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Central venous access is indicated in certain hospitalized patients. Common indications for central venous catheter placement include inadequate peripheral venous access, hemodynamic monitoring or central venous pressure recording, peripherally incompatible infusions due to the potency or irritant properties of administered medications, and the administration of various therapies, including dialysis. However, central venous access carries potential risks to the patient. Thus, institutional protocols must be followed to ensure a safe, successful placement. Moreover, bundles are in place for routine management to prevent catheter-associated complications. The most common complications include infection, thrombosis, and other mechanical difficulties. This activity aims to illustrate how to manage central venous catheters safely and highlights the interprofessional team's role in preventing catheter-associated complications. Objectives: Identify appropriate indications for central venous catheter insertion. Select appropriate equipment and use proper antiseptic techniques to prevent infections associated with central lines. Identify and manage the most common complications associated with central venous catheter placement and use. Strategize effective interprofessional team processes to improve care coordination and communication, thereby reducing central venous catheter-associated morbidity. Access free multiple choice questions on this topic.

Central venous access is a procedure commonly performed in hospitalized patients, but it carries inherent risks. Central venous catheters are placed for various reasons, including inadequate peripheral venous access, hemodynamic monitoring, infusion of medications incompatible with peripheral veins, and extracorporeal therapies.[1] The standard sterile placement and subsequent management of central venous access are ultimately aimed at preventing catheter-related skin-site or bloodstream infections, central line thrombosis, and mechanical complications. Many studies have been conducted to determine the best strategies for routine catheter maintenance, but institutional practices vary based on available resources.[2] However, the conceptual foundation for catheter maintenance is uniform and includes aseptic technique when handling catheters, as well as routine evaluation of the necessity of catheterization. These concepts are commonly implemented as intervention packages, more commonly known as bundles, that include mandatory checklists for the safe insertion of central venous catheters and catheter maintenance, as well as frequent educational opportunities to emphasize and achieve the standard of care.[3][4][5]

Central venous catheter–related complications span the procedural (insertion) phase and the post-placement period, with risk modulated by technique, anatomy, and patient comorbidity. During insertion, the absence of real-time ultrasound guidance is associated with higher complication rates, including multiple attempts and inadvertent cannulation of adjacent structures.[26] Arterial puncture remains one of the most consequential errors and can progress to expanding hematoma, pseudoaneurysm, arterial dissection, or arteriovenous fistula formation, with potential compression of nearby neurovascular structures.[27] Cardiac arrhythmias are also well described, typically resulting from guidewire or catheter-tip irritation within the right atrium or ventricle, or from excessive advancement and malpositioning.[28] Additional acute mechanical complications include pneumothorax and hemothorax (classically with subclavian access), air embolism, thoracic duct injury (left-sided access), and catheter malposition into aberrant venous structures, all of which underscore the importance of ultrasound guidance, anatomic familiarity, and postprocedural confirmation of tip location.

Central venous catheter–related complications span the procedural (insertion) phase and the post-placement period, with risk modulated by technique, anatomy, and patient comorbidity. During insertion, the absence of real-time ultrasound guidance is associated with higher complication rates, including multiple attempts and inadvertent cannulation of adjacent structures.[26] Arterial puncture remains one of the most consequential errors and can progress to expanding hematoma, pseudoaneurysm, arterial dissection, or arteriovenous fistula formation, with potential compression of nearby neurovascular structures.[27] Cardiac arrhythmias are also well described, typically resulting from guidewire or catheter-tip irritation within the right atrium or ventricle, or from excessive advancement and malpositioning.[28] Additional acute mechanical complications include pneumothorax and hemothorax (classically with subclavian access), air embolism, thoracic duct injury (left-sided access), and catheter malposition into aberrant venous structures, all of which underscore the importance of ultrasound guidance, anatomic familiarity, and postprocedural confirmation of tip location. Following placement, infectious complications are the most frequent and clinically significant. CRBSIs should be suspected in any patient with an indwelling line who develops fever, insertion-site erythema, swelling, purulence, leukocytosis, or hemodynamic instability. A comprehensive evaluation is required, and catheter removal should be strongly considered when infection is suspected or confirmed. Noninfectious late complications are also common. Catheter occlusion may result from malposition or migration, thrombotic occlusion, drug precipitation, or external mechanical factors; systematic inspection and troubleshooting are essential.[8] Catheter-associated thrombosis, most often in the upper extremities, can be clinically silent or present with limb swelling, dysfunction, or embolic phenomena; it may also serve as a nidus for infection or propagate if untreated.[29] Routine catheter removal is not universally indicated in cases of thrombosis; anticoagulation is the mainstay of therapy in appropriate patients.[30] Mechanistically, thrombosis may arise from fibrin sheath formation along the catheter surface or early intraluminal clot, with risk increased by prior catheterization, suboptimal tip position, catheter caliber, infusate characteristics, inadequate maintenance, and underlying malignancy. Mechanical occlusion can also occur from kinking, clamping, or external compression; if nonthrombotic causes are excluded and dysfunction persists, thrombolytic agents such as alteplase may be used. Preventive strategies include meticulous line care and routine flushing protocols. Intermittent locking with normal saline versus heparin shows minimal differences in efficacy, and flushing before and after medication administration is recommended to maintain patency.[30][31][32]

Effective central venous catheter use hinges on technical skill, standardized strategy, and disciplined interprofessional coordination. Physicians, nurse practitioners, and physician assistants are responsible for ultrasound-guided, sterile insertion, appropriate site selection, and confirmation of tip position, while anticipating patient-specific risks. Equally critical, maintenance and troubleshooting of central venous access are core competencies for all healthcare workers and must be performed routinely to prevent catheter-related infections and mechanical complications. Nursing staff leads day-to-day line care, including aseptic access, dressing changes, line flushing, and surveillance for early signs of infection, thrombosis, or dysfunction. Pharmacists optimize medication selection, compatibility, and infusion practices to reduce risks such as precipitation and catheter occlusion, and support antimicrobial stewardship when infection is suspected. A shared strategic emphasis on insertion and maintenance bundles (maximal barrier precautions, chlorhexidine antisepsis, standardized dressing protocols, and daily line necessity review) directly improves patient safety and outcomes. High-performing systems depend on structured communication and continuous care coordination across the team. Every healthcare team member is responsible for reassessing the ongoing need for central access and ensuring prompt removal when it is no longer indicated, recognizing that unnecessary catheter dwell time increases the risk of complications. Routine, multidisciplinary evaluation helps ensure proper handling and adherence to best practices, while standardized handoffs and daily rounds facilitate early recognition and escalation of complications. Multidisciplinary team training is essential to ensure reliable implementation of care bundles, and ongoing monitoring with feedback loops is required to identify gaps and drive quality improvement in patient care.[5][25] Coordinated responses, such as rapid evaluation of suspected catheter-related infection with input from nursing, physicians, infectious disease specialists, and pharmacists, enable timely diagnostics, targeted therapy, and appropriate decisions regarding catheter retention or removal. This integrated, team-based approach enhances patient-centered care, reduces morbidity, and strengthens overall team performance.