Answer:
Virulence, the capacity to cause disease, varies markedly among viruses. Some viruses cause lethal disease while others do not. For example, nearly all humans infected with rabies virus develop a disease of the central nervous system which ultimately leads to death. In contrast, most humans are infected with circoviruses with no apparent consequence.
Explanation: One explanation for viral virulence is that it facilitates transmission. However, a comparison of infections caused by two enteric viruses, poliovirus and norovirus, does not support this general view. Both viruses infect the gastrointestinal tract and are spread efficiently among humans by fecal contamination.
As the cell size increases, the ratio of surface area to volume DECREASES.
The surface area to volume ratio refers to the area per unit volume of a cell. As a cell increase in size, the surface area and the volume of the cell also increase but at an unequal rate, a point will be reached where the ratio of the surface area to volume will be so low that the diffusion becomes very inefficient, at this point, the cell has to divide in order to increase its surface area to volume ratio and to increase its diffusion rate.
A carbon footprint deals with the resource usage but focuses strictly on the greenhouse gases released due to burning of fossil fuels. Greenhouse gas calculation make up a portion of an ecological footprint. An ecological footprint compares the total resources people consume with the land and water area that is needed to replace those resources, it measures the demand human populations put on nature. Both calculations illustrate the impact of human activity on the environment.
To ensure that any bacteria in the urine specimen are from the urine and not from the patient's skin, the nurse's hands, or the environment, the nurse will employ sterile technique to collect a urine specimen from an indwelling urinary catheter.
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What are Indwelling urinary catheters? </h3>
A tube is placed in the bladder using aseptic approach during indwelling urinary catheterization.
Patients undergo the procedure for many different reasons, such as: Managing acute and chronic urinary retention; Accurately measuring urine output in critically ill patients; Bypassing an obstruction, such as an enlarged prostate gland in men; Administering medications directly into the bladder; and Conducting bladder function tests.
When all other conservative management techniques have been tried and failed, catheters can also be utilized to control incontinence and preserve skin integrity.
Numerous problems are linked to indwelling urinary catheterization, such as catheter-associated urinary tract infection (CAUTI), tissue injury, bypassing, and obstruction.
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