Effect of odontoplasty on apparent digestibility and consumption time of diet for equines / Efeito da odontoplastia sobre a digestibilidade aparente e o tempo de consumo de dieta para equinos

The aim of this study was to investigate the effect of odontoplasty on apparent digestibility of diet for horses, consumption time, and particle size of feces. Nine horses were used, aged 14.5±3.3 years and weightng 531±38.7kg. The diet consisted of 1.5% of live weight (LW) in Tifton 85 hay and 0.75% of LW in concentrate for both assays. The experiment consisted of two tests of apparent digestibility using the method of total collection, before and after the odontoplasty, where the consumption time of hay and concentrate was also evaluated and the particle size of the feces was analyzed. An effect (P<0.05) of odontoplasty on the apparent digestibility coefficients of dry matter, organic matter, crude protein, neutral detergent fiber and acid detergent fiber was observed. Effect of the consumption time for the concentrate (P<0.05) was observed, but not for the forage (P<0.05). There was more retention (P<0.05) of the fecal particles in the sieves of bigger granulometry. The odontoplasty increases the digestibility of dietary nutrients and feces particle size, without changing feces quality. Animals after the procedure have shorter concentrate consumption time.(AU)

O objetivo deste estudo foi investigar o efeito da odontoplastia sobre a digestibilidade aparente de dieta para equinos, o tempo de consumo e o tamanho de partícula das fezes. Foram utilizados nove equinos, com idade de 14,5±3,3 anos e peso de 531±38,7kg. A dieta consistiu do oferecimento de 1,5% do peso vivo (PV) em feno de Tifton 85 e 0,75% do PV em concentrado para ambos os ensaios. O experimento compôs-se de dois ensaios de digestibilidade aparente pelo método de coleta total, antes e após a odontoplastia, em que também foi avaliado o tempo de consumo do feno e do concentrado e analisado o tamanho de partícula das fezes. Foi observado efeito (P<0,05) da odontoplastia sobre os coeficientes de digestibilidade aparente da matéria seca, matéria orgânica, proteína bruta, fibra em detergente neutro e fibra em detergente ácido. Verificou-se efeito do tempo de consumo para o concentrado (P<0,05), porém não se observou para o volumoso (P<0,05). Houve maior retenção (P<0,05) das partículas das fezes nas peneiras de maior granulometria. A odontoplastia aumenta a digestibilidade dos nutrientes da dieta e o tamanho de partículas nas fezes, sem alterar a qualidade destas. Animais após o procedimento apresentam menor tempo de consumo de concentrado.(AU)

'I don't want to burden my family': handling communication challenges in geriatric oncology.

Oncologists need excellent communication skills to effectively handle challenging conversations regarding prognosis, transition to palliative care, code status, and other sensitive topics. Foundational skills include: 1) posing open-ended, exploratory questions, 2) allowing for appropriate silence in the conversation, 3) listening actively, 4) recognizing emotions, 5) responding to emotions with empathy rather than biomedical information, and 6) speaking with clarity by avoiding technical jargon and offering small chunks of information. Conversations about sensitive topics can be particularly challenging with geriatric patients, who experience functional and sensory limitations. The risk-benefit ratio of diagnostic and therapeutic interventions tips precariously in older patients as many develop geriatric syndromes. Older cancer patients have the unique perspective of looking back on a long life and looking forward to impending death. Higher order skills can be very powerful in helping geriatric cancer patients find meaning and dignity at the end of life. These skills include exploring spirituality and coping strategies and engaging the patient in conversation and reflection about their legacy.

Schistosomiasis haematobia in Brazilian patients: clinical and renal functional evaluation with 99mTc-DTPA

The present study was carried out at the Army Central Hospital, Rio de Janeiro, Brazil, from September 2000 to December 2001, employing diethylenetriamine penta-acetic acid labeled with technetium-99m (99mTc-DTPA) to evaluate the renal function of nineteen symptomatic patients infected with S. haematobium during a peace mission in Mozambique. Results evidenced that the most frequent clinical manifestations were hematuria (68.4 percent) and low back pain (68.4 percent) and 73.7 percent patients had altered dynamic renal scintigraphy expressed by an increase in the excretory phase independently of the symptoms duration; furthermore, none of them had mechanical obstructive pattern. Schistosoma haematobium glomerulopathy could be considered a pathological finding without correlation with the disease clinical manifestations.(AU)

Influence of the freezing technique (nitrogen liquid vs ultrafreezer of -152 degrees C) and male-to-male variation over the semen quality in Canarian Mastiff breed dogs.

