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Seldinger technique

The Seldinger technique is a percutaneous method for safely accessing blood vessels and other hollow organs by sequentially inserting a needle, guidewire, and catheter, allowing for the placement of larger catheters through a smaller initial puncture site to minimize trauma and complications. Developed by Swedish radiologist Sven-Ivar Seldinger in 1953, it revolutionized vascular interventions by replacing direct large-bore needle punctures with a more precise and flexible approach, initially designed for arteriography but now foundational to minimally invasive procedures across medicine.^[1] Seldinger introduced the technique in his paper "Catheter Replacement of the Needle in Percutaneous Arteriography," published in Acta Radiologica, addressing the limitations of prior methods that risked vessel damage, extravascular contrast injection, and restricted patient positioning. The procedure uses a thin-walled needle for initial vessel puncture, followed by insertion of a flexible guidewire (or "leader") beyond the puncture site, removal of the needle with pressure to control bleeding, and advancement of a catheter over the wire into the lumen, after which the wire is withdrawn. This innovation, inspired by earlier percutaneous attempts like those by Fariñas in 1941, enabled repeatable catheterization without surgical exposure, marking a pivotal shift toward therapeutic interventional radiology.^[1] Since its inception, the Seldinger technique has become integral to countless procedures, including diagnostic angiography, central venous and arterial catheterization, percutaneous nephrostomy, and endovascular therapies such as angioplasty and embolization. Its widespread adoption has facilitated the transition from open surgeries to less invasive options, reducing patient recovery times and complication rates, while modern modifications often incorporate ultrasound or fluoroscopic guidance for improved accuracy and safety. Seldinger's contribution earned him recognition as a founding father of interventional radiology, with the technique remaining a cornerstone of clinical practice over 70 years later.^[2]

Introduction

Definition and Purpose

The Seldinger technique is a minimally invasive medical procedure developed for safe percutaneous access to blood vessels and other hollow organs, involving an initial needle puncture followed by guidewire insertion to facilitate the placement of catheters or other devices.^[3] Introduced by Swedish radiologist Sven-Ivar Seldinger in 1953, it replaced earlier methods that required direct needle catheterization or surgical cutdown, thereby enabling more precise and less traumatic vascular entry.^[4] The technique's core innovation lies in using a flexible guidewire passed through the needle to guide subsequent instruments, allowing the needle to be removed without losing access to the vessel.^[5] The primary purpose of the Seldinger technique is to minimize tissue damage during vascular or cavity access by creating a controlled percutaneous tract over the guidewire, which reduces the risk of complications associated with larger initial incisions or punctures.^[5] This approach revolutionized diagnostic procedures such as angiography by providing a safer alternative to invasive techniques, facilitating the administration of contrast agents and other interventions with lower morbidity.^[3] By employing serial dilators if needed, the method expands the access site progressively, accommodating devices that would otherwise require a much larger entry point.^[5] A key advantage is its ability to insert catheters or sheaths with diameters significantly larger than the initial puncture needle, as the device advances along the guidewire rather than through the needle's lumen, thereby preserving vessel integrity and patient safety.^[3] This scalability has made the technique foundational for a wide range of endovascular and interventional applications since its inception.^[1]

