CAISS Test Bank 2023-2024;All Possible Questions and
Answers Guaranteed Success
Origins of AIS (3)
1) Standardized system
2) Classify type/severity of injury from MVC
3) Consensus
Injury descriptors are organized _________________________ ?
Anatomically
Injury severity is ranked relative to its importance to _______________?
The whole body
AIS reflects severity of single injuries and are unaffected by what three things?
1) time
2) sequela
3) outcome
What type of scale does AIS use?
6 point ordinal scale
Which type of measurement is more variable? Anatomic or Physiologic?
Physiologic
Is clinical training necessary for collecting injury data?
NO
AIS is based on what three (3) factors?
1) anatomically- based
2) consensus driven
3) global
Severity is NOT contingent upon what two (2) factors?
1) Outcome
2) time
Numerical ranking of severity: 1
minor
Numerical ranking of severity: 2
moderate
Numerical ranking of severity: 3
serious
Numerical ranking of severity: 4
severe
Numerical ranking of severity: 5
critical
Numerical ranking of severity: 6
maximum (currently untreatable)
Is mortality a sole determinant of AIS severity?
NO
Are all AIS data comparable from year to year?
NO (updates)
Is "DEATH" part of the severity scale?
,NO
Is a patient who dies automatically assigned the highest AIS severity of 6?
NO (patients w/ minor injuries can die)
Does a linear relationship exist between AIS severity codes?
NO (AIS 4 is more, NOT twice as severe as AIS 2)
Are all injuries within the same AIS code strictly compatible?
NO (tibia fx & alveolar ridge are both AIS - 2, although one may be worse than the
other, both are considered 'moderate')
What AIS code is assigned to a patient with inadequate information regarding an
injury?
9
AIS single digit severity codes are based on what type of patient?
Average
What four (4) things define the "average" patient?
1) 25-40 yrs old
2) no pre-existing conditions
3) no tx complications
4) received timely/appropriate care
Approximately how many injury descriptors are included in AIS?
2000
What part of the AIS code is considered the "Pre-Dot Code?"
6 digits BEFORE the decimal point (left)
What part of the AIS code is considered the "AIS Severity Number?"
single digit after the decimal (right)
(T/F) The 6 digit pre-dot codes are unique and allow for more specificity and
accurate coding?
TRUE
The first digit in the pre-dot code corresponds to what?
Body Region
The second digit in the pre-dot code corresponds to what?
Type of anatomic structure (skeletal, solid organ)
The third/fourth digits in the pre-dot code correspond to what?
Specific anatomic structure (femur)
The fifth/sixth digits in the pre-dot code correspond to what?
Level of injury within the specific body region and anatomic structure (NFS, minor,
major)
Parenthesis in the AIS dictionary indicate what?
synonyms or definitions for injury types
Brackets in the AIS dictionary indicate what?
inclusionary/exclusionary info, OIS Grades
Boxed bold type in the AIS dictionary indicates what?
directions to help coder choose appropriate code
Semicolons in the AIS dictionary indicate what?
separate injury descriptors that are comparable in severity
Italics in the AIS dictionary indicate what?
proper-named injuries/structures, OIS grades
, Does AIS assess the severity of multiple injuries?
NO (single injury severity only)
The injury Severity Score (ISS) is defined as what?
Sum of the squares of highest AIS in each of three most severely injured ISS body
regions.
What are the six body regions used in the ISS?
1) head & neck
2) face
3) chest
4) abdomen & pelvic organs
5) extremities & pelvis
6) external
Asphyxia is assigned to which ISS region?
Head and Neck
Drowning is assigned to which ISS region?
Chest
Lumbar spine lesions would be assigned to which ISS region?
Abdomen & pelvic contents
Are external injuries coded independent of their body region?
YES
Hypothermia, electrical injuries, and whole body injuries are coded to which ISS
region?
External
The ISS score ranged from _____ to _____ ?
1 to 75
What are the two ways an ISS of 75 can be achieved?
1) AIS of 5 in each of three different body regions
2) AIS of 6 in a single body region
Do patients with an AIS 9 achieve an accurate ISS score?
NO
Can less than three regions be used to calculate an ISS?
YES
Can more than three regions be used to calculate an ISS?
NO
Do all ISS scores have the same mortality rates?
NO (depends on body regions affected)
Assigning injuries to too few body regions results in what?
underestimation of ISS
Assigning injuries to too many body regions results in what?
overestimation of ISS
Are complications or sequela included in the definition of an injury?
NO
Define injury?
Anatomic lesion resulting from transfer of injury.
List seven (7) examples of sequela that are coded in AIS as injuries?
