Influence of omentoplasty on colonic anastomosis in animals submitted to hemorrhagic shock in rats

PURPOSE: To analyze influence of omentoplasty on anastomosis in descending colon of rats. Rats were submitted to the hypovolemic shock of the hemorrhagic type by the Biomechanical Test of Pressure of Rupture by Liquid Distension (BTPRLD). In addition, establish a type of acute anemia in rats that are provided to the study. METHODS: Comparative study between two groups of animals with ten rats in each one, all submitted to hemorrhagic shock for 30% volemic removal by the carotid artery. An anastomosis was performed in left colon. An anastomosis was performed in the left colon. Group 1 took place anastomosis with Polyvinyl Chloride (P.V.C) film to prevent the adhesions formation on sature line. Group 2 placed the great omentum around the anastomosis. Euthanasia occurred on the fifth day, when the anastomoses were submitted to the biomechanical test of pressure of rupture by liquid distension (BTPRLD). RESULTS: High rupture pressure was gained with omentoplasty group in relation to the group in which anastomosis was protected from adhesions formation. A statistical significance was noted. CONCLUSION: Protection by great omentum has increased the anastomosis resistance of the shocked animals. Also, the proposed hemorrhagic shock type has proven to be useful for this study.

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CD34 immunostain increases sensitivity of the diagnosis of fetal vascular malperfusion in placentas from ex-utero intrapartum treatment

Journal of Perinatal Medicine ◽

10.1515/jpm-2020-0156 ◽

2020 ◽

Vol 0 (0) ◽

Author(s):

Jerzy Stanek

Keyword(s):

Statistical Significance ◽

Treatment Procedure ◽

Fetal Survival ◽

Ex Utero Intrapartum Treatment ◽

Life Threatening ◽

Group 2 ◽

Cd34 Immunostain ◽

The Impact ◽

Diaphragmatic Hernias ◽

Group 1

AbstractShort CommunicationsEXIT (ex-utero intrapartum treatment) procedure is a fetal survival-increasing modification of cesarean section. Previously we found an increase incidence of fetal vascular malperfusion (FVM) in placentas from EXIT procedures which indicates the underlying stasis of fetal blood flow in such cases. This retrospective analysis analyzes the impact of the recently introduced CD34 immunostain for the FVM diagnosis in placentas from EXIT procedures.Objectives and MethodsA total of 105 placentas from EXIT procedures (48 to airway, 43 to ECMO and 14 to resection) were studied. In 73 older cases, the placental histological diagnosis of segmental FVM was made on H&E stained placental sections only (segmental villous avascularity) (Group 1), while in 32 most recent cases, the CD34 component of a double E-cadherin/CD34 immunostain slides was also routinely used to detect the early FVM (endothelial fragmentation, villous hypovascularity) (Group 2). 23 clinical and 47 independent placental phenotypes were compared by χ2 or ANOVA, where appropriate.ResultsThere was no statistical significance between the groups in rates of segmental villous avascularity (29 vs. 34%), but performing CD34 immunostain resulted in adding and/or upgrading 12 more cases of segmental FVM in Group 2, thus increasing the sensitivity of placental examination for FVM by 37%. There were no other statistically significantly differences in clinical (except for congenital diaphragmatic hernias statistically significantly more common in Group 2, 34 vs 56%, p=0.03) and placental phenotypes, proving the otherwise comparability of the groups.ConclusionsThe use of CD34 immunostain increases the sensitivity of placental examination for FVM by 1/3, which may improve the neonatal management by revealing the increased likelihood of the potentially life-threatening neonatal complications.

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POS0888 EPIDEMIOLOGICAL AND CLINICAL DIFFERENCES BETWEEN ANTI-MDA5 PHENOTYPES: DATA FROM A LARGE COHORT (MEDRA5) STUDY

Annals of the Rheumatic Diseases ◽

10.1136/annrheumdis-2021-eular.3837 ◽

2021 ◽

Vol 80 (Suppl 1) ◽

pp. 700.1-700

Author(s):

E. Trallero-Araguás ◽

F. Romero ◽

I. Castellví ◽

V. Ortiz-Santamaria ◽

S. Castañeda ◽

...

