Results: 3722

Construction of a Low-cost Homemade Laparoscopic Simulator for Use in a Caribbean Setting

West Indian med. j; 68 (1), 2019
ABSTRACT Background: To the modern surgeon in training, the acquisition of laparoscopic skills is essential. Laparoscopic simulators are effective, but in the often-resource-poor setting of the Caribbean, the cost of these simulators is often prohibitive. We describe the construction of a simulator whic...

Extrusión Apical de Barro Dentinario e Irrigante Producidos por Dos Sistemas de Instrumentación de Níquel Titanio al Utilizar Irrigación Pasiva o Activa

RESUMEN: El barro dentinario producido durante tratamiento endodóntico puede ser extruido hacia el tejido periradicular junto con el irrigante, produciendo inflamación y dolor postoperatorio. Comparar la cantidad de extrusión apical de barro dentinario e irrigante, producido durante la preparación qu...

Microbialite-like structures in Cladophora sp. (Ulvophyceae) mats from a subtropical Andean basin: ecological implications

Rev. biol. trop; 67 (1), 2019
Abstract The solubility equilibrium of calcite is influenced by physicochemical, climatic and biological factors. Annual cycles of exceptionally prolonged drought, in conjunction with naturally occurring diffuse organic pollution, generate the unique conditions for the precipitation of lithified carbonat...

Onthophagus landolti and Canthon indigaceus chevrolati (Coleoptera: Scarabaeinae) are attracted to the feces of ivermectin-treated cattle in the Mexican tropics

Rev. biol. trop; 67 (1), 2019
Abstract Ivermectin (IVM) is widely used for parasite control in livestock in the tropics. Residual IVM in feces conserves its insecticide activity for weeks and can harm dung beetle (DB) species. Attraction to the feces of IVM-treated cattle was tested using the DB species Onthophagus landolti (Harold) ...

Essential oil composition in natural population of Lippia origanoides (Verbenaceae) during dry and rainy seasons

Rev. biol. trop; 67 (1), 2019
Abstract Lippia origanoides Kunth. is a medicinal shrub native to some countries in South America, Central America and the Caribbean. This study aims to investigate the chemical composition of the essential oil and the genetic diversity of a natural population of Lippia origanoides in two seasons. Leaf s...

Catharanthus roseus (Apocynaceae) naturally infected with diverse phytoplasmas in Costa Rica

Rev. biol. trop; 67 (1), 2019
Abstract Phytoplasmas (class Mollicutes) are causal agents of plant diseases with an economic impact on crops or threatening local biodiversity. A survey was conducted from 2012 to 2016 on infected Catharanthus roseus plants that exhibited symptoms reminiscent of phytoplasma infection throughout Costa Ri...

Experiencias adquiridas por los residentes de Ginecología y Obstetricia en la instrumentación obstétrica del parto
Experiences acquired by Gynaecology and Obstetrics residents regarding delivery obstetrics instrumentation

Educ. med. super; 33 (1), 2019
Introducción: Los obstetras siempre han tratado de sujetar la cabeza del feto de la manera más segura posible para acelerar el parto y reducir el difícil trabajo de la mujer. La historia del uso de instrumentos obstétricos para facilitar el parto (ya sean fórceps o espátulas) es una parte pintoresc...

Antibacterial activity of the skin secretion of Phyllomedusa azurea (Anura: Hylidae) from the Central Brazil Cerrado

Rev. biol. trop; 67 (1), 2019
Abstract Phyllomedusa azurea is a frog species well distributed geographically in South America, including Brazilian biomes as Pantanal and Cerrado. Compared with other anurans from the Phyllomedusinae family, there are few reports on the bioactive potential of skin-derived molecules from this species. I...

Tratamento das estenoses esofágicas benignas simples com dilatadores de Savary-Gilliard: ainda é necessária a regra de três?

Arq. gastroenterol; 56 (1), 2019
ABSTRACT BACKGROUND: Bougies dilation is considered an effective technique for the treatment of simple benign esophageal strictures. The "rule of three" has been advocated to prevent reported adverse events such as bleeding and perforation. However, adherence to this rule has increased the cost and dur...

A experiência do médico examinador tem influência na avaliação do tônus anal em comparação à manometria anorretal?

Arq. gastroenterol; 56 (1), 2019
ABSTRACT BACKGROUND: Digital rectal examination (DRE) is part of the physical examination, is also essential for the colorectal surgeon evaluation. A good DRE offers precious information related to the patient's complaints, which will help in decision making. It is simple, quick and minimally invasive....