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1.
Niger J Clin Pract ; 26(3): 347-351, 2023 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-37056111

RESUMO

Background: Acute mastoiditis is a suppurative infection of mastoid air cells and is the most common intratemporal complication of otitis media. Aim: This study aimed to evaluate the demographic and clinical characteristics and treatment outcomes of children with acute mastoiditis (AM). Patients and Methods: We retrospectively reviewed the medical records of hospitalized pediatric patients aged between 1 month and 18 years with a diagnosis of AM between May 2015 and December 2021. Results: A total of 28 hospitalized children with AM were enrolled in this study, of whom 22 (78.6%) were males and 6 (21.4%) were females with a mean ± standard deviation age of 93.5 ± 53.2 months (range = 6 months-16.1 years). The most common clinical symptoms were postauricular erythema (n = 17, 60.7%), tenderness (n = 16, 57.1%), swelling (n = 14, 50%), fever (n = 14, 50%), and auricular protrusion (n = 7, 25%). Mastoiditis complications occurred in 10 (35.7%) children. The most common extracranial complication was subperiosteal abscess (n = 8, 28.6%). The erythrocyte sedimentation rate (ESR) and the rate of antibiotic use before hospitalization were higher in patients with complicated mastoiditis (P = 0.006 and P = 0.039, respectively). Surgery was performed in 12 (42.9%) patients. Statistically, more surgical interventions were performed in patients who developed complications (P = 0.003). Conclusion: AM continues as an important disease of childhood. Successful results are obtained with systemic antibiotic therapy and additional surgical intervention as necessary. A careful evaluation of patients with a high ESR and those who received antibiotic therapy before hospitalization is appropriate due to the correlation between these factors and the risk of complication development.


Assuntos
Mastoidite , Masculino , Feminino , Criança , Humanos , Lactente , Mastoidite/complicações , Mastoidite/epidemiologia , Mastoidite/terapia , Estudos Retrospectivos , Centros de Atenção Terciária , Doença Aguda , Antibacterianos/uso terapêutico
2.
Childs Nerv Syst ; 37(10): 3067-3072, 2021 10.
Artigo em Inglês | MEDLINE | ID: mdl-34263340

RESUMO

PURPOSE: Pseudotumor cerebri syndrome (PTC) is characterized by increased intracranial pressure without a space-occupying lesion and a normal cerebrospinal fluid (CSF) composition without evidence of CSF infection. In this study, we aimed to compare the symptoms, signs, and clinical characteristics of patients presenting with a preliminary diagnosis of pseudotumor cerebri syndrome (PTC) who were diagnosed and not diagnosed with PTC. METHOD: We conducted a retrospective study of patients who were referred to our clinic with signs and symptoms of PTC. We compared the patients' symptoms, signs, and clinical characteristics who were diagnosed with PTC with those who were not diagnosed with PTC using modified Dandy criteria. RESULTS: Ninety-four patients with the pre-diagnosis of PTC were included in the study. LP procedure was done in all patients. After LP, 75.3% of the patients were diagnosed with PTC, but 24.7% did not meet the criteria for PTC. A statistically significant relationship was found between the increase in headache complaints when leaning forward, headache that keeps the child from playing, and the CSF pressure level (p = 0.014, p = 0.019; p < 0.05). There was no statistically significant correlation between papilledema and CSF pressure level (p > 0.05). A statistically significant relationship was found between papilledema grade and CSF pressure level (p = 0.038; p < 0.05), and the rate of high CSF pressure in the groups with Grades 2-3 and Grade 4 papilledema was higher than that in the group with Grade 1 papilledema. Cranial nerve 6 palsy (CN6) (p = 0.048) and flattening of the posterior aspect of the globe (FPS) are found independent risk factors (p = 0.004 p < 0.05). CONCLUSIONS: PTC signs and symptoms show variability among pediatric population.


