Biomed, sterilization and diagnostic procedures: STS260 4R-3 Surgical Technician Certification Prep

What is the sterile component of the Electrosurgical Unit (ESU)?

The active electrode

Which type of ESU is used for delicate surgery such as ophthalmology, plastic, and neurosurgery?

bipolar unit

A plume of vaporized tissue may contain residual ____ and is, therefore, important to protect the staff. 

(All of the above)- Carcinogens, blood-borne pathogens, and mutagens

When current passes from the ESU through the active electrode, into what form is electrical energy converted?

Thermal

Electrosurgery can be used to:

incise tissue, coagulate blood vessels, destroy or remove diseased tissue.

The proper placement of the patient return electrode or grounding pad should be: 

on the operative side

Which items can be used as cutting electrodes in electrosurgery?

Needle tip, spatula, and wire loop

What type of energy is used with the harmonic system?(harmonic scalpel, forceps, scissors)

Ultrasonic energy

All of the following are true of lasers EXCEPT: 

electricity does pass through the patient during laser surgery

What personal protective equipment must be worn when entering a room where a laser is in use?

Protective eyewear

Endotracheal tubes and other anesthetic equipment can easily ignite in the presence of laser energy and O2-rich anesthetic agents.

True

Which laser is most commonly used for urological lithotripsy?

Ho:YAG laser

What pressure is required in a gravity steam sterilizer set at 250°F?

15–17 lb

Positive assurance that sterilization conditions have been achieved can only be obtained through:

biological control test

How long is a wrapped tray of instruments sterilized in a gravity displacement sterilizer at 250°F?

30 minutes

What is the minimum exposure time for unwrapped instruments in a flash sterilizer set at 270°F (132°C)?

3 minutes

When steam is used to sterilize a rubber tubing or catheter: 

a residual of distilled water should be left inside the lumen

All of the following statements regarding instrument sets are true EXCEPT: 

 

all instruments must be closed

What is the chemical agent used in gas sterilization for heat- or moisture-sensitive items?

Ethylene oxide

 What chemical system uses peracetic acid as the sterilant? 

STERIS

Chemical monitors are placed inside and outside of all packs to be sterilized. This monitor shows: 

the parameters such as heat and pressure have been reached

Which test is used to check for air trapped in a prevacuum sterilizer?

Bowie–Dick test

How long must instruments remain in an aerator operated at 140°F during ETO sterilization?

8 hours

Which spore is used as a biological indicator to test steam under pressure sterilizers?

Bacillus stearothermophilus

What diagnostic procedure is performed to measure changes in blood vessels and blood flow?

Plethysmography

 Forceps or an instrument that contains two contact points which are used to coagulate tissue are called monopolar. 

False

 Gravity displacement utilizes gas to destroy microorganisms.

False

Wrapped basin sets may be sterilized by steam under pressure at 250°F for a minimum of: 

20 minutes

Why would gas sterilization be chosen over steam sterilization? 

It is less damaging to items

A 30-minute single-use sterilization system useful for endoscopes is: 

STERIS

Contrast media includes all except: 

All of the above

An x-ray of the spine is termed: 

Myelography

When performing a cholangiogram, the contrast media is introduced into the: 

cystic duct

A ventriculography is an x-ray of the: 

ventricles in the brain

A CT scan is a type of x-ray that uses high frequency sound waves to create an image of organs inside of the body.

False

A frozen section is a biopsy that is performed to diagnose a disease by excising tissue and fluids for examination and requires an immediate diagnosis.

True

When performing a spinal tap to retrieve CSF the puncture is performed in which space? 

Lumbar

Thoracentesis: 

is performed to remove fluid from pleural cavity

ECG is: 

used to measure electrical activity of the heart

The principles for radiation exposure are:

please choose all that apply.

Time, Sheilding, Distance,