Recommended temperature of Autoclave is
**Core Concept**
The autoclave is a medical instrument used for sterilization, requiring a precise temperature and pressure to kill microorganisms. The recommended temperature is critical for effective sterilization, as it must be high enough to denature proteins and disrupt cell membranes, yet not so high that it causes damage to equipment or materials.
**Why the Correct Answer is Right**
The correct answer is 121°C (250°F) at 15 psi (pounds per square inch). This temperature and pressure combination is sufficient to achieve sterilization by denaturing proteins, disrupting cell membranes, and inactivating nucleic acids. The autoclave uses steam as the sterilizing agent, which is heated to this temperature to ensure that all biological agents, including bacteria, viruses, and spores, are eliminated. This process is also known as moist heat sterilization.
**Why Each Wrong Option is Incorrect**
* **Option A:** This option is incorrect because temperatures below 121°C are not sufficient to achieve sterilization, and may even allow for the growth of microorganisms.
* **Option B:** This option is incorrect because pressures above 15 psi may cause damage to equipment or materials, and are not necessary for effective sterilization.
* **Option C:** This option is incorrect because temperatures above 121°C may cause damage to certain materials or equipment, and are not necessary for effective sterilization.
**Clinical Pearl / High-Yield Fact**
It's essential to follow the manufacturer's instructions for the autoclave, as well as to validate its effectiveness regularly, to ensure that it is functioning correctly and achieving sterilization.
**Correct Answer: D. 121°C at 15 psi.**