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Several clinical scoring systems have been derived to predict the arrhythmia outcome of catheter ablation (CA) for atrial fibrillation (AF) but which is better is not clear. Simple clinical risk scores (that any clinician can use in the everyday clinic) can help assess the likelihood of recurrence of AF following CA and the simple MB-LATER score has recently been described. We compare the predictive ability of seven existing clinical scoring systems (HATCH, CHADS , CHA DS -VASc, BASE-AF , APPLE, CAAP-AF, a...
The use of fluoroscopy in pediatric catheter ablation has decreased because of mapping systems. In this study, we present the efficiency and reliability of the electroanatomic mapping system in nonfluoroscopic pediatric catheter ablation.
A broken TIVAD catheter segment was discovered lodged within the right ventricle of a man presenting with chest pain. The catheter removal is detailed.
The guide extension catheter is frequently used in current percutaneous coronary intervention, and the GuideLiner (Vascular Solutions Inc., Minneapolis, MN) has been the standard guide extension catheter. Recently, the Guideplus (Nipro, Osaka, Japan) has emerged as a new guide extension catheter. The aim of the present study was to compare device performance between the Guideplus and GuideLiner.
Dialysis catheter associated infections (CAI) are a serious and costly burden on patients and the healthcare system. Many approaches to minimising catheter use and infection prophylaxis are available and the practice patterns in Australia and New Zealand are not known. We aimed to describe dialysis catheter management practices in dialysis units in Australia and New Zealand.
A multilumen access catheter (MAC) is a large-bore catheter that prevents kinking or collapsing. Misplacement is a frequently reported complication.
Central Venous Catheters (CVCs) represent a significant source of infection in patients undergoing hematopoietic stem cell transplantation and can add to the cost of care, morbidity, and mortality. Organisms forming biofilms on the inner surface of catheters require a much higher local antibiotic concentration to clear the pathogen growth. Antibiotic lock therapy (ALT) represents one such strategy to achieve such high intraluminal concentrations of antibiotics and can facilitate catheter salvage. Patients w...
Varan B, Yakut K, Harman A. Transcatheter retrieval of embolized catheter using venovenous loop in a neonate. Turk J Pediatr 2018; 60: 113-115. Umbilical venous catheters are reliable in providing adequate medical care for premature babies however complications include infections, bleeding, thrombosis, catheter occlusion and migration of a piece of catheter to other parts in the body. Here, we present a case with migration of a piece of umbilical venous catheter which has been trapped between hepatic vein a...
Evaluation of later morphologic alterations in renal artery wall and renal nerves in response to catheter-based renal denervation in sheep: comparison of the single-point and multiple-point ablation catheters.
This study evaluated the subacute morphologic alterations in renal artery wall and renal nerves in response to catheter-based renal denervation in sheep and also compared the efficiency of single-point and multiple-point ablation catheters. Effect of each ablation catheter approved for the clinical use (Symplicity Flex(TM), Medtronic, INC. or EnligHTN(TM), St. Jude Medical, INC.) was compared to intact contralateral renal artery in 12 sheep by histopathology and immunohistochemistry evaluation after a 10-da...
Detailed substrate mapping is important for catheter ablation. However, the influence of the electrode spacing of the mapping catheter on the substrate map has not been well clarified. The aim of this study was to investigate the influence of the electrode spacing of the mapping catheter on the voltage of the substrate map.
In most situations, central catheters are implanted in the right jugular vein as initial access for hemodialysis. However, after repeated punctures, the proximal vessels become stenosed and thrombosed and misplacement is likely to occur. Correct catheter position in the vein can be easily ascertained with X-ray or cross-sectional CT imaging. In this report, we describe the case of a 77-year-old patient on chronic hemodialysis via catheter due to arteriovenous fistula dysfunction. We placed a cuffed-tunneled...
Jeremy Swan and William Ganz developed their eponymous pulmonary artery (PA) catheter in the 1970s and, in the process, revolutionized measurement of cardiac output, pressures within the left side of the heart, and resistance in systemic and pulmonary circulations. Their invention enabled diagnostic measurements at the bedside and contributed to the birth of critical care medicine; technologic advances preceding the PA catheter generally could not be used at the bedside and required patients to be stable en...
