Why High Bundle Compliance Doesn’t Always Mean Low CLABSI Risk

Central line-associated bloodstream infections (CLABSIs) remain one of the most closely monitored healthcare-associated infections because of their severity, preventability, and impact on patient outcomes (Centers for Disease Control and Prevention (CDC), 2023; Marschall et al., 2014). Across many organizations, bundle compliance has become the primary method used to monitor prevention efforts. Daily line necessity reviews are completed. Linen changes are documented. Baths are performed. Dressings are dated. Caps are changed.

On paper, everything appears compliant. Yet infections can still occur. This creates an important question for healthcare teams, if compliance is high, why does risk sometimes remain?

The answer often lies in the difference between technical completion and true risk reduction.

Compliance Does Not Always Equal Risk Elimination

Bundles are designed to reduce infection risk by standardizing evidence-based practices (Pronovost et al., 2006). They are highly valuable because they create consistency and accountability across care teams. However, bundle documentation can sometimes become focused on whether a task was completed rather than whether the original infection risk was actually removed.

This creates what can be described as a bundle compromise: a situation where a bundle element is technically completed, but surrounding conditions continue to allow infection risk to persist. In these situations, organizations may achieve high compliance scores while hidden vulnerabilities remain at the bedside.

The issue is not necessarily that staff are ignoring protocols. In many cases, care teams are working hard and completing required tasks. The problem is that measurement systems sometimes capture activity without fully evaluating the quality, effectiveness, or integrity of the intervention itself (World Health Organization (WHO), 2016).

When Compliance Looks Good but Risk Remains

Daily Linen Change Completed, but Contamination Sources Remain

A patient may receive clean hospital linens daily according to protocol. The linen change is documented as compliant.

However, the patient’s bed may still contain:

• Unlaundered personal blankets brought from home
• Jackets, bags, or clothing placed near the central line site
• Stuffies or reusable fabrics with unknown cleaning histories
• Overcrowded bedspaces that increase environmental contamination risks

Technically, the bundle element was completed. Functionally, contamination sources may still remain in direct proximity to the line.

The intended infection prevention goal was not simply to replace hospital linens. The goal was to reduce contamination exposure around the patient and central line environment.

Daily Line Necessity Review Completed, but Unnecessary Access Points Remain

A clinician may appropriately document that the central line is still medically necessary.

However:

• Unused lumens may remain accessible
• Idle ports may remain attached unnecessarily
• Secondary tubing may remain connected without current use
• Old extensions or stopcocks may continue to increase manipulation points

The necessity review becomes compliant from a documentation perspective, but opportunities for contamination may still remain embedded within the line setup itself.

The question becomes not only, Is the line still needed? But also, Is every remaining component still necessary?

Daily Bath or CHG Treatment Completed, but Application Quality Varies

A chlorhexidine gluconate (CHG) bath may be documented as completed every day (Marschall et al., 2014). Yet risk may persist if:

• CHG is wiped off too quickly before drying
• Areas around the line are missed
• Product contact time is insufficient
• Heavy perspiration, drainage, or soiling rapidly compromises effectiveness
• Patients refuse portions of care that are still charted as completed
• Additional products are applied afterward that interfere with CHG activity

In these cases, the intervention occurred, but the protective effect may have been reduced. The difference between performed and performed effectively matters. Bundle efficacy matters.

Dressing Integrity Documented, but Micro-Disruptions Exist

Dressings are often assessed daily and may appear intact during scheduled observations.

However, small compromises may still occur between assessments:

• Dressings lifting during repositioning
• Moisture accumulation under transparent dressings
• Wrinkling around insertion sites
• Edges loosening after sweating or bathing
• Dressings becoming stressed during linen changes
• Patients touching or scratching around the site

A dressing may technically remain present while its protective seal has already been compromised. This is especially important because contamination risks are not always dramatic or immediately visible.

