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2. Orthopedic pillow - Wikipedia

   en.wikipedia.org/wiki/Orthopedic_pillow

   A travel pillow An ergonomic pillow. An orthopedic pillow is a pillow designed to correct body positioning in bed or while lying on any other surface. Its design conforms to orthopedic guidelines to ensure the right placement and support of one or more specific parts of the body to provide safe and healthy rest to the sleeper.

3. Instruments used in general medicine - Wikipedia

   en.wikipedia.org/wiki/Instruments_used_in...

   Measuring tape: for length, height, head circumference and girth measurements Medical halogen penlight: to see into the eye, natural orifices, etc. and to test for pupillary light reflex, etc. Medical ultrasound: to create an image of internal body structures Nasogastric tube: for nasogastric suction or the introduction of food or drugs into ...

4. Respiratory pressure meter - Wikipedia

   en.wikipedia.org/wiki/Respiratory_pressure_meter

   Measuring respiratory muscle strength is a long-established method of assessing the mechanics of breathing. Respiratory muscle dysfunction (i.e., reduced strength or endurance) should be distinguished from lung function abnormalities and measured separately.

5. Plethysmograph - Wikipedia

   en.wikipedia.org/wiki/Plethysmograph

   A plethysmograph is an instrument for measuring changes in volume within an organ or whole body (usually resulting from fluctuations in the amount of blood or air it contains). The word is derived from the Greek "plethysmos" (increasing, enlarging, becoming full), and "graphein" (to write). [1]

6. Positive airway pressure - Wikipedia

   en.wikipedia.org/wiki/Positive_airway_pressure

   Positive airway pressure (PAP) is a mode of respiratory ventilation used in the treatment of sleep apnea.PAP ventilation is also commonly used for those who are critically ill in hospital with respiratory failure, in newborn infants (), and for the prevention and treatment of atelectasis in patients with difficulty taking deep breaths.

7. Scientists Finally Solved the Mystery of How the Mayan ...

   www.aol.com/lifestyle/scientists-finally-solved...

   Scholars show how multiple planet movements tie into the 819-day Mayan calendar. The 819 days of the calendar must be viewed across a 45-year time period to fully understand.