Assuntos
Hipertensão Intracraniana , Papiledema , Pseudotumor Cerebral , Pressão do Líquido Cefalorraquidiano , Criança , Humanos , Papiledema/diagnóstico , Papiledema/etiologia , Pseudotumor Cerebral/complicações , Pseudotumor Cerebral/diagnóstico , Estudos Retrospectivos
3.
Andrologia ; 49(9)2017 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-28000956

RESUMO

Paraoxonase and arylesterase enzymes are corner stones of antioxidant defence. We aimed to compare azoospermic infertile men and normozoospermic individuals with respect to total antioxidant status (TAS), total oxidant status (TOS), oxidative stress index (OSI), paraoxonase and arylesterase levels in the blood and seminal plasma. Two-hundred consecutive infertility patients and voluntarily participated were included. In the normozoospermic group, TAS, PON, arylesterase values were statistically significantly higher when compared with those in the azoospermic group, while lower TOS and OSI levels were observed in the blood and seminal plasma of azoospermic group. In the semen analyses of normozoospermic group, the correlation between semen volume, sperm concentration, sperm motility and morphology and TAS, TOS, OSI, PON and arylesterase values was examined. A negative correlation was determined between semen volume and OSI. Levels of serum oxidative parameters were higher in the azoospermic group relative to normozoospermic group, but antioxidant parameters were lower than those of the normozoospermic group. Oxidative stress performs an essential role in the aetiology of male infertility by negatively influencing sperm quality and function. Assessment of blood and seminal plasma oxidative profiles might be an important tool to better evaluation of sperm reproductive capacity and functional competence.


Assuntos
Antioxidantes/metabolismo , Arildialquilfosfatase/sangue , Azoospermia/sangue , Hidrolases de Éster Carboxílico/sangue , Sêmen/enzimologia , Adulto , Azoospermia/enzimologia , Humanos , Masculino
4.
Andrologia ; 46(9): 963-70, 2014.
Artigo em Inglês | MEDLINE | ID: mdl-24147908

RESUMO

Erectile dysfunction (ED) is the most common male sexual problem worldwide. The association between ED and components of metabolic syndrome (MtS) is well established. This study examined neck circumference (NC) as a possible indicator of MtS and also of ED. Ninety-two patients were included and divided into two groups. Group 1 consisted of 47 patients with ED and Group 2 consisted of 45 healthy volunteers. Questionnaires, differences in anthropometric and laboratory measurements between patients with ED and the control group, and a cut-off value for NC were investigated. The mean NC in ED patients was higher in Group 1 than in Group 2 (P = 0.001), and Group 1 also demonstrated more MtS criteria than Group 2 (P < 0.001). The cut-off point of NC was defined as 34.75 cm for ED and MtS. The cut-off values of waist circumference for ED and MtS were 105.5 and 102.5 cm respectively. In the light of these findings, NC may be a new component of MtS in ED patients. Additionally, NC may be a novel indicator of central obesity and ED. We suggest that NC values of 35 cm and over may predict ED in patients with MtS.


Assuntos
Disfunção Erétil/complicações , Disfunção Erétil/patologia , Síndrome Metabólica/complicações , Síndrome Metabólica/patologia , Pescoço/patologia , Adulto , Índice de Massa Corporal , Estudos de Casos e Controles , Disfunção Erétil/fisiopatologia , Humanos , Masculino , Síndrome Metabólica/sangue , Pessoa de Meia-Idade , Obesidade/complicações , Obesidade/patologia , Projetos Piloto , Fatores de Risco , Turquia , Circunferência da Cintura
5.
Eur Rev Med Pharmacol Sci ; 17(18): 2523-9, 2013 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-24089234