Caps Changed on Schedule, but Handling Practices Introduce Risk

Disinfection caps may be replaced according to protocol timelines. Yet contamination opportunities can still occur if:

• Ports are repeatedly manipulated between cap changes
• Hand hygiene is inconsistent before access
• Ports contact linens or clothing
• Caps are removed and reattached improperly
• Staff assume the cap alone replaces proper hub disinfection

The bundle element becomes a checklist item rather than part of a larger contamination prevention process.

IV Tubing Within Date, but Workflow Risks Continue

Tubing may be changed according to policy frequency requirements (CDC, 2023).

However:

• Tubing may drape onto contaminated surfaces
• Excess tubing may become tangled in linens
• Connections may loosen during patient movement
• Emergency access events may bypass ideal aseptic technique
• Labeling may be present while actual tubing organization remains poor

The tubing itself may be compliant while the surrounding handling environment still introduces risk.

Secured Lines Are Not Always Protected Lines

A line may be documented as secured. But risk can persist if:

• Securement devices loosen over time
• Tension occurs during transfers or repositioning
• Patients repeatedly pull at tubing
• Multiple devices create line crowding
• Securement reduces movement in one area while increasing stress elsewhere

Securement is not only about attachment. It is about maintaining stability throughout ongoing patient care activities.

The Hidden Gap: Measuring Completion Instead of Effectiveness

One of the largest challenges in infection prevention is that many compliance systems measure whether a step occurred, not whether the intervention successfully removed or minimized the intended risk. This creates a dangerous assumption that if compliance is high, risk must be low. In reality, risk can survive inside partially effective practices, workflow shortcuts, environmental conditions, or overlooked details that fall outside the measurement criteria (WHO, 2016). A task can be completed while its protective purpose is weakened.

Moving From Bundle Compliance to Bundle Efficacy

This does not mean bundles are ineffective. Bundle approaches remain essential in CLABSI prevention (CDC, 2023; Pronovost et al., 2006). However, organizations may strengthen prevention efforts by evolving from:

• Was the task completed? to
• Was the infection risk meaningfully reduced?

This introduces the concept of bundle efficacy. Bundle efficacy-focused assessment examines whether the intervention fully achieved its intended infection prevention purpose under real clinical conditions.

For example:

Instead of asking was linen changed? Teams may also ask, were contamination sources removed from the patient environment?

Instead of was line necessity reviewed? Teams may ask were unnecessary access points eliminated?

Instead of was the dressing intact? Teams may ask did the dressing maintain an effective seal throughout patient care activities?

This shift moves organizations closer to evaluating true protection rather than procedural completion alone.

Why This Matters

CLABSI prevention is rarely defeated by one large failure. More often, risk persists through small compromises that individually appear minor but collectively weaken protection barriers over time.

• A slightly loose dressing.
• An unnecessary port.
• A contaminated blanket.
• A rushed bath.
• A line manipulated one extra time.

When these small vulnerabilities overlap, infection opportunities increase even in environments reporting strong compliance rates. Recognizing these hidden gaps helps organizations move beyond checkbox thinking toward deeper prevention awareness. Because the goal of bundle compliance is not simply to complete tasks. The goal is to remove risk.

References

Centers for Disease Control and Prevention. (2023). Guidelines for the prevention of intravascular catheter-related infections. https://www.cdc.gov/infection-control/hcp/intravascular-catheter-related-infection/index.html

Marschall, J., Mermel, L. A., Fakih, M., Hadaway, L., Kallen, A., O’Grady, N. P., Pettis, A. M., Rupp, M. E., Sandora, T., Maragakis, L. L., & Yokoe, D. S. (2014). Strategies to prevent central line–associated bloodstream infections in acute care hospitals: 2014 update. Infection Control & Hospital Epidemiology, 35(7), 753–771.

Pronovost, P., Needham, D., Berenholtz, S., Sinopoli, D., Chu, H., Cosgrove, S., Sexton, J. B., Hyzy, R., Welsh, R., Roth, G., Bander, J., Kepros, J., & Goeschel, C. (2006). An intervention to decrease catheter-related bloodstream infections in the ICU. New England Journal of Medicine, 355(26), 2725–2732.

World Health Organization. (2016). Improving infection prevention and control at the health facility level: Interim practical manual. https://www.who.int/publications