Basic Principles

The Seldinger technique fundamentally relies on the anatomical properties of blood vessels, particularly their compressibility and elasticity, which enable effective hemostasis after percutaneous puncture. This allows manual compression at the access site to achieve immediate bleeding control, reducing the risk of hemorrhage compared to direct large-bore catheter insertion.^[6] At its mechanical core, the technique utilizes a flexible guidewire advanced through an initial needle puncture to establish and maintain a stable access path into the vessel lumen. The guidewire's flexibility prevents vessel collapse or dislodgement during the exchange of larger instruments, ensuring continuous luminal patency while minimizing endothelial disruption.^[7] A key concept is the coaxial progression of instruments, from a hollow needle for initial vessel entry, to guidewire placement, optional dilation of the access tract if required, and finally catheter advancement over the wire. This stepwise enlargement of the access tract distributes mechanical stress across the vessel wall, significantly reducing the incidence of trauma, dissection, or perforation associated with single-step large-diameter insertions.^[6] Puncture site selection is guided by vessel diameter, superficial accessibility, and patient-specific anatomy to optimize safety and procedural success. For instance, the common femoral vein offers a large-caliber, compressible target suitable for emergent access, while the internal jugular vein provides a straighter path to central circulation in anatomically favorable patients, with ultrasound confirmation ensuring adequate vessel size to accommodate the guidewire without risk of occlusion.^[6]

Historical Background

Invention by Sven Ivar Seldinger

Sven Ivar Seldinger (1921–1998) was a Swedish radiologist renowned for his contributions to interventional radiology. Born on April 19, 1921, in Mora, Dalarna, Sweden, he graduated from the Karolinska Institute in Stockholm in 1948 with an M.D. degree and began specializing in radiology shortly thereafter.^[8]^[9]^[10] Seldinger joined the radiology department at Karolinska Hospital, where he developed a keen interest in angiography techniques, eventually rising to faculty positions before serving as Radiologist-in-Chief at Mora Hospital from 1967 to 1986.^[9]^[10] His work focused on improving minimally invasive procedures, culminating in innovations that transformed vascular access methods.^[8] In 1953, while working at Karolinska Hospital, Seldinger invented a percutaneous catheter insertion method during efforts to enhance catheter angiography, specifically aiming to eliminate the need for surgical vessel cutdowns.^[9]^[10] The primary motivation stemmed from the high complication rates associated with direct needle catheterization for aortography, such as significant bleeding and vessel trauma caused by large-bore trocars and inflexible catheters, which limited the procedure to specialized centers and increased patient risk.^[11]^[10] Drawing inspiration from earlier attempts like those by Peirce in 1951, which suffered from dilution issues and bore-related inefficiencies per Poiseuille's law, Seldinger sought a safer approach using a guidewire to exchange needles for catheters without enlarging the puncture site.^[10]^[12] Seldinger first described the technique in his seminal 1953 paper, "Catheter replacement of the needle in percutaneous arteriography: a new technique," published in Acta Radiologica.^[13] The article detailed the method's application in angiographic procedures, demonstrating its feasibility for accessing major vessels like the femoral artery while reducing complications.^[13] This publication, presented initially at the 1952 Helsinki Congress, marked the foundation of modern interventional radiology by enabling precise, less invasive vascular interventions.^[9]^[8]

Evolution and Adoption

Following its invention in 1953 by Swedish radiologist Sven Ivar Seldinger, the technique was rapidly adopted in the 1950s and 1960s for percutaneous angiography, establishing it as a cornerstone of interventional radiology by enabling safer catheter insertion without direct vessel puncture.^[14] Refinements occurred primarily in Europe during the early 1960s, with widespread implementation in the United States by the mid-1960s, driven by its proven efficacy in diagnostic vascular imaging.^[14] A pivotal milestone came in the 1960s with the technique's integration into central venous catheterization, which enhanced vascular access safety in anesthesiology and critical care settings, evolving from earlier direct-needle methods to guidewire-assisted placement.^[6] By the 1970s, it supported emerging therapeutic applications, such as angioplasty pioneered by Charles T. Dotter in 1963 using Seldinger access for femoral artery dilation.^[14] Expansion to non-vascular uses accelerated in the 1980s, including percutaneous nephrostomy—first adapted in 1965 for urinary tract drainage but broadly implemented with fluoroscopic guidance for obstructive conditions.^[15] The Seldinger technique profoundly influenced related fields by facilitating endovascular surgery and percutaneous interventions, allowing minimally invasive alternatives to open procedures and shifting interventional radiology toward therapeutic paradigms.^[16] Its global dissemination occurred swiftly through peer-reviewed radiology journals and specialized training programs, achieving status as the predominant method for vascular access worldwide by the late 20th century.^[14]