Keyword(s):

Internal Medicine ◽

Statistical Significance ◽

Disease Onset ◽

Amyopathic Dermatomyositis ◽

Clinically Amyopathic Dermatomyositis ◽

San Sebastian ◽

Group 3 ◽

Group 2 ◽

Hospital General ◽

Group 1

Background:Idiopathic inflammatory myopathies are a heterogenous group of systemic autoimmune diseases. Several phenotypes have been linked to specific autoantibodies. Clinically amyopathic dermatomyositis with rapidly progressive interstitial lung disease, the most severe form of ILD, is associated with the anti-MDA5 antibodies. However not all the patients with dermatomyositis and anti-MDA5 positive antibodies develop this severe condition.Objectives:We aim to define different phenotypes from a large cohort of patients diagnosed with dermatomyositis who were positive to anti-MDA5 antibodies.Methods:We retrospective analyzed the clinical and immunological data of 90 anti-MDA5 patients [50 female, 55.6%, mean (SD) age at diagnosis 47 (15.4) yrs.] with dermatomyositis recruited from a multicenter register in Spain (MEDRA5) including 30 hospitals. All the patients fulfill de International Myositis Classification Criteria (EULAR/ACR) for dermatomyositis (score >90%). Anti-MDA5 were detected by means of commercial immunoblot (EUROIMMUN©). The chi-square test was used to assess the relationships between qualitative variables. The Kruskal-Wallis test was used to compared medians between groups.Results:Sixty-six patients (73.3%) were diagnosed with clinically amyopathic dermatomyositis. Three different phenotypes linked with the anti-MDA5 antibody were identified. Group 1: patients with rapidly-ILD phenotype (28 patients, 31.1%), group 2: antisynthetase-like phenotype (23 patients, 25.5%), and group 3: non-ILD phenotype (39 patients, 43.3%). Clinical and immunological comparison between the groups disclosed that age at disease onset was higher (median, IQR) in patients from group 1 [53 (43-60)] vs. group 2 [46 (40-56)] or group 3 [42(41-51)] (p=0.01); disease onset was more frequent in spring in patients from group 1 (46.5%) than in the rest of the groups (21.7% and 28.9%) (p<0.01). Cancer was detected in 7 patients, only associated with myositis in 3 cases (3 years interval between cancer and dermatomyositis) without significant differences between phenotypes. Vasculitis (one case ANCA positive) was detected in 9 cases (6 limited to skin, 1 renal and 1 intestinal), 6 of them in the group 3 (statistical significance, in comparison with group 1 and 2, p<0.01). Mortality rate was higher in group 1 (51.9%, 16 out of 17 due to refractory respiratory failure) vs group 2 (12.5%) or 3 (0%) (p<0.001). Anti Ro52 positivity was more frequent in group 1 (65.4%) vs. group 2 (25%) or 3 (35.5%) (p<0.017), although it did not reach statistical significance in terms of mortality (p=0.173) or patients admitted in the intensive care unit (p=0.173). Mechanic hands were more frequent in group 2 (40.6%) than in groups 1 (25%) and 3 (34.4%) (p=0.05). Fever was significantly most frequent in group 1(52.6%) than in group 2 (21.1%) and 3 (26.3%) (p=0.001). Other clinical or immunological features such as arthritis, myositis, or the number of characteristic skin lesions among others were not more frequent in one group or another.Conclusion:Three different phenotypes of patients positive to anti-MDA5 were identified. The presence or not of ILD, or the different type (rapidly progressive or not) of ILD were the main feature that allow to differentiate these phenotypes, which are relevant in clinical practice.References:[1]Allenbach Y, Uzunhan Y, Toquet S, et al; French Myositis Network. Different phenotypes in dermatomyositis associated with anti-MDA5 antibody: Study of 121 cases. Neurology. 2020;95: e70-e78.Acknowledgements:List of contributors of MEDRA5 group: Aguilar-García J (Internal Medicine, Hospital Costa del Sol, Marbella), Carrión-Barberá I (Rheumatology, Hospital del Mar, Barcelona), Cobo-Ibañez T (Rheumatology, Hospital Infanta Sofía, San Sebastián de los Reyes), de Escalante-Yangüela B (Internal Medicine, Hospital Clínico Lozano Blesa, Zaragoza), Fonseca-Aizpuru EM (Internal Medicine, Hospital de Cabueñes, Gijón), González-Cubillo L (Intensive Medicine, Hospital Universitario de Cruces, Barakaldo), González-Gay MA (Rheumatology, Hospital Marqués de Valdecilla, Santander), Prieto-González S (Internal Medicine, Hospital Clinic, Barcelona), Ruiz-Román A (Rheumatology, Hospital Universitario Virgen del Rocío, Sevilla), Calero-Paniagua I (Internal Medicine, Hospital Virgen de la Luz, Cuenca), Callejas-Rubio JL (Internal Medicine, Hospital Clínico San Cecilio, Granada), Gil-Vila A (Internal Medicine, Hospital Vall d’Hebron, Barcelona), de Miguel-Campo B (Internal Medicine, Hospital Doce de Octubre, Madrid), García-Sevilla R (Pneumology, Hospital General Universitario de Alicante, Alicante), Iriarte-Fuster A (Internal Medicine, Hospital de Bellvitge, Hospitalet de Llobregat), Jovani-Casano V (Rheumatology, Hospital General Universitario de Alicante, Alicante), Lozano-Rivas N (Rheumatology, Hospital Virgen de la Arritxaca, Murcia), Martín-Gascón M (Internal Medicine, Hospital Morales Meseguer, Murcia), Martinez-González O (Rheumatology, Hospital Universitario de Salamanca, Salamanca), Monteagudo-Jiménez M (Internal Medicine, Hospital Parc Taulí, Sabadell), Mora-Ortega GM (Pneumology, Hospital Universitario Infanta Sofía, San Sebastián de los Reyes), Moral-Moral Pedro (Internal Medicine, Hospital Universitari i Politecnic La Fe, Valencia), Pérez-De Pedro I (Interna Medicine, Hospital Regional Universitario de Málaga, Málaga), Picazo-Talavera MR (Rheumatology, Hospital del Sureste, Madrid), Rubio-Rivas M (Internal Medicine, Hospital de Bellvitge, Hospitalet de Llobregat)Disclosure of Interests:None declared

