Preventing Catheter-Related Skin Injury in Hospitalized Patients

Abstract

Catheter-related skin injury (CRSI) is a common yet under-recognized complication in the care of hospitalized patients, leading to increased morbidity, prolonged hospital stays, and elevated healthcare costs. This review synthesizes the latest evidence regarding the epidemiology, pathophysiology, risk factors, clinical features, diagnostic strategies, management, and prevention of CRSI, with a particular focus on evidence-based guidelines and emerging innovations. Emphasis is placed on practical, mechanism-based approaches to minimize skin injury, optimize patient outcomes, and support multidisciplinary care teams in implementing effective prevention strategies.

Introduction

Intravascular catheters are indispensable in modern healthcare, facilitating medication administration, monitoring, and life-sustaining therapies. However, their use is not without risk; catheter-related skin injury represents a significant source of iatrogenic harm. Recognizing the clinical burden of CRSI, understanding its pathophysiology, and implementing targeted prevention strategies are critical for clinicians, especially as patient populations become increasingly complex and vulnerable. Recent guidelines and research have shifted focus toward proactive injury prevention and multidisciplinary stewardship.

Epidemiology / Disease Burden

Catheter-related skin injuries are prevalent in both adult and pediatric inpatient settings, with reported incidence ranging from 5% to 20% depending on patient population and catheter type. Central venous catheters (CVCs), peripherally inserted central catheters (PICCs), and peripheral intravenous catheters are all implicated. The true burden is likely underestimated, as mild injuries often go unreported. CRSI contributes to increased length of stay, secondary infections, patient discomfort, and, in severe cases, loss of vascular access or need for surgical intervention. Cost analyses reveal significant financial impact due to extra care, wound management, and extended hospitalization.

Pathophysiology

The development of CRSI is multifactorial, involving mechanical, chemical, and biological processes. Mechanical injury results from friction, shear, or pressure at the catheter-skin interface, often exacerbated by poorly secured devices or patient movement. Chemical injuries arise from irritant or allergic reactions to adhesives, dressings, or antiseptics. Moisture-associated skin damage occurs due to occlusion, perspiration, or exudate accumulation under dressings, compromising skin barrier function. Additionally, microbial colonization can precipitate local inflammation and impede healing. Understanding these mechanisms guides the selection of preventive interventions tailored to individual risk profiles.

Risk Factors

Multiple patient- and device-related factors modulate CRSI risk. Patient-specific risks include advanced age, neonatal or pediatric status, compromised skin integrity (e.g., from edema, malnutrition, corticosteroid therapy), immunosuppression, and underlying dermatologic conditions. Device-related risks encompass catheter type, dwell time, insertion site, use of harsh adhesives, and frequency of dressing changes. Environmental factors such as humidity and inadequate staffing also play contributory roles. Accurate risk stratification supports targeted prevention and surveillance protocols.

Clinical Features

CRSI manifests along a spectrum from mild erythema or irritation to severe ulceration, blistering, and necrosis. Early signs include localized redness, edema, and discomfort at the catheter insertion site. Progression may yield bullae, erosion, or denudation of skin, increasing susceptibility to secondary infection. Allergic contact dermatitis may present as pruritic, eczematous lesions, while chemical burns are often marked by pain and ulceration. Prompt recognition and differentiation from other catheter complications (e.g., infection, extravasation) are essential for effective management.

Diagnosis

Diagnosis of CRSI is primarily clinical, based on inspection and patient-reported symptoms. Assessment tools such as the Insertion Site Assessment Tool (ISAT) and standardized skin injury scales facilitate objective documentation. Differential diagnosis includes pressure injuries, extravasation injuries, and local infections. In ambiguous cases, dermatologic consultation or skin biopsy may be warranted. Photographic documentation and serial monitoring support evaluation of injury progression and therapeutic response.

Treatment & Management

Management of CRSI centers on prompt removal or repositioning of the offending catheter, wound care, and mitigation of further skin insult. Mild injuries may respond to topical corticosteroids or barrier creams, while severe lesions may require advanced dressings, negative pressure wound therapy, or plastic surgical intervention. Addressing underlying risk factors, such as optimizing nutrition and glycemic control, enhances healing. Multidisciplinary collaboration including nursing, dermatology, and wound care specialists is vital for optimal outcomes. Patient and caregiver education regarding skin inspection and reporting is also crucial.

Recent Advances / Emerging Therapies

Recent advances in CRSI prevention include the development of atraumatic, silicone-based securement devices, hydrocolloid and foam dressings with superior moisture management, and non-alcoholic, hypoallergenic adhesive products. Antimicrobial dressings and transparent film dressings with improved breathability have shown efficacy in reducing both skin injury and catheter-related bloodstream infections. Digital monitoring systems and artificial intelligence algorithms are being explored for real-time risk assessment and early detection. Ongoing research into skin microbiome modulation and novel barrier-enhancing agents holds promise for future prophylaxis.

Guideline Recommendations

Contemporary guidelines from organizations such as the Infusion Nurses Society (INS), Centers for Disease Control and Prevention (CDC), and Association for Professionals in Infection Control and Epidemiology (APIC) emphasize regular assessment of catheter sites, use of atraumatic securement and removal techniques, and selection of skin-friendly dressings. Protocols recommend minimizing dwell time, rotating insertion sites when feasible, and individualizing dressing-change intervals based on skin integrity and exudate. Education and competency validation for staff are critical components of prevention programs.

Conclusion

Preventing catheter-related skin injury demands a comprehensive, patient-centered approach that integrates evidence-based device selection, meticulous skin care, and multidisciplinary collaboration. By understanding epidemiology, mechanisms, and risk factors, clinicians can implement targeted strategies to reduce incidence and severity of CRSI. Ongoing research and technological innovation continue to enhance prevention and management, with guideline-driven care serving as the cornerstone of improved patient safety and outcomes in hospitalized populations.