The purpose of this study was to evaluate the technical and animal experimental feasibility of a percutaneously implantable pulmonary arterial implant for permanent hemodynamic monitoring. Two systems for measuring pulmonary artery pressure (PAP) as well as pulmonary artery occlusion pressure (PAOP) were developed by modifying a commercially available pulmonary artery catheter (PAC). First, a cable-bound catheter-based system was designed by implementation of a capacitive absolute-pressure sensor in the catheter tip. This system was developed further into a completely implantable telemetric system. The devices were tested in an acute setting in a total of 10 sheep. The implant was placed with its tip in the descending pulmonary artery via the right jugular approach. Results were compared with conventional PAC positioned in the contralateral pulmonary artery using Pearson's correlation coefficients and Bland-Altman plots. Implantation of the monitoring systems was uneventful in 10 animals. Data from two fully functional cable-bound and telemetric pressure monitoring systems were available, with a total of 18,506 measurements. There was an excellent correlation between reference data and the data obtained with the implants (r = 0.9944). Bland-Altman plots indicated a very good agreement between the techniques. We report the development and successful initial test of an implantable catheter-based device for long-term measurement of PAP and PAOP. Both devices may be applicable for hemodynamic monitoring. Further long-term studies for assessing reliability and durability of the device are warranted.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1007/s00270-009-9556-0 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Off-pump versus on-pump coronary artery bypass grafting in patients with chronic obstructive pulmonary disease: a systematic review and meta-analysis.
Gen Thorac Cardiovasc Surg
January 2025
Department of Surgery & Cancer, Imperial College London, South Kensington, United Kingdom.
Introduction: Off-pump coronary artery bypass graft surgery (OPCAB) has been suggested as superior to on-pump coronary artery bypass graft surgery (ONCAB) in certain high-risk subgroups, but its benefit in patients with chronic obstructive pulmonary disease (COPD) remains controversial. This meta-analysis aimed to evaluate OPCAB versus ONCAB outcomes in COPD patients.
Methods: We followed PRISMA guidelines and searched PubMed, Embase, and the Cochrane Library in August 2024 for studies comparing OPCAB and ONCAB in COPD patients.
Cardiovascular Performance in Neonates with Hypoxic-Ischemic Encephalopathy Under Therapeutic Hypothermia: Evaluation by Conventional and Advanced Echocardiographic Techniques.
Pediatr Cardiol
January 2025
Echocardiography Laboratory, Instituto Dante Pazzanese de Cardiologia, São Paulo, Brazil.
This study aimed to evaluate the hemodynamic and ventricular performance of neonates with hypoxic-ischemic encephalopathy (HIE) undergoing therapeutic hypothermia using conventional and advanced echocardiographic techniques. This observational, prospective study included 22 neonates with HIE matched with 22 healthy neonates. Echocardiographic studies were performed 24 h after achieving target temperature during hypothermia and 24 h after rewarming.
View Article and Find Full Text PDFResults of ICE-Guided Isolation of the Superior Vena Cava With Pulsed Field Ablation.
JACC Clin Electrophysiol
January 2025
Texas Cardiac Arrhythmia Institute, St. David's Medical Center, Austin, Texas, USA; Interventional Electrophysiology, Scripps Clinic, San Diego, California, USA; Metro Health Medical Center, Case Western Reserve University School of Medicine, Cleveland, Ohio, USA; Department of Biomedicine and Prevention, Division of Cardiology, University of Tor Vergata, Rome, Italy. Electronic address:
Background: Earlier studies have documented the risk for sinoatrial node injury and phrenic nerve paralysis as complications following radiofrequency catheter ablation for electrical isolation of the superior vena cava (SVCI).
Objectives: The aim of this study was to assess the safety and feasibility of SVCI in patients with atrial fibrillation undergoing pulsed field ablation (PFA) METHODS: Six hundred sixteen consecutive patients undergoing PFA for pulmonary vein isolation plus SVCI were included in this multicenter analysis. Superior vena cava (SVC) ablation was performed under the continuous guidance of intracardiac echocardiography.
A nuanced scrutiny of the segmental renal artery spectral Doppler in "Pickering" the right diagnosis.
Future Cardiol
January 2025
Department of Cardiovascular Disease, Baylor Scott and White Medical Center - Temple, TX, USA.
Approximately 5-10% of patients with hypertension have secondary hypertension. We describe a case of secondary hypertension from bilateral renal artery stenosis (RAS): "Pickering syndrome." This is a case of hypertension secondary to bilateral RAS which provides an opportunity to review secondary hypertension with a specific focus on RAS, in terms of when to consider work up, causes of secondary hypertension, diagnostic testing, and treatment.
View Article and Find Full Text PDFTransesophageal echocardiography monitoring for liver transplantation: where are we now?
Minerva Anestesiol
January 2025
Transplant Anesthesia and Critical Care, Pisa NHS and University Hospitals, Pisa, Italy -
Intraoperative hemodynamic monitoring is crucial for managing patients with end-stage liver disease (ESLD) undergoing orthotopic liver transplantation (OLT) due to their complex cardiovascular and pulmonary abnormalities. Traditionally, pulmonary artery catheterization (PAC) has been the standard for hemodynamic monitoring during OLT. However, the use of transesophageal echocardiography (TEE) has increased due to its real-time visualization of cardiac and vascular structures, which aids in managing hemodynamic instability during the three surgical phases of OLT: pre-anhepatic, anhepatic, and neo-hepatic.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!