Publications by authors named "Ryan Mathern"

: COVID-19 has affected many people all around the world for more than two years now have suffered many long-term consequences which is commonly referred to as long-haulers. Despite multiorgan complaints in long haulers, symptoms related to cognitive functions commonly referred as brain fog are seen in the high risk covid patients with age more than 50, women more than men, obesity, asthma and those who experienced more than five symptoms during the first week of covid illness. Long term isolation has certainly contributed to high level of anxiety and stress calling for an empathetic response to this group of covid patients as there is no specific test to detect long haulers and no specific cognitive rehabilitation techniques available as of today.

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A sixty-three year-old male who arrived to our emergency department with signs and symptoms of an acute left middle cerebral artery cerebrovascular accident. Initial neurovascular imaging failed to demonstrate any abnormalities that explained his symptoms. His neurologic status rapidly deteriorated in conjunction with the development of severe sepsis.

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Purpose: The ability to generate quick submaximal muscle forces followed by quick relaxations is essential for various athletic and daily tasks. While force generation has been studied extensively, the studies of force relaxation are scarce. Therefore, we aimed to develop the rate of force relaxation scaling factor (RFR-SF) as a kinetic variable to assess the ability to relax submaximal muscle forces quickly.

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Article Synopsis
  • The paper outlines the creation of four affordable biomedical devices (blood pressure monitor, thermometer, weighing scale, and spirometer) specifically designed for the East African context, focusing on a mass-production price of $10 and durability in harsh conditions.
  • The blood pressure monitor, thermometer, and weighing scale showed a 6% error margin compared to commercial devices and performed well in field tests in Kenya, while suggesting the spirometer requires redesign for better usability.
  • The article emphasizes the potential for developing effective biomedical devices in resource-limited settings, proposing further improvements for easier manufacturing, standardized materials, field calibration, and enhanced user software.
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