Case report: Unusual cause of refractory hypoxemia after pacemaker lead extraction.

A 59-year-old woman with a history of a pacemaker implanted for III-degree atrioventricular block was admitted due to pocket infection. The atrial and ventricular leads were removed via the right femoral vein using a needle's eye snare. Hypoxemia was observed immediately after the removal of the lead.

The association between C-peptide and atrial cardiomyopathy in nondiabetic adults: results from NHANES III.

Serum C-peptide exhibits various biological activities. The relationship between C-peptide and atrial cardiomyopathy remains unknown. We aimed to investigate the association between C-peptide level and atrial cardiomyopathy in nondiabetic adults.

Initial Experience in Transvenous Implantation of a Left Ventricular Lead With a Novel Venogram Balloon Catheter.

Aim: The most challenging and time-consuming stage of cardiac resynchronization therapy (CRT) device implantation is coronary sinus (CS) cannulation and left ventricular epicardial electrode implantation. This paper reports the initial clinical experience of CS cannulation and left ventricular lead implantation guided by a novel venogram balloon catheter (Lee's venogram balloon catheter).

Methods And Results: Consecutive patients eligible for CRT were deemed suitable for this novel venogram balloon catheter.

The safety and efficiency of fluoroless site-specific transseptal puncture guided by three-dimensional intracardiac echocardiography.

Background: Although fluoroless transseptal puncture (TSP) guided by intracardiac echocardiography (ICE) has been used for many years, there are no reports of an accurate site-specific method for TSP in detail, especially about the safety and efficiency of the method. This study aimed to compare the efficacy and safety of TSP guided by three-dimensional ICE using a fluoroless site-specific method with that of the conventional fluoroless method in patients with atrial fibrillation (AF).

Methods: This prospective study included 60 patients with AF scheduled for radiofrequency ablation who were assigned to undergo modified fluoroless site-specific TSP (SS-ICE group, n = 30) or conventional fluoroless TSP (C-ICE group, n = 30).

[Thalamocortical Neural Mass Model Simulation and Study Based on Field Programmable Gate Array].

Using the computer to imitate the neural oscillations of the brain is of great significance for the analysis of brain functions.Thalamocortical neural mass model(TNMM)reflects the mechanisms of neural activities by establishing the relationships between the thalamus and the cortex,which contributes to the understanding of some specific cognitive functions of the brain and the neural oscillations of electroencephalogram(EEG)rhythms.With the increasing complexity and scale of neural mass model,the performance of conventional computer system can not achieve rapid and large-scale model simulation.

Preliminary study on the application of near infrared spectroscopy and pattern recognition methods to classify different types of apple samples.

In this paper, near infrared (NIR) spectroscopy combined with pattern recognition methods was used in an attempt to classify different types of apple samples. Three pattern recognition methods such as K-nearest neighbour (KNN), partial least-squares discriminant analysis (PLSDA) and moving window partial least-squares discriminant analysis (MWPLSDA) were used to classify apple samples of different geographical origins, grades and varieties. The result indicates that MWPLSDA is superior to these two conventional pattern recognition methods.