Quantitative analysis of CTA images was performed with dedicated software (Autoplaque version 2.0, Cedars-Sinai Medical Center) by an independent observer blinded to IVUS findings as previously described (details in Supplement ) [11 (link), 25 (link), 26 (link)]. Excellent intra-observer reproducibility and inter-observer reproducibility have been previously reported [25 (link), 27 (link)]. Plaque co-registration between CTA and IVUS was performed by another investigator, who was not involved in the other processing of CTA analysis. Stretched multiplanar reconstruction and cross-sectional CTA images were used to compare IVUS images. The proximal and distal reference limits of the plaque were matched to IVUS using anatomical landmarks, such as the distance from the aorto-coronary ostium, target lesions, side branches, or calcifications. Plaque volumes for total and each component were automatically quantified using scan-specific thresholds. The plaque composition was derived as (plaque component volume TPV) × 100 (%). For quantitative LDNCP analysis, the percentages of voxels below multiple LDNCP thresholds (30, 45, 60, 75, or 90 HU) within the plaque were calculated from CTA. CT attenuation of voxels located < 0.5 mm inward from the vessel boundaries was considered to be within the LDNCP threshold due to partial volume effects between the plaque and epicardial fat tissue; these voxels were excluded from the measurement of LDNCP in this study using standardized “erosion” from the vessel centerline. When there was a difference in lesion length between two modalities (possibly due to catheter-induced deformation of the coronary artery, cardiac motion, or pullback speed variations), volume parameters in CTA were corrected by the lesion length (volume parameters in CTA × the lesion length in IVUS the lesion length in CTA) [28 (link)]. An example of semi-automated TPV quantification from CTA is shown in Fig. 1 . TPV was also quantified using previously reported fixed HU thresholds (non-calcified plaque, < 150 HU; lumen, 150–500 HU; calcified plaque, > 500 HU) [29 (link), 30 (link)].
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Cardiac Catheters
Cardiac Catheters
Cardiac catheters are specialized medical devices used in the diagnosis and treatment of cardiovascular conditions.
These flexible, thin tubes are inserted into the heart or surrounding blood vessels, allowing healthcare providers to perform a variety of procedures, such as measuring blood pressure, taking samples, and delivering treatments.
Cardiac catheters play a crucial role in cardiac catheterization, a minimally invasive technique that provides valuable information about the heart's structure and function.
By leveraging advanced imaging technologies and real-time monitoring, cardiac catheters enable clinicians to make informed decisions and deliver tailored interventions, ultimately improving patient outcomes.
Thier precise positioning and careful handling are essential for ensuring safety and efficacy during cardiac procedures.
Reasearchers continue to innovate and enhance cardiac catheter design and applications to advance the field of cardiovascular care.
These flexible, thin tubes are inserted into the heart or surrounding blood vessels, allowing healthcare providers to perform a variety of procedures, such as measuring blood pressure, taking samples, and delivering treatments.
Cardiac catheters play a crucial role in cardiac catheterization, a minimally invasive technique that provides valuable information about the heart's structure and function.
By leveraging advanced imaging technologies and real-time monitoring, cardiac catheters enable clinicians to make informed decisions and deliver tailored interventions, ultimately improving patient outcomes.
Thier precise positioning and careful handling are essential for ensuring safety and efficacy during cardiac procedures.
Reasearchers continue to innovate and enhance cardiac catheter design and applications to advance the field of cardiovascular care.
