Which of the following on an ECG reflects ventricular heart depolarization?
a. T wave
b. U wave
c. P-R interval
d. QRS wave
d. QRS wave
What is the universal standard speed for recording an ECG?
a. 20 mm/second
b. 25 mm/second
c. 30 mm/second
d. 35 mm/second
b. 25 mm/second
What is the purpose of performing a specific gravity on a urine sample?
a. it determines whether the patient's diet is high in fat
b. it measures the density when compared to distilled water
c. screens for glucomerulonephritis
d. it detects the presence of nitrate in the urine
b. it measures the density when compared to distilled water
All of the following demonstrate quality control. what is the exception?
a. proper documentation
b. testing with control samples
c. calibrating equipment
d. treating every customer properly
d. treating every customer properly
what is the pacemaker of the heart?
a. (SA) sinoatrial node
b. (LB) left bundle branch
c. (BH) bundle of His
d. (AV) atrioventricular node
a. (SA) sinoatrial node
,Which of the following commonly used disinfectants is used in the medical field and found to be
effective against bloodborne pathogens?
a. radiation
b. bleach
c. dry heat
d. ethylene oxide
b. bleach
Which of the following is the most appropriate method for disposing of contaminated needles?
a. insert in the biohazard container located in the office lab
b. place in a biohazard container without recapping
c. place it in a biohazard sharps container located in the room where used
d. disengage the needle from the syringe, and then dispose of it in the biohazard sharps
container
c. place it in a biohazard sharps container located in the room where used
what is the most important step in achieving medical asepsis?
a. washing hands
b. using surgical soap to scrub hands
c. cleaning patient examination rooms with disinfectant
d. placing soiled linens in an appropriate bag as soon as possible
a. washing hands
Which of the following solutions will help prevent the transmission of hepatitis?
a. Fluconazole
b. household bleach
c. hydrogen peroxide
d. isopropyl alcohol
b. household bleach
How often should quality control tests be done for procedures performed in the office?
a. yearly
b. every 6 months
c. monthly
d. daily
d. daily
which organization developed the guidelines for universal precautions?
, a. EPA
b. FDA
c. CDC
d. OSHA
c. CDC
According to OSHA, medical personnel must wear PPE (personal protective equipment) when
they have contact with which of the following?
a. sweat
b. skin
c. tears
d. blood
d. blood
To detect pregnancy, either urine or blood serum is tested for the presence of which of the
following?
a. febrile agglutinations
b. potassium oxalate
c. HCG hormone
d. oxytocin
c. HCG hormone
a bacteriological culture needs to be performed on a collected urine specimen. which of the
following instructions best describes what your patient should do?
a. collect a midday specimen in a sterile cup
b. void a specimen midstream in a sterile cup
c. collect a 24-hour specimen
d. void the entire specimen in a sterile cup
b. void a specimen midstream in a sterile cup
A urine specimen was collected and then left standing for more than 1 hour. bacteria grew, and
the pH of the urine became which of the following?
a. highly acidic
b. slightly acidic
c. alkaline
d. neutral
c. alkaline
what is the pH range for normal urine?