Intraparenchymal near-infrared spectroscopy for detection of delayed cerebral ischemia in poor-grade aneurysmal subarachnoid hemorrhage.

Objective: Detection of delayed cerebral ischemia (DCI) is challenging in comatose patients with poor-grade aneurysmal subarachnoid hemorrhage (aSAH). Brain tissue oxygen pressure (PbtO2) monitoring may allow early detection of its occurrence. Recently, a probe for combined measurement of intracranial pressure (ICP) and intraparenchymal near-infrared spectroscopy (NIRS) has become available.

Evaluation of machine learning algorithms for noninvasive intracranial pressure estimation using near infrared spectroscopy as a covariate.

Background: Intracranial pressure (ICP) is a vital parameter that is continuously monitored in patients with severe brain injury and imminent intracranial hypertension.

Objective: To estimate intracranial pressure without intracranial probes based on transcutaneous near infrared spectroscopy (NIRS).

Methods: We developed machine learning based approaches for noninvasive intracranial pressure (ICP) estimation using signals from transcutaneous near infrared spectroscopy (NIRS) as well as other cardiovascular and artificial ventilation parameters.

Complex endovascular retrieval of an intravascular foreign body.

We report a case of a 54-year-old man who developed bilateral multifocal pneumonia as a result of septic thromboembolization from an ingested ballpoint pen that migrated through the gastrointestinal system and lodged in the inferior vena cava. The ballpoint pen was removed from the inferior vena cava with a complex endovascular approach using internal jugular and common femoral vein access with the combination of a snare device and atraumatic laparoscopic grasper. He was also found to have a duodenal perforation requiring primary repair in a staged fashion after endovascular removal of the ballpoint pen.

Sensitivity and specificity analysis of fringing-field dielectric spectroscopy applied to a multi-layer system modelling the human skin.

The sensitivity and specificity of dielectric spectroscopy for the detection of dielectric changes inside a multi-layered structure is investigated. We focus on providing a base for sensing physiological changes in the human skin, i.e.

A human body model for efficient numerical characterization of UWB signal propagation in wireless body area networks.

Wireless body area network (WBAN) is a new enabling system with promising applications in areas such as remote health monitoring and interpersonal communication. Reliable and optimum design of a WBAN system relies on a good understanding and in-depth studies of the wave propagation around a human body. However, the human body is a very complex structure and is computationally demanding to model.

The safety and effectiveness of the retrievable option inferior vena cava filter: a United States prospective multicenter clinical study.

Purpose: To evaluate the safety and effectiveness of the retrievable Option inferior vena cava (IVC) filter in patients at risk for pulmonary embolism (PE).

Materials And Methods: This was a prospective, multicenter, single-arm clinical trial. Subjects (N = 100) underwent implantation of the IVC filter and were followed for 180 days; subjects whose filters were later removed were followed for 30 days thereafter.