Most cited protocols related to «Cardiac Catheters»
Anatomic Landmarks
Arteries
Artery, Coronary
Blood Vessel
Cardiac Catheters
Catheters
Dietary Supplements
Heart
Physiologic Calcification
Radionuclide Imaging
Reconstructive Surgical Procedures
Senile Plaques
Tissue, Adipose
Arteries
Cardiac Catheters
Cardiovascular System
Consciousness
Rattus norvegicus
Saline Solution
Transducers, Pressure
Atrial Fibrillation
Cardiac Catheters
Catheter Ablation
Cerebrovascular Accident
Cerebrovascular Disorders
Chronic Obstructive Airway Disease
Congestive Heart Failure
Dementia
Diabetes Mellitus
Diagnosis
Early Intervention (Education)
High Blood Pressures
Inpatient
Kidney Diseases
Malignant Neoplasms
Myocardial Ischemia
Nodes, Atrioventricular
Outpatients
Paroxysmal Supraventricular Tachycardia
Patients
Peripheral Vascular Diseases
Transient Ischemic Attack
Valve Disease, Heart
Adenovirus Infections
Anatomic Variation
Angiocardiography
Angiography
Animals
Arteries
Artery, Coronary
Balloon Occlusion
Blood Vessel
Cardiac Catheters
Catheterization
Catheterizations, Cardiac
Catheters
Coronary Circulation
Coronary Vessels
Diagnosis
Heart
Homo sapiens
Homozygote
Intubation
Myocardium
Nitroglycerin
Obstetric Delivery
Patients
Pharmaceutical Preparations
Safety
Sheep
Sus scrofa
Tissues
Virion
Anesthesia
Animals
Aorta
Aortic Pressure
Arteries
Asepsis
Atrium, Right
Blood Gas Analysis
Carbon dioxide
Cardiac Catheters
Catheters
Coronary Thrombosis
Dilatation
Electrocardiogram
Heart
Hemodynamics
Heparin
Hypothermia, Induced
Isoflurane
Jugular Vein
Ketamine
Operative Surgical Procedures
Oximetry
Perfusion
Pressure
Pressure, Diastolic
Respiratory Rate
Resuscitation
Sedatives
Sus scrofa
Thoracic Aorta
Thrombosis
Tidal Volume
Transducers
Most recents protocols related to «Cardiac Catheters»
The study used a case–control design to explore the relationships between DM SNPs and carotid atherosclerosis. The study performed stratified random sampling procedure to select study subjects from a community-based cohort, which enrolled middle-aged adults and elders from 3 townships in the northern coastal area of Taiwan [23 (link)]. From September 2010 to May 2013, a total of 1607 residents aged 40-to-74 years voluntarily provided informed consent and were enrolled. Twenty-seven subjects who lack good quality of recorded carotid ultrasound images and another 1 individual who lack blood pressure data were excluded. Another 40 subjects who had a positive history of physician-diagnosed myocardial infarction or had ever received a cardiac catheter or stent were excluded, leaving a total of 1539 subjects in the cohort.
Of the cohort members, 409 of them had detectable extracranial carotid plaques (CP). The study randomly selected 309 CP-positive individuals as the case group. The control group was a random sample of 439 individuals who had no detectable extracranial carotid plaque. The study complied with the 1975 Helsinki Declaration on ethics in medical research and were reviewed and approved by the institutional review boards of MacKay Medical College (No. P990001) and MacKay Memorial Hospital (No. 14MMHIS075).
Of the cohort members, 409 of them had detectable extracranial carotid plaques (CP). The study randomly selected 309 CP-positive individuals as the case group. The control group was a random sample of 439 individuals who had no detectable extracranial carotid plaque. The study complied with the 1975 Helsinki Declaration on ethics in medical research and were reviewed and approved by the institutional review boards of MacKay Medical College (No. P990001) and MacKay Memorial Hospital (No. 14MMHIS075).
Adult
Blood Pressure
Cardiac Catheters
Carotid Arteries
Carotid Atherosclerosis
Dental Plaque
elder flower
Ethics Committees, Research
Myocardial Infarction
Physicians
Senile Plaques
Single Nucleotide Polymorphism
Stents
Ultrasonography, Carotid Arteries
In this study, a total of 500 patients who underwent cardiovascular MRI imaging between 2015 November and 2018 December were retrospectively reviewed. Patient demographic data were obtained from the hospital information system. All the individuals had transthoracic two-dimensional echocardiography before the cardiovascular MRI examination. The echocardiography and cardiac catheter findings of the individuals were used only to determine the primary diagnosis and guide to the cardiovascular MRI.