Procedure

Step-by-Step Description

The Seldinger technique is performed under sterile conditions to minimize infection risk, beginning with the administration of local anesthesia at the access site, such as the femoral artery, followed by thorough skin preparation and draping.^[6] A small incision may be made to facilitate needle entry.^[17] The first procedural step involves puncturing the vessel with a hollow needle at an appropriate angle, typically advancing it until arterial or venous entry is confirmed by the flashback of blood into a connected syringe or the needle hub itself.^[1] This confirmation ensures proper intravascular positioning before proceeding.^[6] Once access is verified, a flexible guidewire with a rounded tip is carefully advanced through the needle lumen into the vessel lumen, often under fluoroscopic guidance to monitor its progress and position.^[1] Excessive force during guidewire advancement must be avoided to prevent vessel perforation, arrhythmia, or wire kinking.^[16] The needle is then withdrawn over the guidewire, which remains in place to maintain vascular access, while gentle manual compression is applied proximally to control any bleeding.^[1] If necessary for larger catheters or sheaths, the soft tissue tract may be serially dilated incrementally over the guidewire using tapered dilators to create a suitable pathway. Finally, the catheter or introducer sheath is threaded over the guidewire and advanced to the target location within the vessel, confirmed via fluoroscopy or contrast injection.^[1] The guidewire is removed, the device is secured in place, and hemostasis is achieved at the puncture site.^[6] Real-time fluoroscopic imaging is essential throughout to guide precise placement and verify positions, reducing procedural risks.^[16]

Required Equipment

The Seldinger technique requires a set of specialized instruments to ensure safe percutaneous access to vessels or cavities, with each component designed for compatibility and minimal trauma. The core entry tool is the Seldinger needle, a hollow, thin-walled puncture needle typically ranging from 18 to 21 gauge, which allows initial vessel penetration while accommodating subsequent guidewire passage; an 18- or 19-gauge size is standard for accommodating 0.035- to 0.038-inch guidewires in procedures involving 8F to 14F catheters.^[18]^[19] The guidewire serves as the foundational element for maintaining access, featuring a flexible J-tipped design with a diameter of 0.035 to 0.038 inches and a length typically ranging from 45 to 160 cm or longer, depending on the procedure and target site, to navigate tortuous paths without vessel injury; this configuration provides the necessary flexibility and atraumatic tip curvature, often with a 1.5- to 3-mm J-tip radius.^[18]^[20] Dilation tools, such as serial dilators or an introducer sheath, are essential for progressively expanding the puncture tract to accommodate larger devices, typically progressing in French (F) sizes to match the intended catheter without excessive force.^[19] The final access device is the catheter or sheath, usually 4 to 7 French for standard vascular applications, which must be fully compatible with the guidewire diameter to slide smoothly over it and secure positioning.^[18]^[19] Ancillary items include a 3- to 5-mL syringe for aspiration to confirm vessel entry via blood flashback, sterile drapes and towels for maintaining asepsis, local anesthetic such as 1% lidocaine (approximately 5 mL) administered via a 25- to 27-gauge needle for skin and subcutaneous infiltration, and hemostasis devices like nonabsorbable 3-0 or 4-0 sutures or manual compression tools to control bleeding post-procedure.^[19]^[21] Sizing considerations are critical, with guidewire and catheter diameters matched precisely (e.g., 0.035-inch wire for 5- to 7-French sheaths) to prevent kinking, buckling, or endothelial damage during advancement.^[18]

