Use of portable vitrectomy instrumentation (VISC X) in the rural Guatemalan highlands.

Sclerotomy for pars plana vitrectomy.

Closed vitrectomy has largely supplanted the 'open sky' method, particularly because it results in minimal interference with the integrity of the globe. Ideally the pars plana sclerotomy should be sufficiently watertight to allow the intraocular pressure to be maintained during surgery without impeding free movement of the vitrectomy instrument within the eye. We describe a sclerotomy technique...

Frommilpasto the Market: a Study on the Use of Metal Silos for Safer and Better Storage of Guatemalan Maize

........................................................................................................................2 INTRODUCTION...............................................................................................................3 THE NATIONAL MAIZE ECONOMY.............................................................................4 GUATEMALA’S AGRICULTURE AND MAIN MAIZE PRODUC...

36 K ' iche ' an Origins , Symbolic Emulation , and Ethnogenesis in the Maya Highlands

No topic in K'iche'an archaeology and ethnohistory has been the subject of more speculation than the source and timing of central Mexican influence in the central and western highlands of Guatemala. Evidence for an important connection between the two regions is undeniable, and is manifest in indigenous historical accounts such as the Papal Wuj (Brasseur de Bourbourg 1861; Saravia E. and Guarch...

Effects of Ketamine, Fentanyl and Paracetamol on Pain Intensity and Hemodynamic Parameters after Deep Vitrectomy

Background & objectives: The aim of this study was to evaluate the effects of preventive administration of ketamine, fentanyl and paracetamol on pain intensity and hemodynamic parameters after deep vitrectomy. Methods: In this clinical trial, 80 candidates of deep vitrectomy surgery were randomly assigned into 4 groups (1-4) and received 0.5 mg / kg ketamine, 2 μg / kg fentanyl, 10 mg/kg of par...

Between the Market and the Milpa: Market Engagements, Peasant Livelihood Strategies, and the On-farm Conservation of Crop Genetic Diversity in the Guatemalan Highlands