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MRI Spectrum of Japanese Encephalitis in Northeast India: A Cross-Sectional Study

Journal of Neurosciences in Rural Practice ◽

10.1055/s-0041-1722820 ◽

2021 ◽

Vol 12 (02) ◽

pp. 281-289

Author(s):

Pranjal Phukan ◽

Kalyan Sarma ◽

Barun Kumar Sharma ◽

Deb K. Boruah ◽

Bidyut Bikash Gogoi ◽

...

Keyword(s):

Japanese Encephalitis ◽

Statistical Significance ◽

Tertiary Care ◽

Care Hospital ◽

Mri Findings ◽

Mri Scan ◽

Cross Sectional ◽

Adc Value ◽

Group 2 ◽

Group 1

Abstract Objective Japanese encephalitis (JE) is an arthropod-borne flavivirus infection having high mortality and morbidity. This study was performed to evaluate the conventional magnetic resonance imaging (MRI) findings in JE and to find out any difference between pediatric and adult JE. Materials and Methods This retrospective study was performed on serologically positive 54 JE patients presented to a tertiary care hospital with acute encephalitic symptoms between April 2016 and October 2019. Relevant neurological examination, cerebrospinal fluid analysis, and MRI scan of the brain were performed. Results Fifty-four JE patients (n = 31 males and n = 23 females) having 32 pediatric and 22 adult JE were included in the study sample. Group 1 JE (n = 16) patients had encephalitic symptoms with duration less than 15 days up to the day of MRI scan and group 2 JE (n = 38) had symptoms more than 15 days. Group 1 JE had mean apparent diffusion coefficient (ADC) value of 0.563 ± 0.109 (standard deviation [SD]) × 10–3 mm2/sec and group 2 JE had 1.095 ± 0.206 (SD) × 10–3 mm2/sec. The mean ADC value of pediatric JE was 0.907 ± 0.336 (SD) × 10–3 mm2/sec and adult JE was 0.982 ± 0.253 (SD) × 10–3 mm2/sec. Conclusion The majority of the JE patient shows abnormal signal alterations in bilateral thalami and substantia nigra. Diffusion-weighted imaging with ADC mapping helps in evaluating the stage of the JE. No statistical significance of the various conventional MRI findings was found between the pediatric JE and adult JE.