Clinical Applications

Vascular Access Procedures

The Seldinger technique is primarily employed in central venous catheterization to establish safe access to major veins such as the internal jugular, subclavian, and femoral veins, facilitating the administration of medications, hemodynamic monitoring, and hemodialysis.^[6] This percutaneous method involves needle puncture followed by guidewire insertion and catheter advancement, minimizing tissue trauma compared to direct venotomy.^[22] In critical care settings, it enables rapid placement of central lines for vasoactive drug delivery or fluid resuscitation, with success rates exceeding 90% when ultrasound guidance is integrated.^[23] Arterial applications of the Seldinger technique are widespread in interventional cardiology and vascular surgery, including percutaneous coronary interventions (PCI), peripheral angiography, and endovascular aneurysm repair (EVAR). For PCI, femoral or radial arterial access allows catheter delivery to coronary arteries for angioplasty or stenting, reducing procedural time and complications.^[24] In peripheral angiography, the technique visualizes arterial blockages in the limbs, guiding therapeutic interventions like thrombolysis.^[25] For EVAR, bilateral femoral access deploys stent-grafts to exclude abdominal aortic aneurysms, offering a minimally invasive alternative to open surgery.^[26] Specific examples highlight its versatility in vascular access. The insertion of Swan-Ganz catheters via the internal jugular or subclavian vein uses the Seldinger approach to measure pulmonary artery pressures and cardiac output in intensive care patients with heart failure or shock.^[27] Similarly, peripherally inserted central catheters (PICCs) are placed using a modified Seldinger technique through basilic or cephalic veins in the upper arm, providing long-term intravenous access for chemotherapy or parenteral nutrition while preserving larger veins for future use.^[28] In vascular settings, the Seldinger technique offers key advantages over surgical cutdown, including lower bleeding risk due to smaller puncture sites and faster patient recovery with reduced incision-related infections and scarring.^[29] These benefits contribute to shorter hospital stays and improved outcomes, particularly in high-risk patients undergoing repeated procedures.^[30]

Interventional Radiology Uses

The Seldinger technique forms the foundation of many image-guided procedures in interventional radiology, particularly for angiography, where it enables safe vascular access for diagnostic imaging. Originally developed for transfemoral aortography to visualize the aorta and its branches, the method revolutionized contrast delivery by allowing catheter exchange over a guidewire without repeated arterial punctures.^[31] Today, it is routinely applied in cerebral angiography, facilitating the selective catheterization of carotid and vertebral arteries for evaluating aneurysms, stenoses, and vascular malformations under fluoroscopic guidance.^[32] Similarly, peripheral angiography utilizes the technique for imaging lower extremity vessels, aiding in the diagnosis of occlusive disease and planning endovascular therapies.^[33] Beyond vascular applications, the Seldinger technique supports non-vascular interventions by providing wire-guided access to fluid collections and hollow organs. In percutaneous nephrostomy, a needle punctures the renal calyx under imaging, followed by guidewire insertion and catheter placement to decompress obstructed urinary systems.^[34] For biliary drainage, it allows transhepatic access to dilated ducts, enabling catheter insertion for relief of obstructive jaundice in cases of malignancy or stones.^[35] Abscess drainage employs the same principles, with needle aspiration confirming pus, followed by tract dilation and catheter deployment for therapeutic evacuation, often under CT or ultrasound guidance.^[17] Therapeutically, the technique underpins advanced interventions such as embolization and stent placement, performed via fluoroscopy to target specific pathologies. Embolization involves advancing microcatheters over guidewires to occlude abnormal vessels, as in treating uterine fibroids or arteriovenous malformations, using agents like coils or particles.^[36] Stent placement, common in biliary or vascular obstructions, relies on the Seldinger method for precise deployment to restore patency, such as in malignant strictures.^[37] Fluoroscopy-guided biopsies also leverage this access for sampling lesions in the lung, liver, or mediastinum, minimizing invasiveness through coaxial needle systems.^[38] The technique has expanded into collaborative specialties, enhancing urologic and gastroenterologic procedures. In urology, it facilitates ureteral stenting by percutaneous renal access, allowing wire traversal of obstructions for retrograde stent positioning.^[37] In gastroenterology, endoscopic rendezvous techniques integrate Seldinger principles, where percutaneous guidewire placement aids endoscopic navigation through strictures, as in complex pancreaticobiliary cases.^[39]