Central venous catheter use is common among patients undergoing haemodialysis. Catheter related vascular thrombosis is a frequent complication, which results in catheter dysfunction. This may eliminate the affected vein as a potential route of vascular access and leads to significant morbidity of the limbs involved. Despite increasing prevalence, there is a dearth of evidence-based guidelines for managing such catheter related thrombi, often leading to treatment dilemmas in clinical practice. Minimizing the...
Multiple markers LA remodeling, including LA shape, correlate with outcomes in AF. Catheter ablation is an important treatment of AF, but better tools are needed to determine which patients will benefit. In this study we use particle based modeling to quantitatively assess LA shape, and determine to what degree it predicts AF recurrence after catheter ablation.
Umbilical catheters are commonly used in the neonatal period for blood sampling or for administering medication or parenteral nutrition. The position of the catheter is usually confirmed with radiography. However, many complications associated with the use of umbilical catheters, such as liver collections from extravasation or vascular thrombosis, are not apparent on radiographs but can be easily diagnosed with ultrasound. This pictorial review illustrates the sonographic findings of complications that shou...
Establishing vascular access is a common neonatal intensive care unit procedure. The extended dwell peripheral intravenous (EPIV) catheter is a 6-cm and 8-cm silicone catheter for peripheral vein insertion, which is a newer vascular access device than peripherally inserted central catheters (PICCs) and peripheral intravenous (PIV) catheter. Extended dwell peripheral intravenous catheters have been widely used in adults but evidence in neonates is lacking.
Both the morphological anatomy and functional parameters such as flow speed of the artery provide valuable information for the evaluation of cardiovascular diseases. Direct measurement of the arterial wall can be achieved by intravascular optical/ultrasound imaging methods, however no functional data are acquired with these methods. Fractional flow reserve (FFR) and Doppler wire have been used to assess the blood flow information, but do not provide cross-sectional images of the artery. This study is the fi...
Successful catheter ablation is limited by both poor spatial resolution of abnormal local signals and inability to deliver an effective lesion due to poor tissue contact. We report first worldwide use of the Intellanav MiFi OI catheter (Boston Scientific), providing ultra-high density mapping and incorporating a 'DirectSense' algorithm to measure local tissue impedance (LI).
The aim of this research was to evaluate the efficiency and effectiveness of an orthodontic treatment with clear-aligner systems, specifically with Invisalign®. In addition to a review of the literature, 4 orthodontists and 9 patients treated with fixed orthodontic therapy and Invisalign® were interviewed. The literature showed that it is difficult to correct an extrusion, rotation or overjet with clear aligners. Often 'refinement' (additional intervention during treatment) is necessary to achieve the bes...
Ventriculoperitoneal (VP) shunt is the most common neurosurgical procedure to treat obstructive and communicating hydrocephalus, but failures are frequent. The most common causes of shunt failure are malpositioning and obstruction of the ventricular catheter by debris or blood clothes. The knowledge of the relationship between ventricular catheter tip position, etiology of hydrocephalus and patient's age with shunt malfunction may be useful to avoid shunt failure.
Freehand ventricular catheter placement has been reported to have poor accuracy.
Accidental placement of Foley catheter in ureter is a rare phenomenon. It is more common in females with neurogenic bladder who have hypocontractile bladder or there can be iatrogenic placement during surgical procedures. We describe a case of a female suffering from upper motor neuronal lesion due to trauma at T8 level (American Spinal Injury grade A) following which she developed neurogenic bladder. A Foley catheter was unintentionally placed in the ureter and subsequently removed through a novel techniqu...
Air embolisms are serious complications during catheter ablation procedures.
Implanted intrathecal drug delivery systems (IDDS) are increasingly used in the treatment of spasticity and in patients with refractory pain. Literature discussing complications associated with intrathecal pump placement is widely available. However, reports of complications following the removal of chronically placed catheters are scarce. We reviewed our series of patients who had surgery to remove the intrathecal catheter.
Indwelling urinary catheters (IUCs) are commonly used devices in acute care that may lead to catheter-associated urinary tract infections or noninfectious complications. Responsibilities for IUC are usually shared between nurses and physicians, and a common mental model among the two professional groups is thus essential for a successful reduction in catheter use. The aim of this study was to determine variation in the perceptions of current practices and culture regarding IUC use between these two groups.