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Impact of percutaneous embolization versus subinguinal microsurgical ligation on semen parameters in primary varicocele patients: comparative study

Egyptian Journal of Radiology and Nuclear Medicine ◽

10.1186/s43055-020-00370-4 ◽

2020 ◽

Vol 51 (1) ◽

Author(s):

Haytham M. Nasser ◽

Ahmed Hussein ◽

Gad M. Behairy ◽

Mostafa Abdo

Keyword(s):

Sperm Count ◽

Semen Analysis ◽

Statistical Significance ◽

Semen Parameters ◽

Male Factor ◽

Percutaneous Embolization ◽

Significant Difference ◽

Group 2 ◽

Group 1

Abstract Background Varicocele is an abnormally dilated pampiniform plexus of the veins within the spermatic cord and is considered the most common correctable cause of male factor infertility. Many approaches are described for treatment either surgical (tradition inguinal, subinguinal, and laparoscopic) or non-surgical percutaneous embolization. During the period from August 2017 to December 2018, we prospectively analyzed the preoperative and post-operative alteration of semen parameters (at 3 and 9 months) of the data collected from 63 patients with clinically evident varicocele referred to our tertiary hospital. Patients were divided into two groups: group 1, thirty-three patients who underwent subinguinal microsurgical ligation, and group 2, thirty patients who underwent percutaneous embolization. Results Sixty-three patients enrolled in this study were divided in two groups: group 1, patients who underwent surgery, and group 2, patients who underwent embolization; the mean age is 24.6 ± 1.27 years in group 1 and 23.7 ± 2 years in group 2; there was no statistically significant difference between the two groups as regards BMI, diabetes, hypertension, and smoking. Bilaterality was present in 15.2% of group 1 patients and 10% in group 2 patients (P value 0.06). Most of the patients were classified as grades 2 and 3 with no statistical significance regarding severity of the disease. Preoperative semen parameters for patients including sperm count, motility, and abnormal forms showed no statistically significant difference between the two groups. Post-intervention semen analysis was done twice during follow-up after 3 months and 9 months from the date of intervention. After 3 months, the semen parameters were improved in both groups in spite of the higher sperm count in group 2 but with no statistical significance. After 9 months follow-up, semen analysis showed persistent increase in sperm mobility in group 1 patients in comparison to group 2 patients. Both groups had better improvement in count of normal form with no statistical significant change. Conclusion Improvement of semen parameters while treating primary varicocele by either subinguinal microsurgery approach or percutaneous embolization shows equivalent outcomes.

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The use of an antagonist 5-HT2a/c for depression and motor function in Parkinson' disease

Arquivos de Neuro-Psiquiatria ◽

10.1590/s0004-282x2009000300007 ◽

2009 ◽

Vol 67 (2b) ◽

pp. 407-412 ◽

Cited By ~ 25

Author(s):

Antonio Luiz dos Santos Werneck ◽

Ana Lucia Rosso ◽

Maurice Borges Vincent

Keyword(s):

Parkinson Disease ◽

Motor Function ◽

Rating Scale ◽

Statistical Significance ◽

Psychotic Symptoms ◽

Initial Moment ◽

The Mean ◽

Group 2 ◽

To Receive ◽

Group 1

OBJECTIVE: To test the ability of a 5HT2a/c (trazodone) antagonist, to improve depression and motor function in Parkinson' disease (PD). METHOD: Twenty PD patients with and without depression were randomly assigned to receive trazodone (group 1) or not (group 2). They were evaluated through UPDRS and Hamilton Depression Rating Scale (HAM-D). RESULTS: For the UPDRS the mean score of group 2 was 33.1 ± 19.7 and 37.1 ± 18.0 at the end. For the group 1, the corresponding scores were 31.4 ± 11.3 and 25.9 ± 13.7. The variations in the Mann-Whitney test were 0.734 at the initial moment and 0.208 at the final moment. The variation in the comparison of the initial moment with the final moment was 0.005 providing statistical significance. For the HAM-D, the mean score went up 4 points in group 2, contrary to a 5.5 points decrease in group 1. CONCLUSION: Data analysis shows that this agent significantly improves depression, but the motor function improved only in the depressed patients. Because of the known anti-dopaminergic property of the 5-HT2c receptors, a possible approach for depression in PD could be the use of 5-HT2c antagonists, similarly to the use of atypical neuroleptics in case of psychotic symptoms.