Variations and Modifications

Modified Seldinger Technique

The modified Seldinger technique represents an adaptation of the original Seldinger method, wherein a guidewire is passed through a needle or an integrated guiding sheath prior to dilation and catheter insertion, often utilizing a tear-away or peelable sheath to facilitate smoother exchange and reduce vessel trauma. This approach contrasts with the classical Seldinger technique, which involves puncturing the vessel with a hollow needle, advancing the guidewire through it, removing the needle, and then performing serial tract dilation before catheter placement. By incorporating a sheathed needle or direct wire insertion mechanism, the modified version streamlines the sequence, minimizing manipulation steps and potential endothelial damage. Key differences include the employment of a smaller introducer needle or sheath-over-needle system, which allows for more precise control and less invasive dilation, particularly suited to high-risk scenarios such as pediatric procedures or access in obese patients where anatomical challenges may complicate standard puncture. In pediatric applications, this modification enhances guidewire insertion success to approximately 95% and first-attempt catheterization rates to 83% in neonates, thereby reducing procedural time and risk in fragile vasculature. For obese individuals, the technique's reduced step count and targeted dilation aid in overcoming deeper tissue layers, as demonstrated in chemoport placements where it ensures safe access without excessive force. This technique finds common application in radial artery access during cardiac catheterization, where the modified approach can achieve high first-pass success while maintaining low bleeding risks comparable to the original method. It is also widely used for peritoneal dialysis catheter placement, offering procedural efficiency in creating secure peritoneal access. Evidence from clinical studies supports its benefits; for instance, a 2021 prospective study of 94 patients undergoing percutaneous peritoneal dialysis catheter insertion reported significantly lower rates of catheter migration (4.3% versus 18.2%) and dialysate leakage (0% versus 9.0%) with the modified technique compared to the conventional Seldinger method, alongside a high overall success rate of 97.9%. A concurrent meta-analysis further corroborated these findings for comparison with open surgery, indicating an odds ratio of 0.161 for reduced catheter migration risk (95% CI: 0.027–0.961), highlighting its efficacy in minimizing short-term postoperative issues without increasing other adverse events.^[40]^[41]

Ultrasound-Guided Approaches

The ultrasound-guided approach integrates real-time ultrasound imaging into the Seldinger technique to visualize target vessels during needle puncture, thereby minimizing blind insertions and enhancing procedural precision.^[42] This method employs a high-frequency linear transducer to provide dynamic guidance, allowing operators to confirm vessel patency, depth, and surrounding anatomy prior to and during access, which significantly reduces the risk of inadvertent arterial puncture or hematoma formation compared to traditional landmark-based methods.^[43] In practice, the technique utilizes either transverse (short-axis) or longitudinal (long-axis) probe orientations to optimize visualization. The transverse view facilitates initial vessel identification and centering of the puncture site but requires dynamic needle tip positioning to track the needle's trajectory and avoid posterior wall penetration, while the longitudinal view enables continuous in-plane imaging of the entire needle shaft, tip position, and subsequent guidewire advancement into the vessel lumen.^[21]^[43] Longitudinal approaches have demonstrated higher first-attempt success rates, such as 91.7% for axillary vein cannulation, by providing superior control over needle and wire placement, though transverse views may expedite the procedure in superficial vessels.^[44] This guidance yields substantial benefits, particularly in challenging scenarios, with first-pass success rates reaching up to 97.9% in ultrasound-guided arterial catheterization as reported in 2025 analyses of dynamic needle tip positioning techniques.^[45] It proves especially advantageous in emergency settings, where it shortens cannulation time (e.g., from 370 to 155 seconds for femoral veins) and lowers complication rates during resuscitation, and in pediatric patients, where vessel sizes are smaller (e.g., internal jugular vein averaging 5.5 mm in neonates), achieving success improvements of over 70% in peripheral intravenous access per meta-analyses of nearly 1,000 cases.^[43] Recent advancements include hybrid integration of color flow Doppler with B-mode ultrasound to confirm intraluminal needle position and blood flow direction, distinguishing arteries (pulsatile flow) from veins (phasic flow) and verifying wire advancement without fluoroscopy.^[43] Professional societies, such as the American Society of Echocardiography, have issued guidelines since the 2010s recommending routine ultrasound use (Grade 1A evidence) for central and peripheral vascular access to maximize safety and efficacy, particularly in high-risk populations.^[43]