RESUMO

INTRODUCTION: To evaluate indications for intraoperative frozen section (IFS) during robot assisted laparoscopic radical prostatectomy (RALRP) in our series. PATIENTS AND METHODS: Prospectively documented 80 patients with prostate cancer (PCa) who underwent RALRP were evaluated between June 2010 and July 2012. Patients were divided into 2 groups according to whether systematically IFS was performed or not. Group 1 (n=66) consisted of patients on whom systematic IFS was performed, Group 2 (n=14) consisted of patients on whom IFS was not performed. All recorded data evaluated and statistical analyses were performed for determining indications and predictive factors for IFS during RALRP. All patients were operated by single surgeon and IFS, pathological assessments were performed by experienced uro-pathologist. Statistical significant p value was p < 0.05. RESULTS: Mean follow-up was 15±6 (25-4) months. Pre-operative prostate volume in trans- rectal ultrasonography (TRUS) was statistically higher in Group 1 than Group 2 (p = 0.037). The other parameters were statistically similar in both groups. According to outcomes of our study IFS was a dependent factor for positive surgical margin. Additionally, the cut off value of prostate volume in TRUS for IFS was 55.5 cc for IFS. CONCLUSIONS: Preoperative measured prostate volume in TRUS may be an indicator of IFS. Therefore, more accurate information may be given to patients with prostate cancer (Pca) before RALRP by using preoperative prostate volume in TRUS.


Assuntos
Secções Congeladas , Prostatectomia/métodos , Neoplasias da Próstata/cirurgia , Robótica/métodos , Idoso , Humanos , Laparoscopia , Masculino , Pessoa de Meia-Idade , Projetos Piloto , Próstata/diagnóstico por imagem , Próstata/patologia , Ultrassonografia
6.
Eur Rev Med Pharmacol Sci ; 17(1): 123-9, 2013 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-23329533

RESUMO

INTRODUCTION: To evaluate the effects of consistency in preoperative and postoperative Gleason scores to the operation outcomes in patients who underwent laparoscopic radical prostatectomy. MATERIALS AND METHODS: 204 of 347 patients were included the study. 143 patients whose preoperative prostate biopsies were evaluated in the other Institute were not included into the study. The preoperative data of patients and operation outcomes were investigated from institute's files of patients. Patients were divided to three groups by using consistence of pre and postoperative Gleason scores. The tumor, node and metastasis classification were used for staging prostate cancer. RESULTS: Mean age was 63 and the mean PSA level was 11 ng/dl overall. In statistical analysis PSA levels, Gleason score and rate of positive score were significantly low in Group I (p < 0.05). As in operative data, nerve sparing surgical technique was performed statistical significance higher in Group 1 than other Groups. External bleeding rate of Group II was significantly lower than the other Groups. In univariate and multivariate analysis, postoperative pathologic stage was statistical significant for consistency of pre and postoperative Gleason scores. CONCLUSIONS: The modified Gleason scoring system is safe and usable for evaluating prostate biopsies and operative specimens. The consistency in pre and postoperative Gleason score effect the operation technique and also operation outcomes. Working with an experienced uro-pathologist provides to inform patients more accurate and better.


Assuntos
Laparoscopia , Prostatectomia , Neoplasias da Próstata/cirurgia , Idoso , Humanos , Modelos Logísticos , Masculino , Pessoa de Meia-Idade , Gradação de Tumores , Antígeno Prostático Específico/sangue , Neoplasias da Próstata/sangue , Neoplasias da Próstata/patologia , Estudos Retrospectivos
7.
Niger J Clin Pract ; 16(3): 389-91, 2013.
Artigo em Inglês | MEDLINE | ID: mdl-23771468

RESUMO

Pediatric glans penis malformations, especially arteriovenous malformations (AVM), are very rare. Herein, we report two rare cases. A 14-year-old boy attended our outpatient clinic with chief complaints of purple swelling and rapidly growing lesion on the glans penis. The lesion was excised surgically after physical and radiological evaluations. Pathology reported AVM and the patient is being followed up. The second case is a 2-year-old boy who was admitted with a big lesion involving glans penis and genital area that has been present since birth. In physical and radiological evaluations, lesion on the glans penis was pulsatile. Parents of the patient did not want any surgery and patient has been in follow-up. Diagnosis of the vascular lesions on glans penis is very easy by physical and radiological examinations today. Long-term follow-up is very important for AVM. Clinicians must make a careful effort to document new glans lesions in the pediatric population and decrease anxiety in the parents of affected children.