All patients were evaluated for claustrophobia and the presence of contraindications, including MRI non-compatible implants, pacemakers, and excluded from the examination.
All patients were evaluated for claustrophobia and the presence of contraindications, including MRI non-compatible implants, pacemakers, and excluded from the examination.
2D Echocardiography
Cardiac Catheters
Cardiovascular System
Claustrophobia
Diagnosis
Echocardiography
Pacemaker, Artificial Cardiac
Patients
We decided to concentrate on devices used in operating theatres because of the high volume of high-risk devices in this setting. These devices are used in a complex but controlled environment by a number of experienced professionals. A large proportion of surgical devices/equipment belongs to class 3 and 4 (intermediate to high risk) as per the MHRA’s and European Commission’s classification system,21 for example, cardiovascular catheters, biological adhesives, vascular prosthesis and stents, etc.21 In addition, surgical teams have regular contact with technology and representatives from medical device companies for complex devices including training in use.
This study consists of three main steps as follows:
Pathway development occurred in a number of steps as shown infigure 1 . Following the literature review, the pathway to reporting and information transfer was developed. The design and derivation of a process pathway mapping follows five distinct steps, which include (1) organisation and process identification, (2) information gathering, (3) map generation, (4) process analysis and (5) taking improvement forward (figure 1 ).12 22
Different methods of pathway design are presented in the literature including hierarchical task analysis and sequential flow diagrams. A hierarchical task analysis approach to pathway mapping was followed as it allows for a greater granularity to be incorporated within the diagram.9 (link) The developed pathway was compared with the one published by NHS Improvement (figure 2 ).
The developed pathway was presented to and discussed with members of the National Institute for Health and Care Research- London In-Vitro Diagnostics Co-operative for comments and suggestions for improvement. Lucidchart software (Lucid Software) was used to design the diagrammatic representation of the pathway. The PPI group at Imperial College was consulted throughout this project.
The stakeholder interviews were also used to discuss methods for improvement.
Key principles of Lean Six Sigma were used as a comprehensive set of principles and tools that allow improvements in efficiency and effectiveness for organisation following pathway mapping.9 23 (link) These principles were adapted to healthcare as shown intable 1 .
A mixed-methods approach was used for participant recruitment. A mixture of convenience and snowball sampling methods was employed. All participants were consented prior to the start of the interviews, which were voice recorded. The survey had the consent incorporated at the start. An invitation email was sent to participants ahead of the interview containing the participant information sheet, what was required of them and the consent form for the study.
Thematic analysis of semistructured interview transcripts was carried out as guided by published literature24–26 (link) to ensure a rigorous process. Interviews were transcribed verbatim by the first author (AT), to increase familiarity with the data. The same methods were used for the analysis of the surveys. The interviews were reviewed by a second reviewer to minimise bias in data analysis (GH). The survey data consisted of free-text entry and multiple-choice answers. The questions on the survey were derived from the interview themes to gain further stakeholder feedback. The data gathered was thematically analysed and used together with the interview data to finalise the study results.
The interviews were used to gather data on (i) steps followed by clinical teams in reporting malfunctions or failures of medical devices in operating theatres, (ii) steps followed by manufacturers following a report to them and (iii) steps followed by the MDSO and MHRA following an event. The data gathered was used to develop the pathway to reporting and information transfer. The developed pathway was discussed with MHRA including identified points for improvement and updated accordingly. A list of points where improvements could be applied and suggestions for these improvement were collected from the stakeholders.
The five qualities for good interpretation as presented by Yin26 were used at the data interpretation stage. Standards for Reporting Qualitative Research27 (link) was used to structure and report the results of this study.
