Occupational health and Safety final exam part 1 2025
update|comprehensive questions and verified answers
(complete solutions) GRADE A+
All of the following statements are correct in relation to hepatitis B vaccination
EXCEPT: - ans -Post-vaccination confirmation of seroconversion is mandated 1-2
months after the third dose
All of the following statement with respect to Hepatitis B vaccination are true
EXCEPT: - ans -The US Public Health Service recommends routine booster doses of
the Hep B vaccine
Antiseptic handwashing - ans -The technique of wetting the hands under warm
running water, applying an antimicrobial soap (e.g., chlorhexidine, iodine, and
iodophors, chloroxylenol, or triclosan), rubbing the hands together vigorously for
15 seconds to work up a lather, using the fingernails to clean the fingernails on
the opposing hand, rinsing the soap off with the hands held under the warm
running water, and drying the hands with a disposable paper towel is:
Noncritical items, i.e., items that contact only skin during their intended use may
be disinfected with an EPA-registered intermediate level disinfectant without a
tuberculocidal claim. - ans -False
All of the following statements are correct in relation to laboratory asepsis
EXCEPT: - ans -Metal impression trays and face bow forks may be disinfected with
an EPA registered hospital level disinfectant with tuberculocidal claim
Which of the following are considered Category I procedures, i.e., procedures
with minimal risk of bloodborne pathogen transmission? - ans -routine preventive
dental procedures - not requiring the administration of local anesthesia
The sequence of putting on PPE is as follows: (1) perform appropriate hand
hygiene, (2) put on gloves, (3) put on gown, (4) put on mask, (5) put on goggles or
face shield. - ans -False
, When using a particulate filter respirator, the sequence of removing PPE is as
follows: (1) remove gloves, (2) remove goggles or face shield, (3) remove gown,
(4) remove particulate filter respirator, and (5) perform hand hygiene before
leaving room. - ans -False
All of the following statements about the preparatory and treatment phase of
environmental infection control in the treatment room are correct EXCEPT: - ans -
open packs in advance of the patient's arrival to confirm that the internal
chemical indicators have changed to the appropriate color
All of the following statements are correct with respect to activities at the
receiving and cleaning station of the central processing EXCEPT: - ans -remove any
residual organic or inorganic debris wearing puncture resistant, heavy-duty utility
gloves and a hard, short handled brush
All of the following segments are correct with respect to respiratory
hygiene/cough etiquette EXCEPT: Source control measure include educating
health care personnel, patients, and visitors about the importance of: - ans -
having the source person wear a particulate filter respirator
All of the following are true about spatter droplets, EXCEPT: - ans -They may
become suspended in air for long periods of time
The highest level of aerosol and splatter emission has been shown to occur with
the use of: - ans -ultrasonic scaler
SARS-CoV2 may survive on hard surfaces up to: - ans -72 hours
Current CDC guidance suggests that procedures that produce high levels of
aerosols, in particular those that demonstrate exposure to infectious secretions
or are likely to induce coughing should be avoided, is possible. If such procedures
must be performed, the CDC suggests use of an N95 or great respirator and other
PPE, limiting the number of healthcare providers to those that are essential for
the procedure, and performance of aerosol-generating procedures in an airborne
infection isolation room. - ans -Both statements are true.
update|comprehensive questions and verified answers
(complete solutions) GRADE A+
All of the following statements are correct in relation to hepatitis B vaccination
EXCEPT: - ans -Post-vaccination confirmation of seroconversion is mandated 1-2
months after the third dose
All of the following statement with respect to Hepatitis B vaccination are true
EXCEPT: - ans -The US Public Health Service recommends routine booster doses of
the Hep B vaccine
Antiseptic handwashing - ans -The technique of wetting the hands under warm
running water, applying an antimicrobial soap (e.g., chlorhexidine, iodine, and
iodophors, chloroxylenol, or triclosan), rubbing the hands together vigorously for
15 seconds to work up a lather, using the fingernails to clean the fingernails on
the opposing hand, rinsing the soap off with the hands held under the warm
running water, and drying the hands with a disposable paper towel is:
Noncritical items, i.e., items that contact only skin during their intended use may
be disinfected with an EPA-registered intermediate level disinfectant without a
tuberculocidal claim. - ans -False
All of the following statements are correct in relation to laboratory asepsis
EXCEPT: - ans -Metal impression trays and face bow forks may be disinfected with
an EPA registered hospital level disinfectant with tuberculocidal claim
Which of the following are considered Category I procedures, i.e., procedures
with minimal risk of bloodborne pathogen transmission? - ans -routine preventive
dental procedures - not requiring the administration of local anesthesia
The sequence of putting on PPE is as follows: (1) perform appropriate hand
hygiene, (2) put on gloves, (3) put on gown, (4) put on mask, (5) put on goggles or
face shield. - ans -False
, When using a particulate filter respirator, the sequence of removing PPE is as
follows: (1) remove gloves, (2) remove goggles or face shield, (3) remove gown,
(4) remove particulate filter respirator, and (5) perform hand hygiene before
leaving room. - ans -False
All of the following statements about the preparatory and treatment phase of
environmental infection control in the treatment room are correct EXCEPT: - ans -
open packs in advance of the patient's arrival to confirm that the internal
chemical indicators have changed to the appropriate color
All of the following statements are correct with respect to activities at the
receiving and cleaning station of the central processing EXCEPT: - ans -remove any
residual organic or inorganic debris wearing puncture resistant, heavy-duty utility
gloves and a hard, short handled brush
All of the following segments are correct with respect to respiratory
hygiene/cough etiquette EXCEPT: Source control measure include educating
health care personnel, patients, and visitors about the importance of: - ans -
having the source person wear a particulate filter respirator
All of the following are true about spatter droplets, EXCEPT: - ans -They may
become suspended in air for long periods of time
The highest level of aerosol and splatter emission has been shown to occur with
the use of: - ans -ultrasonic scaler
SARS-CoV2 may survive on hard surfaces up to: - ans -72 hours
Current CDC guidance suggests that procedures that produce high levels of
aerosols, in particular those that demonstrate exposure to infectious secretions
or are likely to induce coughing should be avoided, is possible. If such procedures
must be performed, the CDC suggests use of an N95 or great respirator and other
PPE, limiting the number of healthcare providers to those that are essential for
the procedure, and performance of aerosol-generating procedures in an airborne
infection isolation room. - ans -Both statements are true.