Assuntos
Malformações Arteriovenosas/diagnóstico , Pênis/anormalidades , Adolescente , Malformações Arteriovenosas/cirurgia , Diagnóstico Diferencial , Humanos , Lactente , Masculino , Pênis/irrigação sanguínea , Pênis/cirurgia
9.
Singapore Med J ; 56(3): e53-5, 2015 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-25820862

RESUMO

Testicular tumours have many different manifestations, including hydrocele formation. Herein, we present an extremely rare case of testicular mesothelioma presenting with left hydrocele, but without risk factors. Left radical inguinal orchidectomy was performed, and pathological examination revealed a malignant mesothelioma of the tunica vaginalis of the testis. No infiltration of the spermatic cord was evident, and upon advanced radiological evaluation, no sign of metastasis was detected. Follow-up was still ongoing in our urology outpatient clinic at the time of this report. Although hydrocele is a simple and common condition that is easy to diagnose, a detailed investigation should be performed. Thus, when encountering a patient with hydrocele, the clinician should evaluate the possibility of the presence of an underlying testicular/paratesticular tumour, including a rare one such as mesothelioma of the tunica vaginalis.


Assuntos
Neoplasias Pulmonares/diagnóstico , Mesotelioma/diagnóstico , Hidrocele Testicular/diagnóstico , Neoplasias Testiculares/diagnóstico , Humanos , Masculino , Mesotelioma Maligno , Pessoa de Meia-Idade , Metástase Neoplásica , Orquiectomia , Fatores de Risco , Escroto/diagnóstico por imagem , Cordão Espermático/patologia , Testículo/patologia , Ultrassonografia
10.
Nucl Med Commun ; 16(11): 927-35, 1995 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-8587759

RESUMO

The aim of this investigation was to test for the scintigraphic detection of metastases of malignant melanoma with a new radiopharmaceutical, 99Tcm-glutathione (99Tcm-GSH), in comparison with 99Tcm-anti-melanoma antibody (99Tcm-AMAb). Glutathione was labelled with 99Tcm by a Sn2+ reduction method with an efficiency of > 99% as determined by instant thin layer chromatography (ITLC). Anti-melanoma antibody was obtained as a kit from SORIN (Italy) and labelled with 99TcmO-4. Forty-three patients with a total of 55 biopsy-proven metastatic melanoma foci, 1 ocular melanoma and 20 benign pathologic foci, also confirmed by ultrasound, computed tomography and magnetic resonance imaging, were included in the study after giving their informed consent. Following the intravenous (i.v.) injection of 500 MBq 99Tcm-AMAb, scintigraphic images of the involved areas were obtained 6 h post-injection. Three days later, the same patients were given 500 MBq 99Tcm-GSH i.v. and images were obtained 6 and 24 h post-injection. The images were classified as positive (focal abnormal accumulation) or negative. Quantitative evaluation was also applied. Regions of interest were drawn over the involved areas and nearby soft tissues and the target-to-nontarget (T/NT) ratios obtained with 99Tcm-AMAb (T/NT: 1.92 +/- 0.2) and 99Tcm-GSH (T/NT: 1.84 +/- 0.2) were compared (0.1 < P < or = 0.3). The sensitivity (and specificity) of 99Tcm-AMAb and 99Tcm-GSH in the detection of malignant melanoma metastases were 91% (95%) and 84% (90%), respectively. Compared with 99Tcm-AMAb, the advantages of 99Tcm-GSH are lower levels of blood radioactivity, lower costs and easy in-house preparation. In conclusion, our results show that 99Tcm-GSH is a potentially useful radiopharmaceutical for the detection of metastases of malignant melanoma.