Answers Guaranteed Success
Origins of AIS (3)
1) Standardized system
2) Classify type/severity of injury from MVC
3) Consensus
Injury descriptors are organized _________________________ ?
Anatomically
Injury severity is ranked relative to its importance to _______________?
The whole body
AIS reflects severity of single injuries and are unaffected by what three things?
1) time
2) sequela
3) outcome
What type of scale does AIS use?
6 point ordinal scale
Which type of measurement is more variable? Anatomic or Physiologic?
Physiologic
Is clinical training necessary for collecting injury data?
NO
AIS is based on what three (3) factors?
1) anatomically- based
2) consensus driven
3) global
Severity is NOT contingent upon what two (2) factors?
1) Outcome
2) time
Numerical ranking of severity: 1
minor
Numerical ranking of severity: 2
moderate
Numerical ranking of severity: 3
serious
Numerical ranking of severity: 4
severe
Numerical ranking of severity: 5
critical
Numerical ranking of severity: 6
maximum (currently untreatable)
Is mortality a sole determinant of AIS severity?
NO
Are all AIS data comparable from year to year?
NO (updates)
Is "DEATH" part of the severity scale?
,NO
Is a patient who dies automatically assigned the highest AIS severity of 6?
NO (patients w/ minor injuries can die)
Does a linear relationship exist between AIS severity codes?
NO (AIS 4 is more, NOT twice as severe as AIS 2)
Are all injuries within the same AIS code strictly compatible?
NO (tibia fx & alveolar ridge are both AIS - 2, although one may be worse than the
other, both are considered 'moderate')
What AIS code is assigned to a patient with inadequate information regarding an
injury?
9
AIS single digit severity codes are based on what type of patient?
Average
What four (4) things define the "average" patient?
1) 25-40 yrs old
2) no pre-existing conditions
3) no tx complications
4) received timely/appropriate care
Approximately how many injury descriptors are included in AIS?
2000
What part of the AIS code is considered the "Pre-Dot Code?"
6 digits BEFORE the decimal point (left)
What part of the AIS code is considered the "AIS Severity Number?"
single digit after the decimal (right)
(T/F) The 6 digit pre-dot codes are unique and allow for more specificity and
accurate coding?
TRUE
The first digit in the pre-dot code corresponds to what?
Body Region
The second digit in the pre-dot code corresponds to what?
Type of anatomic structure (skeletal, solid organ)
The third/fourth digits in the pre-dot code correspond to what?
Specific anatomic structure (femur)
The fifth/sixth digits in the pre-dot code correspond to what?
Level of injury within the specific body region and anatomic structure (NFS, minor,
major)
Parenthesis in the AIS dictionary indicate what?
synonyms or definitions for injury types
Brackets in the AIS dictionary indicate what?
inclusionary/exclusionary info, OIS Grades
Boxed bold type in the AIS dictionary indicates what?
directions to help coder choose appropriate code
Semicolons in the AIS dictionary indicate what?
separate injury descriptors that are comparable in severity
Italics in the AIS dictionary indicate what?
proper-named injuries/structures, OIS grades
, Does AIS assess the severity of multiple injuries?
NO (single injury severity only)
The injury Severity Score (ISS) is defined as what?
Sum of the squares of highest AIS in each of three most severely injured ISS body
regions.
What are the six body regions used in the ISS?
1) head & neck
2) face
3) chest
4) abdomen & pelvic organs
5) extremities & pelvis
6) external
Asphyxia is assigned to which ISS region?
Head and Neck
Drowning is assigned to which ISS region?
Chest
Lumbar spine lesions would be assigned to which ISS region?
Abdomen & pelvic contents
Are external injuries coded independent of their body region?
YES
Hypothermia, electrical injuries, and whole body injuries are coded to which ISS
region?
External
The ISS score ranged from _____ to _____ ?
1 to 75
What are the two ways an ISS of 75 can be achieved?
1) AIS of 5 in each of three different body regions
2) AIS of 6 in a single body region
Do patients with an AIS 9 achieve an accurate ISS score?
NO
Can less than three regions be used to calculate an ISS?
YES
Can more than three regions be used to calculate an ISS?
NO
Do all ISS scores have the same mortality rates?
NO (depends on body regions affected)
Assigning injuries to too few body regions results in what?
underestimation of ISS
Assigning injuries to too many body regions results in what?
overestimation of ISS
Are complications or sequela included in the definition of an injury?
NO
Define injury?
Anatomic lesion resulting from transfer of injury.
List seven (7) examples of sequela that are coded in AIS as injuries?
