Deliberate Compensated Vasoplegia-A Novel Pharmaceutical Approach for Controlling Blood Pressure During Surgery for Pheochromocytoma.

Background: The most dreaded adverse event of pheochromocytoma surgery is operative severe blood pressure fluctuations. Preoperative protocols with alpha-blockade have achieved controversial results. No study to date evaluated the use of operative protocols in pheochromocytoma patients.

Enhanced Separation Performance of Hierarchically Porous Membranes Fabricated via the Combination of Crystallization Template and Foaming.

In this work, poly (vinylidene fluoride) (PVDF) hierarchically porous membranes (HPMs) with isolated large pores and continuous narrow nano-pores have been fabricated from its blend with poly (methyl methacrylate) (PMMA) based on the combination of crystallization template with chemical or supercritical CO foaming. On the one hand, the decomposition of azodicarbonamide (ADC, chemical foaming agent) or the release of CO can produce isolated large pores. On the other hand, PMMA is expelled during the isothermal crystallization of PVDF in their miscible blend, yielding narrow nano-pores upon etching with a selective solvent.

A Review on Removal and Destruction of Per- and Polyfluoroalkyl Substances (PFAS) by Novel Membranes.

Per- and Polyfluoroalkyl Substances (PFAS) are anthropogenic chemicals consisting of thousands of individual species. PFAS consists of a fully or partly fluorinated carbon-fluorine bond, which is hard to break and requires a high amount of energy (536 kJ/mole). Resulting from their unique hydrophobic/oleophobic nature and their chemical and mechanical stability, they are highly resistant to thermal, chemical, and biological degradation.

A Retrospective Investigation of Neuraxial Anesthesia Rates for Elective Cesarean Delivery Before and During the SARS-CoV-2 Pandemic.

Background: Our hospital used to perform cesarean delivery under general anesthesia rather than neuraxial anesthesia, mostly because of patient refusal of members of the conservative Bedouin society. According to recommendations implemented by the Israeli Obstetric Anesthesia Society, which were implemented due to the severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) pandemic, we increased the rate of neuraxial anesthesia among deliveries.

Objectives: To compare the rates of neuraxial anesthesia in our cesarean population before and during SARS-CoV-2 pandemic.

Sensing with Polarized LIDAR in Degraded Visibility Conditions Due to Fog and Low Clouds.

LIDAR (Light Detection and Ranging) sensors are one of the leading technologies that are widely considered for autonomous navigation. However, foggy and cloudy conditions might pose a serious problem for a wide adoption of their use. Polarization is a well-known mechanism often applied to improve sensors' performance in a dense atmosphere, but is still not commonly applied, to the best of our knowledge, in self-navigated devices.