Assuntos
Anticorpos Antineoplásicos , Glutationa/análogos & derivados , Melanoma/diagnóstico por imagem , Melanoma/secundário , Radioimunodetecção/métodos , Pertecnetato Tc 99m de Sódio , Tecnécio , Feminino , Humanos , Marcação por Isótopo , Masculino , Melanoma/imunologia , Pessoa de Meia-Idade , Kit de Reagentes para Diagnóstico , Sensibilidade e Especificidade
11.
J Pediatr Endocrinol Metab ; 11(6): 719-24, 1998.
Artigo em Inglês | MEDLINE | ID: mdl-9829226

RESUMO

Protein-energy malnutrition (PEM) is a problem which concerns about half the world's children. We investigated the effects of malnutrition on thyroid gland weight and thyroid hormone levels. 22 children suffering from malnutrition (14 children suffering from marasmus and 8 children suffering from kwashiorkor) and 7 healthy controls were studied. Malnutrition was confirmed clinically and according to the Wellcome classification definition of malnutrition. Serum thyroid hormone concentrations were measured by radioimmunoassay and the weights of the thyroid gland were evaluated scintigraphically. In the groups with marasmus and kwashiorkor the mean TT4, TT3 and FT3 levels were significantly lower, and TSH levels were significantly higher, compared to controls. FT4 was not influenced by PEM. The mean thyroid gland weights of the groups with marasmus and kwashiorkor were higher than that of the control group. We found no significant differences in all these parameters between groups with marasmus and kwashiorkor. In each of the three groups, the most marked positive correlation was between thyroid gland weight and ratio of thyroid gland weight to body surface area.


Assuntos
Desnutrição Proteico-Calórica/sangue , Desnutrição Proteico-Calórica/patologia , Glândula Tireoide/patologia , Tiroxina/sangue , Tri-Iodotironina/sangue , Superfície Corporal , Feminino , Humanos , Lactente , Kwashiorkor/sangue , Kwashiorkor/patologia , Masculino , Tamanho do Órgão , Concentração Osmolar
12.
J Burn Care Rehabil ; 22(6): 384-9, 2001.
Artigo em Inglês | MEDLINE | ID: mdl-11761388

RESUMO

Epidermoid carcinoma in nonhealing scar tissue, known as Marjolin's ulcer, is not uncommon and is thought to behave in a more aggressive fashion than those from other causes. Between 1982 and 1997, 56 patients with Marjolin's ulcer were treated at our center, Ege University Medical School, Izmir, Turkey. All lesions were secondary to various kinds of burns. Forty of these patients could be followed up 5 years or more. These 40 patients' medical records were reviewed retrospectively.


Assuntos
Queimaduras/complicações , Carcinoma de Células Escamosas/etiologia , Cicatriz/complicações , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Queimaduras/patologia , Queimaduras/terapia , Carcinoma de Células Escamosas/patologia , Carcinoma de Células Escamosas/terapia , Criança , Cicatriz/patologia , Cicatriz/terapia , Feminino , Seguimentos , Humanos , Masculino , Pessoa de Meia-Idade , Estudos Retrospectivos , Taxa de Sobrevida , Fatores de Tempo , Resultado do Tratamento , Cicatrização
13.
Clin Nucl Med ; 22(12): 832-4, 1997 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-9408644