This study consists of three main steps as follows:
Pathway development occurred in a number of steps as shown in
Different methods of pathway design are presented in the literature including hierarchical task analysis and sequential flow diagrams. A hierarchical task analysis approach to pathway mapping was followed as it allows for a greater granularity to be incorporated within the diagram.9 (link) The developed pathway was compared with the one published by NHS Improvement (
The developed pathway was presented to and discussed with members of the National Institute for Health and Care Research- London In-Vitro Diagnostics Co-operative for comments and suggestions for improvement. Lucidchart software (Lucid Software) was used to design the diagrammatic representation of the pathway. The PPI group at Imperial College was consulted throughout this project.
The stakeholder interviews were also used to discuss methods for improvement.
Key principles of Lean Six Sigma were used as a comprehensive set of principles and tools that allow improvements in efficiency and effectiveness for organisation following pathway mapping.9 23 (link) These principles were adapted to healthcare as shown in
A mixed-methods approach was used for participant recruitment. A mixture of convenience and snowball sampling methods was employed. All participants were consented prior to the start of the interviews, which were voice recorded. The survey had the consent incorporated at the start. An invitation email was sent to participants ahead of the interview containing the participant information sheet, what was required of them and the consent form for the study.
Thematic analysis of semistructured interview transcripts was carried out as guided by published literature24–26 (link) to ensure a rigorous process. Interviews were transcribed verbatim by the first author (AT), to increase familiarity with the data. The same methods were used for the analysis of the surveys. The interviews were reviewed by a second reviewer to minimise bias in data analysis (GH). The survey data consisted of free-text entry and multiple-choice answers. The questions on the survey were derived from the interview themes to gain further stakeholder feedback. The data gathered was thematically analysed and used together with the interview data to finalise the study results.
The interviews were used to gather data on (i) steps followed by clinical teams in reporting malfunctions or failures of medical devices in operating theatres, (ii) steps followed by manufacturers following a report to them and (iii) steps followed by the MDSO and MHRA following an event. The data gathered was used to develop the pathway to reporting and information transfer. The developed pathway was discussed with MHRA including identified points for improvement and updated accordingly. A list of points where improvements could be applied and suggestions for these improvement were collected from the stakeholders.
The five qualities for good interpretation as presented by Yin26 were used at the data interpretation stage. Standards for Reporting Qualitative Research27 (link) was used to structure and report the results of this study.
Biopharmaceuticals
Blood Vessel Prosthesis
Cardiac Catheters
Cytoplasmic Granules
Diagnosis
Environment, Controlled
Europeans
Medical Devices
Muscle Rigidity
Operative Surgical Procedures
Stents
Surgical Equipment
Atrial fibrillation ablation was done using radiofrequency (Tacticath, Abbott Cardiovascular, Plymouth MN, USA) subsequent to electrophysiological mapping. The mapping catheter (HD grid, Abbott Cardiovascular, Plymouth MN, USA) and a coronary sinus catheter (Abbott Inquiry, Abbott Cardiovascular, Plymouth MN, USA) were inserted through femoral venous access. The mapping and the coronary sinus catheter were connected to the Abbott EnSite Precision cardiac mapping system (Abbott Cardiovascular, Plymouth MN, USA). After a stabilization period, the coronary sinus catheter was locked into position. This reference point was used to measure cardiac displacement during the study protocol. The coronary sinus catheter, together with the Abbott EnSite Precision system, is able to measure a minimum displacement of 0.34 mm [24 ,25 ].
The Abbott Inquiry catheter has multiple electrodes to measure its position. These electrodes are placed in a specific pattern: one electrode, 2 mm spacing, one electrode, 5 mm spacing, and this pattern is repeated five times. The electrodes can be seen inFigure 1 as black lines on the catheter. A region of interest, seen in blue in Figure 1 , is defined as a three-dimensional volume around the catheter, and the software measures all movement in any direction inside this volume. The software needs between 30 to 45 s to acquire a stable signal to make a correct measurement. We measured the maximum catheter displacement in any direction after this stabilization period. During mechanical ventilation, this represents the movement between the end-inspiratory and end-expiratory positions. During HFJV, there is only an oscillation of the catheter induced by the jet ventilation.