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Comparison of ICU Outcomes between Intravenous Immunoglobulin and Plasma Exchange in Treatment of Mechanically Ventilated Patients with GuillainBarré Syndrome in a Neuro-Intensive Care Unit in a Govt. Hospital of Bangladesh: A Observational Cohort Study

Journal of National Institute of Neurosciences Bangladesh ◽

10.3329/jninb.v5i2.43015 ◽

2019 ◽

Vol 5 (2) ◽

pp. 118-122

Author(s):

Uzzwal Kumar Mallick ◽

Mohammad Shah Jahirul Hoque Chowdhury ◽

Mohammad Enayet Hussain ◽

Mohammad Asaduzzaman ◽

Md Sirajul Islam ◽

...

Keyword(s):

Intensive Care Unit ◽

Intensive Care ◽

Intravenous Immunoglobulin ◽

Statistical Significance ◽

Axonal Neuropathy ◽

Male Predominance ◽

Icu Stay ◽

The Mean ◽

Group 2 ◽

Group 1

Background: The management of Guillain-Barré Syndrome is very crucial for the outcome of the patient. Objective: The aim of the study was to compare efficacy of IvIg(Intravenous Immunoglobulin) versus PE(Plasmaexchange) in treatment of mechanically ventilation adults with GBS in neuro-intensive care unit of Bangladesh. Methodology: Thiswas a prospective, observationalcohort study, in a Neuro-ICU from 2017 to 2018. We included all patients with GBS who required mechanical ventilation (MV). We defined two groups: group 1 (group treated by IvIg: 0.4 g/kg/day for 5 days) and group 2 (group treated by PE: 5 PE during 10days, every alternate day). We collectedclinical and therapeutic aspects and outcome. Results: A total number of 49 patients (34 in group 1 and 15 in group 2) were enrolled. The mean age was 37.4±9.2 years, with a male predominance (65.3%). on electrophysiological findings, in 4(32.7%) patients had acute inflammatory demyelinating polyradiculoneuropathy (AIDP) and acute motor axonal neuropathy (AMAN) in 26 (53.1%) patients and acute motor-sensory axonal neuropathy (AMSAN) was 3(6.1%)and NCS was not done in 4(8.2%) cases. The mean length of ICU stay was 20±19.10 days and 46.60±30.02 days in IVIG and PE group respectively. The ICU stay was significantly shorter (p = 0.001) in the IvIg group than PE group. Patients receiving IvIg were early weaned of MV (p = 0.002) compared to those receiving PE with a statistical significance. Also, duration of M/V (P=.002), Need of tracheostomy (p=.005) and over all surval rate (p=.007) was significantly in favoue of IvIg group than PE group. Out of 49 patients, total 3 patients were died and they all were AMAN variety. Conclusion: Our work reveals a meaningful difference for the MV duration, ICU stay, weaning and excellent recovery in IvIg group compared to PE group in terms of less complcations. Journal of National Institute of Neurosciences Bangladesh, 2019;5(2): 118-122

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Prevention of Delayed Nausea: A University of Rochester Cancer Center Community Clinical Oncology Program Study of Patients Receiving Chemotherapy

Journal of Clinical Oncology ◽

10.1200/jco.2011.39.8123 ◽

2012 ◽

Vol 30 (27) ◽

pp. 3389-3395 ◽

Cited By ~ 40

Author(s):

Joseph A. Roscoe ◽

Charles E. Heckler ◽

Gary R. Morrow ◽

Supriya G. Mohile ◽

Shaker R. Dakhil ◽

...