RESUMO

The potential of Tc-99m tetrofosmin for the imaging of breast carcinoma and axillary lymph node metastases was investigated and compared with that of Tc-99m MIBI. Thirty female patients with palpable breast masses underwent Tc-99m MIBI scintigraphy; 17 of those underwent Tc-99m tetrofosmin scintigraphy. The axillary and breast regions were evaluated in all patients. All patients underwent biopsy within 2 weeks of the study. Twenty patients were found to have a primary malignancy of the breast, whereas 10 had benign disease. The patients with breast carcinoma had surgery. Twelve patients had axillary lymph node metastases. Tc-99m MIBI breast imaging showed abnormal uptake in 18 of 20 malignancies and in 8 of 12 axillary lymph node metastases. Tc-99m tetrofosmin breast imaging showed abnormal uptake in 13 of 14 malignancies and in 6 of 10 axillary lymph node metastases. Sensitivity, specificity, and accuracy values obtained with Tc-99m MIBI and Tc-99m tetrofosmin scintigraphy for breast carcinoma were 90%, 90%, 90%, and 93%, 100%, 94%, respectively. The values obtained with Tc-99m MIBI and Tc-99m tetrofosmin scintigraphy for axillary lymph node metastases were 66%, 100%, 86%, and 60%, 100%, 76%, respectively. The authors conclude that both of these techniques are effective in the differentiation of malignant breast masses from benign ones and in detecting axillary lymph node metastases. However, Tc-99m tetrofosmin is superior to Tc-99m MIBI in detecting breast carcinoma.


Assuntos
Neoplasias da Mama/diagnóstico por imagem , Linfonodos/diagnóstico por imagem , Compostos Organofosforados , Compostos de Organotecnécio , Compostos Radiofarmacêuticos , Tecnécio Tc 99m Sestamibi , Adulto , Idoso , Axila , Neoplasias da Mama/patologia , Feminino , Humanos , Metástase Linfática , Pessoa de Meia-Idade , Valor Preditivo dos Testes , Cintilografia , Sensibilidade e Especificidade
15.
Ir J Med Sci ; 184(3): 719-21, 2015 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-26048644
16.
Minerva Pediatr ; 62(4): 419-22, 2010 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-20940675

RESUMO

Resistance to thyroid hormone (RTH) is an inherited syndrome characterized by reduced tissue responsiveness to thyroid hormones. The main defects are due to mutations in thyroid hormone receptor beta (TRbeta). A male, term neonate was admitted because of indirect hyperbilirubinemia and polycythemia. Physical examination revealed ophtalmopathy. High serum T4 with unsupressed thyroid stimulating hormone (TSH) levels suggested RTH. In this presented case, A317T mutation was detected on exon 9 of the TRb-1 gene and precise diagnosis had been confirmed with genetic testing. In neonates and infants exhibiting hypo or hyperthyroidism features with increased circulating levels of thyroid hormones with a normal or increased serum TSH concentration should raise the suspicion of RTH.


Assuntos
Mutação , Receptores beta dos Hormônios Tireóideos/genética , Síndrome da Resistência aos Hormônios Tireóideos/genética , Éxons/genética , Oftalmopatias/genética , Humanos , Hiperbilirrubinemia/genética , Recém-Nascido , Masculino , Linhagem , Policitemia/genética , Síndrome da Resistência aos Hormônios Tireóideos/diagnóstico
17.
Ann Plast Surg ; 45(6): 654-7, 2000 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-11128768

RESUMO

A case of facial cleft that fits the anatomic description of the rare bilateral Tessier no. 5 cleft accompanied by unilateral no. 1 and no. 6 clefts is presented, and brings the total number of reported cases to 21. This case and a review of the literature help to define the soft-tissue and bony course of these clefts, and also emphasize the role of three-dimensional computed tomography to show the bony cleft route. The diagnosis and treatment plan of the no. 5 cleft as well as other rare clefts such as no. 1 and no. 6 clefts are discussed.


Assuntos
Anormalidades Craniofaciais/cirurgia , Anoftalmia/cirurgia , Fissura Palatina/cirurgia , Pálpebras/cirurgia , Feminino , Humanos , Recém-Nascido , Maxila/anormalidades , Maxila/diagnóstico por imagem , Osso Nasal/anormalidades , Órbita/cirurgia , Radiografia , Procedimentos de Cirurgia Plástica
18.
Ann Plast Surg ; 30(1): 60-6, 1993 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-8333688

RESUMO

Venous flaps may become more versatile in reconstruction and offer different opportunities to reconstructive surgeons if the mechanisms of their viability is clarified. In this study, axial pattern flank flaps in rabbits were converted into venous flaps by dividing the cutaneous pedicles and ligating the artery. Fluorescein and radioactive tracer studies were performed to elucidate the mechanisms of possible circulation. It is hypothesized that the venous flaps do not have a capillary circulation, but veins transport the fluid out, which is drawn into the capillaries from the interstitium, and that the nutrients and oxygen for flap viability diffuse from the wound bed. Venous drainage plays an important role by draining the metabolites away until revascularization offers a more direct supply.


