Fully automated template matching method for ECG-free heartbeat detection in cardiomechanical signals of healthy and pathological subjects.

Cardiomechanical monitoring techniques record cardiac vibrations on the chest via lightweight electrodeless sensors that allow long-term patient monitoring. Heartbeat detection in cardiomechanical signals is generally achieved by leveraging a simultaneous electrocardiography (ECG) signal to provide a reliable heartbeats localization, which however strongly limits long-term monitoring. A heartbeats localization method based on template matching has demonstrated very high performance in several cardiomechanical signals, with no need for a concurrent ECG recording.

The Influence of Alkaline Earth Metal Cations on the Performance of Platinum Electrodes during Brine Electrolysis.

The performance of platinum electrodes towards the hydrogen evolution reaction (HER) during pH neutral brine electrolysis was investigated in the presence of alkaline earth metal divalent cations, with focus on Mg2+ ions. This study aimed to understand the impact of these cations and/or their hydroxide deposits on electrode performance. Electrochemical measurements were conducted in electrolytes with varying Mg2+ concentrations (0 mM to 55 mM) in 1 M Na2SO4 solution.

Long-term results of Late Open Conversions with Partial or Total Removal of Non-Infected Stent Grafts after Failed Endovascular Aneurysm Repair.

Objective: Open surgical conversion after failed EVAR has become more common. Our aim was to compare the short- and long-term results of late open conversions for non-infectious indications with partial or total stent graft removal.

Methods: Our study is a retrospective, multicentre observational study of late open conversions performed in five hospitals between January 1997 and June 2024.

Electrosurgical In Situ Fenestration of Aortic Endograft.

Purpose: Endovascular interventions have become the primary choice for treating complex aortic pathologies, particularly with the use of fenestrated and branched endografts. However, limitations, such as manufacturing time have restricted their applicability in urgent situations. This has led to explore alternative off-the-shelf solutions, including in situ fenestration.

Accuracy of the Instantaneous Breathing and Heart Rates Estimated by Smartphone Inertial Units.

Seismocardiography (SCG) and Gyrocardiography (GCG) use lightweight, miniaturized accelerometers and gyroscopes to record, respectively, cardiac-induced linear accelerations and angular velocities of the chest wall. These inertial sensors are also sensitive to thoracic movements with respiration, which cause baseline wanderings in SCG and GCG signals. Nowadays, accelerometers and gyroscopes are widely integrated into smartphones, thus increasing the potential of SCG and GCG as cardiorespiratory monitoring tools.