Pantallas faciales para el control de infecciones: una revisión.

ResumenLas pantallas faciales son dispositivos que integran el equipo de protección personal utilizados por muchos trabajadores (por ejemplo, médicos, dentistas, veterinarios) para proteger la zona facial y las membranas mucosas asociadas (ojos, nariz, boca) de salpicaduras, rociadas y aspersiones de fluidos corporales. Generalmente, las pantallas faciales no se utilizan solas, sino junto con otro equipo de protección, por lo que se clasifican como equipo de protección personal complementario. Aunque hay millones de potenciales usuarios de pantallas faciales, las directrices para su uso varían en los distintos organismos gubernamentales y sociedades profesionales y existen pocas investigaciones que indaguen sobre su eficacia.

Cloth Face Coverings for Use as Facemasks During the Coronavirus (SARS-CoV-2) Pandemic: What Science and Experience Have Taught Us.

The current coronavirus (severe acute respiratory syndrome coronavirus 2 [SARS-CoV-2]) pandemic has resulted in severe shortages of personal protective equipment, including respiratory protective equipment, such as N95 respirators. This has led some government agencies to suggest the use of cloth face coverings (CFCs) by health-care providers and the general public as a last resort when standard respiratory protective equipment is unavailable. Although such coverings have been in use for over a century and have found widespread use during some previous pandemics, research data are relatively scant for the protective value of this measure.

Intersegmental differences in facial warmth sensitivity during rest, passive heat and exercise.

Increased facial warmth sensations could lead to thermal discomfort, and different facial regions may demonstrate concurrent temperature differences. The study aim was examining facial warmth sensitivity differences by facial region under differing environmental conditions. Twelve men had heat flux measurements of six facial regions during 30 min each of rest in thermoneutral conditions (25 °C, 30% relative humidity (RH)), rest in warm conditions (40 °C, 30% RH), and cycling at 400 W of metabolic heat production (40 °C, 30% RH).

Heat stress assessment during intermittent work under different environmental conditions and clothing combinations of effective wet bulb globe temperature (WBGT).

This study examined whether different combinations of ambient temperature and relative humidity for the effective wet bulb globe temperature, in conjunction with two different levels of clothing adjustment factors, elicit a similar level of heat strain consistent with the current threshold limit value guidelines. Twelve healthy, physically active men performed four 15-min sessions of cycling at a fixed rate of metabolic heat production of 350 watts. Each trial was separated by a 15-min recovery period under four conditions: (1) Cotton coveralls + dry condition (WD 45.

Using trunk posture to monitor heat strain at work.

This study aimed to determine if trunk posture during walking is related to increases in rectal temperature (T). 24 males treadmill walked in one of four conditions (1): 30 min at 3.0 mph and 0% grade, 20 °C and 50% relative humidity (RH), wearing healthcare worker (HCW) PPE; (2): 30 min at 3.