The primary endpoint was observed mobility, which was calculated as the displacement of the heart during conventional mechanical ventilation (IPPV) versus HFJV. This measurement was performed by the EnSite Precision™ cardiac mapping system connected to the Inquiry catheter placed in the coronary sinus before the start of the ablation procedure.
The secondary objectives were to assess the quality of ventilation by monitoring PaO2 and PaCO2 during HFJV.
The Abbott Inquiry catheter has multiple electrodes to measure its position. These electrodes are placed in a specific pattern: one electrode, 2 mm spacing, one electrode, 5 mm spacing, and this pattern is repeated five times. The electrodes can be seen in
The primary endpoint was observed mobility, which was calculated as the displacement of the heart during conventional mechanical ventilation (IPPV) versus HFJV. This measurement was performed by the EnSite Precision™ cardiac mapping system connected to the Inquiry catheter placed in the coronary sinus before the start of the ablation procedure.
The secondary objectives were to assess the quality of ventilation by monitoring PaO2 and PaCO2 during HFJV.
Atrial Fibrillation
Cardiac Catheters
Cardiovascular System
Catheters
Exhaling
Heart
Inhalation
Intermittent Positive-Pressure Ventilation
Mechanical Ventilation
Movement
Range of Motion, Articular
Sinus, Coronary
Sinuses, Nasal
Vein, Femoral
Vision
The selection of thrombus removal devices for this bench test was based on publications of case reports or case series [13 (link),14 (link),15 (link),16 ,17 (link),18 (link)] and the results of our stratified meta-analysis [19 (link)]. We tested the thrombus removal efficacy of three manual aspiration catheters and one stentriever. Their specifications are described in Table 1 .
The different diameters of the tested catheters were intended to reflect their deliverability to all segments of the anatomically tapering coronary vasculature. The manual thrombectomy devices are simpler to use than their motorized counterparts. Most of them are composed of monorail catheters with a central lumen, which is connected through one or more holes located at the tip. Manual suction is performed with a syringe. The Pronto V4 (Vascular Solutions, Minneapolis, MN, USA), Launcher (Medtronic, Minneapolis, MN, USA), CatchView (Balt, Montmercy, France) and Vasco+ (Balt) catheters were investigated in this study. According to the instructions, CatchView is used for flow restoration in patients with ischemic stroke caused by large intracranial vessel occlusion. It is unique in providing the possibility of the compression of the stentriever in the small vessels and its ability to expand by up to 6 mm in diameter. Vasco+ is a reinforced micro-catheter intended for the injection of diagnostic and therapeutic products or use with the self-expanding stents LEO+ or SILK+. It was designed to provide access and support in the treatment of intracranial aneurysms and mechanical thrombectomy. The Pronto V4 extraction catheter is intended for the removal of emboli or thrombi from the vessels in the coronary and peripheral vasculature. To quote the manufacturer, Pronto V4 has a uniformly large extraction lumen and patented self-centered Silva Tip. Launcher is one of the most commonly used coronary guide catheters. In a study by Hara et al., which included in vitro models for the comparison of the catheters’ efficacy, only aspiration catheters were compared [11 (link)]. In a study by Rioufol et al., a different guide catheter (Cordis, Santa Clara, CA, USA) was tested [20 (link)].
The different diameters of the tested catheters were intended to reflect their deliverability to all segments of the anatomically tapering coronary vasculature. The manual thrombectomy devices are simpler to use than their motorized counterparts. Most of them are composed of monorail catheters with a central lumen, which is connected through one or more holes located at the tip. Manual suction is performed with a syringe. The Pronto V4 (Vascular Solutions, Minneapolis, MN, USA), Launcher (Medtronic, Minneapolis, MN, USA), CatchView (Balt, Montmercy, France) and Vasco+ (Balt) catheters were investigated in this study. According to the instructions, CatchView is used for flow restoration in patients with ischemic stroke caused by large intracranial vessel occlusion. It is unique in providing the possibility of the compression of the stentriever in the small vessels and its ability to expand by up to 6 mm in diameter. Vasco+ is a reinforced micro-catheter intended for the injection of diagnostic and therapeutic products or use with the self-expanding stents LEO+ or SILK+. It was designed to provide access and support in the treatment of intracranial aneurysms and mechanical thrombectomy. The Pronto V4 extraction catheter is intended for the removal of emboli or thrombi from the vessels in the coronary and peripheral vasculature. To quote the manufacturer, Pronto V4 has a uniformly large extraction lumen and patented self-centered Silva Tip. Launcher is one of the most commonly used coronary guide catheters. In a study by Hara et al., which included in vitro models for the comparison of the catheters’ efficacy, only aspiration catheters were compared [11 (link)]. In a study by Rioufol et al., a different guide catheter (Cordis, Santa Clara, CA, USA) was tested [20 (link)].