Complications and Risks

Common Complications

The Seldinger technique, while effective for vascular access, carries an overall complication rate of 1-15%, with higher incidences in procedures performed without ultrasound guidance.^[46] Mechanical, vascular, and infectious complications predominate, varying by access site such as subclavian, internal jugular, or femoral veins.^[47] Vascular injuries represent a primary risk, often stemming from inadvertent arterial puncture during needle insertion, with reported incidences ranging from 1.6% to 8% across central venous catheterizations.^[48]^[49] This can lead to hematoma formation (incidence 1-6% in non-guided procedures), pseudoaneurysm development, or, in retroperitoneal access, severe hemorrhage requiring intervention.^[46]^[50] Infectious risks include bacteremia and catheter-related bloodstream infections, occurring in up to 5% of central line placements, particularly with prolonged dwell times or femoral site use (rates of 3.6-4.6 per 1000 catheter-days).^[48]^[47] These arise from skin flora contamination during insertion or biofilm formation on the catheter. Mechanical issues encompass guidewire embolism (rare, with embolization risk under 1% but potential fatality up to 20% if migration occurs), vessel perforation during advancement, and arrhythmias induced by guidewire contact with cardiac structures, such as right bundle branch block (incidence 0.5-1.5% in subclavian approaches).^[51]^[50] Thrombosis, including deep vein thrombosis (0.27% per catheter-day), may result from endothelial damage or catheter occlusion.^[48] Site-specific risks include pneumothorax (0.4-1.5% incidence, highest in subclavian access due to pleural proximity).^[47]^[48] In angiographic applications, allergic reactions to iodinated contrast media can occur (overall anaphylactoid reaction rate 0.6-3%), manifesting as urticaria or anaphylaxis.^[52]

Prevention and Management

Preventive measures for complications in the Seldinger technique emphasize strict adherence to sterile protocols, real-time ultrasound guidance, and careful patient selection to minimize risks such as infection, arterial puncture, and vascular injury.^[53] Strict sterile technique involves using antiseptic skin preparation, sterile drapes, and ultrasound probe covers with gel to maintain a sterile field throughout the procedure, significantly reducing infection rates.^[43] Real-time ultrasound guidance, recommended at Grade 1A for internal jugular vein access, improves first-pass success and lowers mechanical complication rates to as low as 7.7% by enabling precise vessel visualization and needle tip tracking.^[43] Proper patient selection includes assessing for contraindications such as active infection, trauma at the access site, or severe coagulopathy, which may increase bleeding risk; ultrasound-guided approaches can mitigate risks even in thrombocytopenic patients, but pre-procedure coagulation studies are essential.^[53]^[54] Monitoring protocols during and after Seldinger technique procedures incorporate continuous electrocardiography (ECG) to detect arrhythmias potentially induced by guidewire advancement, particularly in central venous access, alongside post-procedure site compression to achieve hemostasis and prevent hematoma formation.^[55] Standard five-lead ECG monitoring provides comprehensive rhythm assessment with a frequency response of 0.05 to 100 Hz, aiding early identification of complications like ectopy during wire insertion.^[56] For arterial punctures or minor bleeds, immediate external compression for 10-15 minutes is applied, while ultrasound is used to confirm guidewire position and monitor for thrombosis or pseudoaneurysm development.^[57]^[43] Management of adverse events requires prompt intervention tailored to the issue, such as immediate guidewire withdrawal and repositioning for malposition confirmed by ultrasound or fluoroscopy, to avoid embolization or further vascular damage.^[57] Infections are addressed by catheter removal and targeted antibiotic therapy, with incidence rates as low as 0.48% per catheter-day when sterile protocols are followed.^[57] Major bleeding or inadvertent arterial cannulation necessitates advanced interventions, including endovascular closure devices or open surgical repair if endovascular options fail, preventing severe outcomes like stroke or pseudoaneurysm.^[57] Training to reduce operator error is prioritized through simulation-based education, which allows safe practice of the Seldinger technique and has been shown to enhance procedural competence in interventional radiology.^[58] Guidelines from organizations like the Society of Interventional Radiology emphasize simulation for vascular access training to improve success rates and minimize complications.^[59] Adherence to these protocols has demonstrably improved outcomes, with multidisciplinary approaches in procedures like transcatheter aortic valve replacement reducing vascular complication rates from 11.7% in 2018 to 1.9% by mid-2025, representing an over 80% relative decrease through optimized ultrasound guidance and team education.^[60]