This study was carried out to assess the in vitro quality of canine semen frozen in an ultrafreezer at -152 degrees C and to evaluate the male-to-male variation of frozen semen in five male dogs of the Canarian Mastiff breed. Four ejaculates of each dog were processed individually (5% glycerol and 0.5% Equex) to reach a final concentration of 100 x 10(6) spermatozoa/ml. Then, two freezing techniques were tested to assess the seminal quality (sperm motility, live spermatozoa and abnormal sperm cell percentages) at 1, 30, 60, 120 and 360 days after freezing: (i) semen was frozen and stored in liquid nitrogen; (ii) semen was frozen and stored in the ultrafreezer at -152 degrees C. After freezing-thawing, both freezing protocols showed no significant differences in sperm motility and the percentages of live and abnormal spermatozoa. On the other hand, the microscopic characteristics of spermatozoa in fresh semen were practically similar among males; however, after the semen processing and freezing, significant differences were observed (p < 0.05) among males, especially as regards sperm motility. This inter-individual variability was detected in both freezing protocols, showing that the male-to-male variation in the seminal quality post-freezing was independent of the freezing technique used. The in vitro results obtained in the Canarian Mastiff breed confirmed that the use of ultra-freezers at -152 degrees C is a potential alternative to liquid nitrogen for storing canine semen for long periods of time.

Radionuclide evaluation of hepatic hydrothorax

La cirrosis es una común enfermedad del higado con una gran morbosidad y mortalidad. Tiene varias causas siendo la mas frecuente el alcoholismo y las hepatitis viral C. El hydrothorax Hepático es una manifestación de hipertensión portal entre los pacientes con cirrosis de higado mas avanzadas, cuyo manejo es extremadamente desafiante, aunque frecuentemente ingrato, con resultado malo en la mayoría de los casos. Por consiguiente, un diagnóstico exitoso y eficaz, y un enfoque terapeutico es de vital importancia. El diagnóstico de hydrothorax hepático puede establecerse a través de la administración del intraperitoneal de un radiotracer, que es un simple, fisiológico, y menos invasivo metodo para evaluar a los pacientes con hydrothorax hepático. La migración en la cavidad del pleural confirma la presencia de una comunicación entre el peritoneal y espacios del pleural. Quince pacientes (8 mujeres y 7 hombres) de 32 a 69 años fueron examinadas y trece fueron positivos, mostrando comunicación entre las cavidades predominantemente del lado derecho; dos fueron negativos. Conclusión: Nuestros resultados están de acuerdo con varios autores. Mientras el Scintigrafia es un método simple y fisiológico, menos invasivo con buena sensibilidad y especificidad y da baja radiación al paciente, parece que podría ser recomendado como un chequeo en sospecha clínica de efusión del pleural de origen hepático.

Esophageal reconstruction surgery in oncologic patients: determination of gastric emptying time.

All parts of the gastrointestinal tract are accessible for study using nuclear medicine techniques. We have studied the effect of esophageal reconstruction surgery, in different periods of time, after surgical procedure. Oncologic patients (19) were evaluated after esophageal reconstruction surgery with gastric (group II - 14 patients) or colonic tube (group III - 5 patients) and they were compared with 15 healthy volunteers (group I). Gastric emptying was performed in the same subjects using solid food (egg sandwich) labeled with 99mTc-phytate. In emptying gastric studies, the mean (T1/2) of the patients was much faster than those of the control (p<0.05) when 1/3 distal tube was considered as stomach. However, there was no difference between the T1/2 of group II and group III. We concluded that this nuclear medicine method could be useful in the monitoring the surgical reconstruction of the esophagus.

Diagnóstico de refluxo gastroesofágico por método cintilográfico / The diagnosis of gastroesophageal reflux by scintigraphy

Vinte e três pacientes com clínica de refluxo gastroesofágico e diagnóstico endoscápico de esofagite foram submetidos à cintilografia dinâmica com 99mTC para pesquisa de refluxo. 12 individuos saudáveis constituíram o grupo de controle. Observou-se refluxo do material radioativo para o esôfago em 19 (82,6) dos pacientes e em 2 (16,6) dos controles. Em 9 controles e em 10 pacientes, quantificou-se o refluxo por meio da obtençäo do índice de refluxo. Concluiu-se que a cintilografia dinâmica mostra boa sensibilidade na comprovaçäo de refluxo em pacientes com esofagite