Keyword(s):

Statistical Significance ◽

Cancer Center ◽

Double Blind ◽

Group 4 ◽

Community Clinical Oncology Program ◽

Delayed Nausea ◽

Group 3 ◽

Group 2 ◽

Mean Differences ◽

Group 1

Purpose We conducted a double-blind randomized clinical trial of the following four regimens for controlling delayed nausea (DN): group 1: palonosetron + dexamethasone on day 1 with prochlorperazine on days 2 and 3; group 2: granisetron + dexamethasone on day 1 with prochlorperazine on days 2 and 3; group 3: aprepitant + palonosetron + dexamethasone on day 1 with aprepitant + dexamethasone on days 2 and 3; and group 4: palonosetron + dexamethasone on day 1 with prochlorperazine + dexamethasone on days 2 and 3. Patients and Methods Chemotherapy-naive patients received doxorubicin, epirubicin, cisplatin, carboplatin, or oxaliplatin. The primary end point was average nausea assessed four times daily on days 2 and 3. Primary analyses were whether nausea control would be improved by using palonosetron versus granisetron on day 1 (group 1 v group 2); by adding dexamethasone on days 2 and 3 (group 1 v group 4); and by using aprepitant versus prochlorperazine (group 3 v group 4). Statistical significance was set at P = .017. Results Two hundred thirty-four, 234, 241, and 235 evaluable patients were accrued to groups 1, 2, 3, and 4, respectively. Adjusted mean differences for the three planned analyses were as follows: palonosetron versus granisetron: −0.01 (95% CI, −0.23 to 0.20; P = .72); adding dexamethasone on days 2 and 3: 0.20 (95% CI, −0.02 to 0.41; P = .01); and using aprepitant versus prochlorperazine: −0.03 (95% CI, −0.24 to 0.19; P = .56). Conclusion The addition of dexamethasone on days 2 and 3 reduced DN. Palonosetron and granisetron have similar effects on DN. The beneficial effect of adding aprepitant for control of DN was the same as adding prochlorperazine.

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Is there a role for music in reducing anxiety in plastic surgery minor operations?

Annals of The Royal College of Surgeons of England ◽

10.1308/003588412x13171221501861 ◽

2012 ◽

Vol 94 (3) ◽

pp. 152-154 ◽

Cited By ~ 11

Author(s):

H Sadideen ◽

A Parikh ◽

T Dobbs ◽

A Pay ◽

PS Critchley

Keyword(s):

Local Anaesthetic ◽

Clinical Care ◽

Statistical Significance ◽

Patient Anxiety ◽

Vas Score ◽

The Mean ◽

Anxiety Levels ◽

Group 2 ◽

Surgical Setting ◽

Group 1

Introduction It is well documented that music plays a role in reducing anxiety levels. Its role in reducing intra-operative anxiety levels in surgical patients while awake is less well known. We report the effects of music on intra-operative patient anxiety in both the elective and trauma plastic surgical setting. Methods Two groups of patients undergoing local anaesthetic surgical procedures were identified: those where music was played in the operating theatre (Group 1) and those where it was not (Group 2). Ninety-six patients were included. Subjectively anxiety was evaluated by the patient with a visual analogue scale (VAS) and objectively by the respiratory rate (RR), both pre and post-operatively. The unpaired t-test was used to evaluate the statistical significance of differences between the groups. Results The mean pre-operative VAS score was similar in both groups (5.7 in Group 1 and 5.8 in Group 2). The mean preoperative RR was 15 breaths per minute in both groups. Post-operatively, the VAS score and RR were both lower in Group 1 (VAS: 3.5 vs 4.9; p<0.01 and RR: 11 vs 13 breaths per minute; p<0.05). Conclusions In the era of the patient centred approach to clinical care, it is crucial to minimise patient anxiety. Music appears to reduce intra-operative anxiety in awake patients in both the elective and trauma plastic surgical setting. Easy listening music and chart classics appear to be suitable genres according to patients. We believe there is a role for a large, multicentre, randomised control study to examine the benefits of music in all local anaesthetic procedures across different specialties.

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Effectiveness of NaOCl alone or in combination with EDTA on the diffusion of hydroxyl ions released by calcium hydroxide paste

Journal of Applied Oral Science ◽

10.1590/s1678-77572006000100001 ◽

2006 ◽

Vol 14 (1) ◽

pp. 1-5 ◽

Cited By ~ 3

Author(s):

Mara Cristina Santos Felippe ◽

Wilson Tadeu Felippe ◽

Catherine Schmitz Espezim ◽

Sérgio Fernando Torres de Freitas

Keyword(s):

