Evaluation of near-infrared spectroscopy under apnea-dependent hypoxia in humans.

In this study we investigated the responsiveness of near-infrared spectroscopy (NIRS) recordings measuring regional cerebral tissue oxygenation (rSO2) during hypoxia in apneic divers. The goal was to mimic dynamic hypoxia as present during cardiopulmonary resuscitation, laryngospasm, airway obstruction, or the "cannot ventilate cannot intubate" situation. Ten experienced apneic divers performed maximal breath hold maneuvers under dry conditions.

Monitoring of cerebral oxygen saturation during resuscitation in out-of-hospital cardiac arrest: a feasibility study in a physician staffed emergency medical system.

Background: Despite recent advances in resuscitation algorithms, neurological injury after cardiac arrest due to cerebral ischemia and reperfusion is one of the reasons for poor neurological outcome. There is currently no adequate means of measuring cerebral perfusion during cardiac arrest. It was the aim of this study to investigate the feasibility of measuring near infrared spectroscopy (NIRS) as a potential surrogate parameter for cerebral perfusion in patients with out-of-hospital resuscitations in a physician-staffed emergency medical service.

Safety, feasibility and complications during resective pediatric epilepsy surgery: a retrospective analysis.

Background: Resective epilepsy surgery is an established and effective method to reduce seizure burden in drug-resistant epilepsy. It was the objective of this study to assess intraoperative blood loss, transfusion requirements and the degree of hypothermia of pediatric epilepsy surgery in our center.

Methods: Patients were identified by our epilepsy surgery database, and data were collected via retrospective chart review over the past 25 years.

The basal temporal approach for mesial temporal surgery: sparing the Meyer loop with navigated diffusion tensor tractography.

Background: Visual field defects are a common side effect after mesial temporal resections such as selective amygdalohippocampectomy (SelAH).

Objective: To present a method of diffusion tensor tractography (DTT) of the Meyer loop for preoperative planning of the surgical approach for SelAH and for intraoperative visualization on a navigation-guided operating microscope.

Methods: Twelve patients were selected for SelAH to treat mesial temporal lobe epilepsy.