, Question 1
A health system wants to reduce alert fatigue without compromising safety.
Which informatics strategy best balances sensitivity and specificity in a CDS
rule set?
A. Suppress all low-severity alerts and rely on clinician override
documentation.
B. Tier alerts by clinical urgency, incorporate patient-specific data, and
require justification only for high-severity overrides.
C. Increase alert volume to ensure no critical event is missed, then audit
retrospectively.
D. Disable interruptive alerts and replace them with a weekly email
summary.
Correct Answer: B - Tier alerts by clinical urgency, incorporate
patient-specific data, and require justification only for
high-severity overrides.
RATIONALE
Tiering alerts by urgency with patient-specific contextualization
preserves sensitivity for critical events while reducing non-actionable
interruptions, directly addressing alert fatigue. Suppressing
low-severity alerts without contextual logic (A) risks missing nuanced
safety signals, while increasing volume (C) worsens fatigue and
override rates. A weekly summary (D) removes real-time decision
support entirely.
Question 2
In a meta-analysis of nurse-led interventions, heterogeneity is I² = 78%. Which
interpretation is most defensible?
A. The pooled effect is invalid and should be discarded.
B. Substantial heterogeneity suggests exploring subgroup or
meta-regression analyses to identify moderators.
C. I² of 78% indicates the studies are homogeneous and can be combined
Page 2
, without concern.
D. Heterogeneity is irrelevant when the random-effects model is used.
Correct Answer: B - Substantial heterogeneity suggests exploring
subgroup or meta-regression analyses to identify moderators.
RATIONALE
I² of 78% indicates substantial inconsistency across studies,
warranting investigation of clinical, methodological, or statistical
moderators via subgroup or meta-regression analysis. Discarding the
pooled effect entirely (A) is overly dismissive; I² does not invalidate
the analysis but requires cautious interpretation. Homogeneity (C) is
incorrect because high I² denotes heterogeneity, and random-effects
models (D) account for but do not eliminate heterogeneity.
Question 3
Which action best demonstrates the advanced practice nurse's role in
translational science when implementing a new evidence-based sepsis
protocol?
A. Publishing the protocol in a peer-reviewed journal without local
adaptation.
B. Using the Iowa Model to identify triggers, pilot the change, and
evaluate outcomes with run charts.
C. Adopting the protocol verbatim from a national guideline without
assessing organizational readiness.
D. Delegating implementation entirely to the unit educator without
interprofessional input.
Correct Answer: B - Using the Iowa Model to identify triggers,
pilot the change, and evaluate outcomes with run charts.
Page 3
, RATIONALE
Translational science requires systematic, context-sensitive
implementation; the Iowa Model supports identifying triggers,
piloting, and evaluating outcomes with run charts. Publishing without
adaptation (A) ignores local context, verbatim adoption (C) neglects
readiness and adaptation, and delegating without interprofessional
input (D) undermines team-based change.
Question 4
A study reports a number needed to treat (NNT) of 25 for a new intervention.
Which statement is most accurate?
A. 25 patients must be treated for one additional patient to benefit.
B. 25% of patients will experience the desired outcome.
C. The intervention reduces risk by 25%.
D. The intervention is not clinically significant because NNT is too high.
Correct Answer: A - 25 patients must be treated for one
additional patient to benefit.
RATIONALE
NNT is the reciprocal of the absolute risk reduction, representing the
number of patients who must be treated for one additional patient to
benefit. It does not represent a percentage of patients achieving the
outcome (B), a relative risk reduction (C), or an automatic threshold of
clinical significance (D), which depends on context and baseline risk.
Question 5
Which scenario best illustrates a breach of the HIPAA minimum necessary
standard in nursing informatics practice?
A. A nurse accesses a patient's record to coordinate care with the
interprofessional team.
B. A quality improvement team reviews de-identified aggregate data for
unit-level trends.
Page 4
A health system wants to reduce alert fatigue without compromising safety.
Which informatics strategy best balances sensitivity and specificity in a CDS
rule set?
A. Suppress all low-severity alerts and rely on clinician override
documentation.
B. Tier alerts by clinical urgency, incorporate patient-specific data, and
require justification only for high-severity overrides.
C. Increase alert volume to ensure no critical event is missed, then audit
retrospectively.
D. Disable interruptive alerts and replace them with a weekly email
summary.
Correct Answer: B - Tier alerts by clinical urgency, incorporate
patient-specific data, and require justification only for
high-severity overrides.
RATIONALE
Tiering alerts by urgency with patient-specific contextualization
preserves sensitivity for critical events while reducing non-actionable
interruptions, directly addressing alert fatigue. Suppressing
low-severity alerts without contextual logic (A) risks missing nuanced
safety signals, while increasing volume (C) worsens fatigue and
override rates. A weekly summary (D) removes real-time decision
support entirely.
Question 2
In a meta-analysis of nurse-led interventions, heterogeneity is I² = 78%. Which
interpretation is most defensible?
A. The pooled effect is invalid and should be discarded.
B. Substantial heterogeneity suggests exploring subgroup or
meta-regression analyses to identify moderators.
C. I² of 78% indicates the studies are homogeneous and can be combined
Page 2
, without concern.
D. Heterogeneity is irrelevant when the random-effects model is used.
Correct Answer: B - Substantial heterogeneity suggests exploring
subgroup or meta-regression analyses to identify moderators.
RATIONALE
I² of 78% indicates substantial inconsistency across studies,
warranting investigation of clinical, methodological, or statistical
moderators via subgroup or meta-regression analysis. Discarding the
pooled effect entirely (A) is overly dismissive; I² does not invalidate
the analysis but requires cautious interpretation. Homogeneity (C) is
incorrect because high I² denotes heterogeneity, and random-effects
models (D) account for but do not eliminate heterogeneity.
Question 3
Which action best demonstrates the advanced practice nurse's role in
translational science when implementing a new evidence-based sepsis
protocol?
A. Publishing the protocol in a peer-reviewed journal without local
adaptation.
B. Using the Iowa Model to identify triggers, pilot the change, and
evaluate outcomes with run charts.
C. Adopting the protocol verbatim from a national guideline without
assessing organizational readiness.
D. Delegating implementation entirely to the unit educator without
interprofessional input.
Correct Answer: B - Using the Iowa Model to identify triggers,
pilot the change, and evaluate outcomes with run charts.
Page 3
, RATIONALE
Translational science requires systematic, context-sensitive
implementation; the Iowa Model supports identifying triggers,
piloting, and evaluating outcomes with run charts. Publishing without
adaptation (A) ignores local context, verbatim adoption (C) neglects
readiness and adaptation, and delegating without interprofessional
input (D) undermines team-based change.
Question 4
A study reports a number needed to treat (NNT) of 25 for a new intervention.
Which statement is most accurate?
A. 25 patients must be treated for one additional patient to benefit.
B. 25% of patients will experience the desired outcome.
C. The intervention reduces risk by 25%.
D. The intervention is not clinically significant because NNT is too high.
Correct Answer: A - 25 patients must be treated for one
additional patient to benefit.
RATIONALE
NNT is the reciprocal of the absolute risk reduction, representing the
number of patients who must be treated for one additional patient to
benefit. It does not represent a percentage of patients achieving the
outcome (B), a relative risk reduction (C), or an automatic threshold of
clinical significance (D), which depends on context and baseline risk.
Question 5
Which scenario best illustrates a breach of the HIPAA minimum necessary
standard in nursing informatics practice?
A. A nurse accesses a patient's record to coordinate care with the
interprofessional team.
B. A quality improvement team reviews de-identified aggregate data for
unit-level trends.
Page 4