Calcium Hydroxide ◽

Root Canal ◽

Statistical Significance ◽

Distilled Water ◽

Mechanical Preparation ◽

Group 3 ◽

Group 2 ◽

Water Canals ◽

Group 1

AIM: To evaluate the effect of different irrigant solutions employed during removal and replacement of calcium hydroxide paste on the diffusion of hydroxyl ions through root canal dentine in vitro. METHODOLOGY: Thirty-five maxillary and mandibular human canines with straight and fully developed roots were used. After mechanical preparation up to 1mm short of tooth length, 30 canals were filled with calcium hydroxide paste and 5 canals were left empty; all teeth had their coronal accesses properly sealed. Teeth were placed in plastic containers with distilled water, and pH was read after 30 days when the paste from 20 teeth was renewed. After removal of the paste by endodontic instrumentation and irrigation with distilled water, canals were replenished with newly mixed paste in Group 1 and 2. In these groups, final irrigation was conducted with 5 mL of EDTA followed by 5 mL of NaOCl in specimens in Group 1, and 5 mL of NaOCl only in specimens in Group 2. In 10 teeth the paste was not replenished at 30 days (Group 3). All specimens were returned to the containers with fresh distilled water, and the pH was recorded after another 30 days. The differences between the first (30d) and second (60d) pH readings were calculated and submitted to analysis of variance and individual comparisons using the Scheffeé's test. RESULTS: Results of mean analysis on differences of pH readings showed that greater diffusion had occurred on specimens in Group 3. Individual comparisons using Scheffeé's test showed statistical significance between Groups 2 and 3, and equivalence between all other groups. CONCLUSION: It was concluded that the use of EDTA did not enhance diffusion of hydroxyl ions through root canal dentine.

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State of the art in breast intraoperative electron radiation therapy after intraoperative ultrasound introduction

Radiology and Oncology ◽

10.2478/raon-2021-0023 ◽

2021 ◽

Vol 0 (0) ◽

Author(s):

Cristiana Vidali ◽

Mara Severgnini ◽

Gabriele Bellio ◽

Fabiola Giudici ◽

Vittorino Milan ◽

...

Keyword(s):

Radiation Therapy ◽

Acute Toxicity ◽

Statistical Significance ◽

Intraoperative Ultrasound ◽

Late Toxicity ◽

Target Thickness ◽

Partial Breast Irradiation ◽

Electron Radiation ◽

Group 2 ◽

Group 1

Abstract Background Breast intraoperative electron radiation therapy (B-IOERT) can be used in clinical practice both as elective irradiation (partial breast irradiation – APBI) in low risk breast cancer patients, and as an anticipated boost. The procedure generally includes the use of a shielding disk between the residual breast and the pectoralis fascia for the protection of the tissues underneath the target volume. The aim of the study was to evaluate the role of intraoperative ultrasound (IOUS) in improving the quality of B-IOERT. Patients and methods B-IOERT was introduced in Trieste in 2012 and its technique was improved in 2014 with IOUS. Both, needle and IOUS were used to measure target thickness and the latter was used even to check the correct position of the shielding disk. The primary endpoint of the study was the evaluation of the effectiveness of IOUS in reducing the risk of a disk misalignment related to B-IOERT and the secondary endpoint was the analysis of acute and late toxicity, by comparing two groups of patients treated with IOERT as a boost, either measured with IOUS and needle (Group 1) or with needle alone (Group 2). Acute and late toxicity were evaluated by validated scoring systems. Results From the institutional patients who were treated between June 2012 and October 2019, 109 were eligible for this study (corresponding to 110 cases, as one patients underwent bilateral conservative surgery and bilateral B-IOERT). Of these, 38 were allocated to group 1 and 72 to group 2. The target thickness measured with the IOUS probe and with the needle were similar (mean difference of 0.1 mm, p = 0.38). The percentage of patients in which the shield was perfectly aligned after IOUS introduction increased from 23% to more than 70%. Moreover, patients treated after IOUS guidance had less acute toxicity (36.8% vs. 48.6%, p = 0.33) from radiation therapy, which reached no statistical significance. Late toxicity turned out to be similar regardless of the use of IOUS guidance: 39.5% vs. 37.5% (p = 0.99). Conclusions IOUS showed to be accurate in measuring the target depth and decrease the misalignment between collimator and disk. Furthermore there was an absolute decrease in acute toxicity, even though not statistically significant, in the group of women who underwent B-IOERT with IOUS guidance.

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