What type of ignition occurs when a mixture of fuel and oxygen encounters an external heat source with sufficient heat energy to start the combustion reaction?

Prior to surgical procedures, hand hygiene must be performed with

antimicrobial soap and water with aggressive rubbing. an alcohol-based hand rub. plain soap and hot water. none of the above.

Select the appropriate diagnostic code using an ICD-9-CM code book for the diagnostic statements given in the following questions

Rectal polyp