Digital Encyclopedia

**** Relevant Background: “ Arterial blood pressure  is most commonly measured via a  sphygmomanometer , which historically used the height of a column of mercury to reflect the circulating pressure. [1] Blood pressure values are generally reported in  millimetres of mercury  (mmHg), though  aneroid  and electronic devices do not contain  mercury .… For each heartbeat, blood pressure varies between   systolic   and   diastolic   pressures. Systolic pressure is peak pressure in the arteries, which occurs near the end of the   cardiac cycle   when the   ventricles   are contracting. Diastolic pressure is minimum pressure in the arteries, which occurs near the beginning of the cardiac cycle when the ventricles are filled with blood. An example of normal measured values for a resting, healthy adult human is 120 mmHg   systolic   and 80 mmHg   diastolic   (written as 120/80 mmHg, and...

****  Relevant Background:   【Portable Folding Size】Innovative folding design, folding size is just 12.4*11.8*4.3 inches, and compact size saves space for your outdoor backpack. We provide storage bags, which can be easily put into cars, suitcases and backpacks! 【Multifunction】Our camping toilets can be used outdoors, trucks, hiking, long-distance trips, boating and camping, and can freely switch between various use modes, such as storage boxes, trash cans, folding chairs and indoor toilets. 【Easy to use and clean】This camping toilet can be easily installed and folded in seconds. Super simple and fast. Our portable camping toilets are easier to clean, making it easy for you to do business on the road. Please put on the attached plastic garbage bag before use to keep the toilet clean and tidy. 【More stable】Square folding toilet has a more stable center of gravity compared with round folding toilet, which can adapt to various uneven terrain outdoors and is not easy to fall down....