Blood Vessel
Cardiac Catheters
Catheters
Dental Occlusion
Device Removal
Diagnosis
Heart
Intracranial Aneurysm
Medical Devices
Patients
Silk
Stents
Stroke, Ischemic
Suction Drainage
Syringes
Thrombectomy
Thrombus
Top products related to «Cardiac Catheters»
Nitroglycerin is a chemical compound that is commonly used in laboratory settings. It is a colorless, oily liquid with a sweet, fruity odor. Nitroglycerin has a molecular formula of C3H5N3O9 and a molar mass of 227.09 g/mol. The compound is known for its unstable and explosive nature, which requires careful handling and storage. Its primary function is as a chemical reagent in various laboratory experiments and analyses.
Sourced in Germany, United States, Japan
The SOMATOM Force is a high-performance computed tomography (CT) system developed by Siemens. It is designed to deliver fast, precise, and efficient imaging capabilities for a wide range of clinical applications. The SOMATOM Force features advanced technologies that enable high-quality imaging while minimizing radiation exposure.
Sourced in United States
Concanavalin A lectin is a protein isolated from the jack bean plant. It exhibits specific binding to carbohydrate structures, particularly those containing mannose and glucose residues. Concanavalin A can be used as a tool for the study of cell surface glycoproteins and for the separation and purification of glycoconjugates.
Sourced in United States, Australia
The 1.4F cardiac catheter is a medical device used for diagnostic and therapeutic procedures in the cardiovascular system. It is designed to be inserted into the blood vessels to access the heart and surrounding structures. The catheter's function is to provide a conduit for the introduction of various instruments, fluids, or medications during these procedures.
Sourced in Australia, United States
The Power Laboratory system is a comprehensive power analysis solution designed for laboratory environments. It provides precise measurement and analysis of electrical power parameters, including voltage, current, power, and energy. The system is equipped with high-accuracy data acquisition hardware and intuitive software for real-time monitoring and data logging.
Sourced in Germany, France, United States, United Kingdom, Canada, Italy, Brazil, Belgium, Cameroon, Switzerland, Spain, Australia, Ireland, Sweden, Portugal, Netherlands, Austria, Denmark, New Zealand
Rompun is a veterinary drug used as a sedative and analgesic for animals. It contains the active ingredient xylazine hydrochloride. Rompun is designed to induce a state of sedation and pain relief in animals during medical procedures or transportation.
Sourced in United States, Germany, Lithuania, United Kingdom, Canada, France, Japan, Israel, Australia, Spain, Switzerland, Sweden
RNAlater solution is a nucleic acid stabilization reagent that immediately stabilizes and protects RNA in fresh tissue samples. It preserves the RNA in tissues and cells, preventing degradation and allowing for reliable downstream analysis.
Sourced in United States
The AcuNav is a medical device designed for intravascular ultrasound imaging. It provides real-time, high-resolution images of cardiovascular structures to assist healthcare professionals in diagnostic and treatment procedures.
More about "Cardiac Catheters"
heart catheters, vascular catheters, cardiac catheterization, SOMATOM Force, Concanavalin A lectin, Rompun, 1.4F cardiac catheter, Power Laboratory system, nitroglycerin, RNAlater solution