine (60%) of 15 samples from Group 2. No statistically significant difference was detected between the two groups (p = 0.197). Conclusions: Decreased FT elasticity in TCS may be associated with increased GST expression in FT. More prospective studies are needed to clarify the mechanism of the GST–TCS relationship in children.


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