Free COT JCAHPO Questions and Answers — Questions and Answers
Question 1: Phacoemulsification makes use of which type of waves?
- Ultrasound waves (Correct answer)
- Ultraviolet waves
- Infrared waves
- Radio waves
Correct answer: Ultrasound waves
Ultrasound waves are used in phacoemulsification to break the nucleus into smaller fragments for easy removal via a small corneal incision.
Question 2: Which of the following are steps surgical team members can take to avoid spreading infection to the patient?
- Keeping fingernails short
- Wearing gloves
- Frequent hand washing
- All of the above (Correct answer)
Correct answer: All of the above
Keeping fingernails short, wearing gloves, and frequent hand washing are all steps surgical team members can take in order to avoid spreading infection to the patient. <br>Additionally, shoulder-length or longer hair should be held back and anyone with an infection, such as a cold, should exclude themselves from any surgical procedures until they have recovered.
Question 3: Which one of the following is NOT a technique for nucleus removal in phacoemulsification?
- Cut and paste technique (Correct answer)
- Chip and flip technique
- Divide and conquer technique
- Stop and chop technique
- Direct chop technique
Correct answer: Cut and paste technique
A scrub technician must be familiar with the names of the different techniques used in Phacoemulsification, as the machine settings are different in each and the operating surgeon often needs help from the scrub technician for changing parameters during surgery. <br>Chip and flip, divide and conquer, stop and chop and direct chop are all techniques used for phacoemulsification.
Question 4: Which of the following is NOT a minor procedure in ophthalmology?
- Incision and Curettage of Chalazion
- Corneal foreign body removal
- Lacrimal syringing
- Intraocular foreign body removal (Correct answer)
Correct answer: Intraocular foreign body removal
Intraocular foreign body removal must be attempted under anesthesia (general or local, depending on the age of the patient and patient willingness) and must be performed under an operating microscope in the major operating theatre.<br> A scrub technician must be aware of the list of minor procedures and the list of instruments to be kept ready.
Question 5: Which of these materials cannot be sterilized using autoclave?
- Nylon
- Polyester
- Silicone
- Latex (Correct answer)
Correct answer: Latex
Before putting things in the autoclave machine it must be verified whether they are safe enough to be put inside.<br>Some materials, such as latex, polyethylene, acrylic, and PVC cannot be put inside an autoclave machine because of the risk of melting or damage.
Question 6: Which is the best knife for making a clear corneal tunnel in phacoemulsification?
- Stainless steel knife
- Brass coated knife
- Titanium knife
- Diamond knife (Correct answer)
Correct answer: Diamond knife
Diamond is the strongest material on earth and knives made from diamond are sharp and help in making a precise corneal tunnel. Knives made from other materials are relatively less sharp and can give rise to ragged edges.
Question 7: An ophthalmic technician must be familiar with the three positions of the foot pedal of the phacoemulsification machine based on the sound. <br>The positions denote:
- 1) irrigation, 2) aspiration, 3) phacoemulsification (Correct answer)
- 1) irrigation, 2) aspiration, 3) polishing
- 1) irrigation, 2) aspiration, 3) diathermy
- 1) irrigation, 2) aspiration, 3) surge
Correct answer: 1) irrigation, 2) aspiration, 3) phacoemulsification
The scrub technician must keep a vigilant stance by having a keen observation and by listening to the sounds made by ophthalmic equipment. Any deviation from routine must be noted and the surgeon must be alerted immediately.
Question 8: Which is the most ideal irrigating fluid for cataract surgery by phacoemulsification?
- Normal saline
- Ringer lactate
- Dextrose normal saline
- Balanced salt solution (Correct answer)
Correct answer: Balanced salt solution
BSS is an isotonic solution used for irrigating the eye during various intraocular surgeries. <br>Its composition, physiological pH and osmolarity are very similar to that of the aqueous.
Question 9: Proper sterilization of all surgical instruments is part of what strategy?
- Scrubbing
- Septic technique
- Aseptic technique (Correct answer)
- Universal precautions
Correct answer: Aseptic technique
Proper sterilization of all surgical instruments is part of the aseptic technique. Typically, it is the duty of the ophthalmic assistant to make sure that this is carried out.
Question 10: An instrument that can sterilize surgical implements through the use of pressurized steam is known as a(n)
- autoclave. (Correct answer)
- keratome.
- tonometer.
- curet.
Correct answer: autoclave.
An autoclave can sterilize surgical implements through the use of pressurized steam. All instruments must be clean and free of organic debris (eg, blood, tissue, etc.) before being placed in the autoclave. <br>Hinged instruments, such as forceps or scissors, should be open when placed in the autoclave and spaced so the steam can contact as much of each instrument’s surface as possible.
Question 11: Anyone whose skin is penetrated by a used surgical instrument must report the incident within
- 2 days.
- 1 week.
- immediately. (Correct answer)
- 3 days.
Correct answer: immediately.
Anyone whose skin is penetrated by a used surgical instrument must report the incident immediately.<br> Every effort must be made to avoid the possibility of transmitting any microbes, especially those causing AIDS and hepatitis.
Free COT JCAHPO Questions and Answers
Phacoemulsification makes use of which type of waves?