Situation: The infection prevention and control committee re… | 마이메르시 MyMerci
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Nursing Practice III — Care of Clients with Problems in Surgery, Oxygenation, Fluid and Electrolytes, Infectious, Inflammatory and Immunologic Response, Cellular Aberrations
문제

Situation: The infection prevention and control committee reports that the catheter-associated urinary tract infection (CAUTI) rate on a 32-bed adult surgical ward has been above the hospital target for two quarters. The head nurse forms an improvement team of staff nurses, a urologist, and an infection control nurse. The team audits 20 catheterized clients against a four-element catheter bundle: Documented indication: 18 of 20 Drainage bag below the bladder and off the floor: 17 of 20 Closed drainage system intact: 20 of 20 Daily review of the need for the catheter: 15 of 20 Twelve clients met all four elements. What is the ward's bundle compliance?

해설
A care bundle works when all its elements are done together, every time, so compliance is measured all-or-none: a client counts as compliant only if every element was met. Twelve of 20 clients met all four elements, so compliance = 12 ÷ 20 × 100 = 60%. Averaging the elements or reporting a single element overstates compliance.
같은 주제 다음 문제Situation: The adult medical ward of a tertiary hospital reviews its medication safety eve…이 문제가 수록된 문제집PLNE Question Bank 150014,000원 · 무료 체험 가능

심화 해설



Clinical context

This question tests how a CAUTI care bundle is scored. The ward audited 20 catheterized clients and found that 12 met all four bundle elements. The key concept is that bundle compliance is an all-or-none measure, not an average of individual element performance.




Why bundle compliance is calculated all-or-none

A care bundle is a small set of evidence-based interventions that, when performed together and consistently, produce better outcomes than when any single element is applied alone. The defining feature of bundle measurement is that a client is counted as compliant only when every element in the bundle is completed for that client. If even one element is missed, that client is not compliant. This approach reflects the clinical reality that partial application of a bundle does not reliably prevent the targeted complication.



In this audit, the four elements were:



  • Documented indication for the catheter

  • Drainage bag below the bladder and off the floor

  • Closed drainage system intact

  • Daily review of the need for the catheter



Although individual element performance looks high — 18 of 20 had a documented indication, 17 had correct bag positioning, 20 had an intact closed system, and 15 had daily review — these numbers cannot be averaged to determine bundle compliance. The only number that matters is how many clients satisfied all four criteria simultaneously: 12.



Step-by-step calculation

The formula is straightforward:


Bundle compliance = (Number of clients meeting all elements ÷ Total number of clients audited) × 100


Bundle compliance = (12 ÷ 20) × 100 = 60%



Watch out! If you averaged the four element percentages — 90%, 85%, 100%, and 75% — you would get 87.5%, which is one of the distractors. This overstates true compliance because it ignores that different clients missed different elements. Averaging hides the fact that only 12 clients had all four elements done correctly.



Why all-or-none measurement matters for infection prevention

CAUTI prevention depends on simultaneous adherence to multiple independent steps. A documented indication supports timely removal, but if the drainage bag is positioned incorrectly, reflux can still introduce organisms. An intact closed system prevents ascending contamination, but without daily review, a catheter may remain in place longer than necessary, prolonging risk. The protective effect of the bundle is only realized when all elements are applied to the same client at the same time.



Surveillance data reinforce why this rigor is clinically important. CAUTI rates vary widely across settings and are influenced by device utilization and adherence to preventive practices . Studies comparing catheter types or reporting incidence trends consistently emphasize that prevention requires systematic, multi-component strategies rather than isolated fixes . An all-or-none compliance metric aligns quality measurement with this principle: it forces teams to identify the specific clients who are missing any element and address those gaps directly.



Interpreting the audit findings for practice

This ward’s 60% bundle compliance means 8 of 20 clients had at least one element missing. The most frequently missed element was daily review of catheter need (15 of 20), followed by drainage bag positioning (17 of 20) and documented indication (18 of 20). The closed drainage system was universally intact, which is encouraging but insufficient on its own.



Calculation methodResultInterpretation
All-or-none bundle compliance60%Correct — reflects clients meeting every element
Average of four element percentages87.5%Overestimates — masks that different clients missed different elements
Single best element (closed system)100%Misleading — one element alone does not prevent CAUTI
Daily review element only75%Underestimates overall bundle performance but identifies the priority gap


Key point! For any care bundle — CAUTI, CLABSI, VAP, or sepsis — compliance is reported as the percentage of patients who received all bundle elements. Do not average individual element compliance rates when a question asks for overall bundle compliance.


임상 시나리오

CAUTI Bundle Compliance: All-or-None ScoringWhy averaging individual elements overstates performance

A care bundle is scored as all-or-none: a client counts as compliant only when every element is completed. In this audit, 12 of 20 clients met all four elements, so compliance is 12 ÷ 20 × 100 = 60%.

Individual element performance may look high—90% had a documented indication, 85% had correct bag positioning, 100% had an intact closed system, and 75% had daily review—but averaging these numbers is incorrect and overstates true bundle reliability.

Caution

Do not report single-element compliance or an average as the bundle rate. A client missing even one element is non-compliant for that bundle, because partial application does not reliably prevent CAUTI.

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