Assuntos
Sobrevivência de Enxerto/fisiologia , Retalhos Cirúrgicos/fisiologia , Animais , Permeabilidade Capilar/fisiologia , Fluoresceína , Fluoresceínas , Coelhos , Fluxo Sanguíneo Regional/fisiologia , Tecnécio , Sobrevivência de Tecidos/fisiologia , Veias/fisiologia
19.
J Dairy Sci ; 77(8): 2302-7, 1994 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-7962852

RESUMO

Butylated hydroxytoluene is an antioxidant that has antiviral properties and sustains sperm viability during freezing and thawing. A field trial involving 11 bulls and 19,000 AI was conducted to determine whether addition of .5 mM butylated hydroxytoluene to whole milk extender during seminal processing affected bull fertility as estimated by nonreturn rates generated by cows bred to the bulls. Effects of bull, batch of semen nested within bull, treatment, and month of AI were studied. Nonreturn rates were recorded for each month for every bull, batch of semen (ejaculates pooled on a given day), and treatment combination. Because some bulls had < 6 batches of semen, the original experimental design was reduced to two smaller designs. Categorical data analysis with maximum likelihood estimation was used for analysis of nonreturn rates. The results from three models were used to interpret the data. The nonreturn rates were approximately 73.9% for the butylated hydroxytoluene treatment and 74.1% for the control. In all models, bull effect was significant, but batch, month of AI, and treatment had no effect on bull fertility. Addition of .5 mM butylated hydroxytoluene to whole milk extender during semen processing did not affect bull nonreturn rates.


Assuntos
Hidroxitolueno Butilado/farmacologia , Bovinos/fisiologia , Fertilidade/efeitos dos fármacos , Congelamento , Sêmen/fisiologia , Animais , Inseminação Artificial/estatística & dados numéricos , Inseminação Artificial/veterinária , Masculino , Sêmen/efeitos dos fármacos
20.
J Craniofac Surg ; 8(4): 270-3, 1997 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-9482050

RESUMO

The effects of rigid and nonrigid fixation methods in the treatment of long bones have been studied by many authors. A comparison of these two methods has been undertaken on long bones and documented in previous studies. However, there appears to be no such research on facial bone fractures. In this study a mandibular model was selected as an appropriate model for fracture site mobility in the face. Twenty-three patients with mandibular fractures were admitted to the study. Two groups were formed. The first group consisted of intermaxillary fixation patients and the second group was comprised of internal rigid fixation-treated patients. The callus deposit was evaluated by the technetium 99m methylene diphosphonate scintigraphic method on days 1, 10, 20, 30, and 40 postoperatively. The results of the study showed that the greatest level of callus formation is in the second exposure (days 1 to 10) for the first group and in the third exposure (days 10 to 20) for the second group. This study demonstrates that minimal motion on the fracture line after intermaxillary fixation increases local blood circulation and osteoblastic activity. The callus deposit reaches maximum in a short period of time with nonrigid fixation.


Assuntos
Fixação Interna de Fraturas/métodos , Técnicas de Fixação da Arcada Osseodentária , Mandíbula/diagnóstico por imagem , Mandíbula/cirurgia , Fraturas Mandibulares/diagnóstico por imagem , Fraturas Mandibulares/cirurgia , Adulto , Calo Ósseo/diagnóstico por imagem , Feminino , Humanos , Masculino , Cintilografia , Compostos Radiofarmacêuticos , Medronato de Tecnécio Tc 99m , Fatores de Tempo
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