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Central Venous Access: An Update on Modern Techniques to Avoid ...
May 16, 2025 · The common complications for all insertion sites are catheter misplacement/failure, arterial puncture/cannulation, pneumothorax, catheter- ...
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comparison of the classic Seldinger technique and an ... - PubMed
We compared the Seldinger technique which implies manual localization of the vascular access, and an ultrasound guided technique, to assess whether the latter ...
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Guidewire Mishap: An Avoidable Iatrogenic Complication - PMC
Modified Seldinger technique has overall complication rate of 12%. Various complications reported include perforation of veins and hematoma formation ...
[48]
Guidewire-Related Complications during Central Venous Catheter ...
Sep 22, 2011 · Seldinger's technique is widely used to place central venous and arterial catheters and is generally considered safe.
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Ultrasound-Guided Intravenous Access - StatPearls - NCBI Bookshelf
Proper technique and skilled ultrasound use minimize complication risks. Overall complication rates reported in studies remain low. The failure rate of USGIV ...
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Contribution of Coagulopathy on the Risk of Bleeding After Central ...
Jan 21, 2022 · Coagulopathy was not associated with an increased bleeding risk in severely thrombocytopenic ICU patients undergoing ultrasound guided central venous catheter ...
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ECG monitoring leads and special leads - PMC - NIH
ECG monitoring is used in various situations starting from intensive coronary care units, critical care units, post operative wards and during surgical/ ...
[52]
Monitoring the Cardiac Surgical Patient | Anesthesia Key
Aug 19, 2016 · For cardiac anesthesia, a five-electrode surface ECG monitor should be used in the diagnostic mode, with a frequency response of 0.05 to 100 Hz.
[53]
Central Venous Access: An Update on Modern Techniques to Avoid ...
This article reviews the insertion, complications, and management associated with central venous access, with a particular focus on inadvertent arterial injury.Missing: percentage | Show results with:percentage
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Simulation-based training in radiology - PubMed
Jun 14, 2013 · Simulation-based training can allow novices to learn from their mistakes in a safe environment and in accordance with the principles of ...Missing: Seldinger | Show results with:Seldinger
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Quality Improvement Guidelines for Vascular Access and Closure ...
The clinical practice guidelines of the Society of Interventional Radiology attempt to define practice principles that generally should assist in producing ...
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Reducing TAVR Vascular Complications Through Multidisciplinary ...
Oct 7, 2025 · From 2018 to Q2 2025, complication rates decreased from 11.7% to 1.9%, procedure times improved from 77 to 49 minutes, and hospital stays ...