MmHg represents the height to which the pressure in the blood vessels can push a column of mercury in a manometer or sphygmomanometer, which are devices used to measure blood pressure. When a blood pressure reading is taken, two pressure levels are measured: systolic (the pressure during a hea...
Which is not one of the factors that determine blood pressure? (a) venous valves (b) cardiac output (c) resistance (d) blood volume What is the difference between systolic and diastolic blood pressure? What causes a decrease in BP in terms of resistance, pressure and blood flow?
Thereductionin blood volume during acute blood loss causes a fall in central venous pressure and cardiac filling. This leads to reduced cardiac output and arterial pressure. Does hemorrhaging lower blood pressure? Hemorrhagic hypotension leads to a well-characterized sequence of events including (i) a...
Most of the time, stomach cramps aren’t serious and don’t need to be diagnosed. If they happen often, are severe, or last for more than a day, this could be a sign of a more harmful medical problem, and you should see a doctor. Here are some common causes of stomach cramps: Fo...
Why does a pulmonary embolism cause low blood pressure? What causes fluid in the lungs with pneumonia? How does pulmonary hypertension cause dyspnea? What causes pulmonary edema after surgery? What causes pulmonary embolism in pregnancy? How does coronary artery disease cause heart failure?
Syncope ranges from not serious to a sign of a more serious condition that needs to be treated.What causes syncope?Syncope is caused by a decrease in blood flow to the brain. When blood flow to the brain decreases, oxygen to the brain also decreases. Any of the following conditions may ...
Walking 30 minutes a day C. Cutting down on salt and fat D. Losing temper constantlyThe best title for this passage is___ A. What is Stroke? B. Ten Causes of Stroke C. Stroke and Health D. How to Prevent Stroke. 相关知识点: 试题来源: 解析 46.A.细节理解题.文章第一段说...
a. it requires people to record and review the trouble later. b. it drives people to try and stay safe from anticipated trouble. c. it's referred to as negative ideas about things that will never happen. d. it...
What causes dizziness? While classifying dizziness into lightheadedness and vertigo categories may help understand how the body works, sometimes it is worthwhile to review common reasons why people might complain of dizziness. Low blood pressure as a cause of dizziness Dizziness, lightheadedness, and...
Blood clotsbigger than a plum Bleeding that soaks more than one sanitary pad an hour and doesn’t slow down or stop Blurredvision Chills Clammyskin Rapid heartbeat Dizziness Weakness Nausea Faintfeeling What Causes It? Certain things can raise your chance of postpartum hemorrhage. You’re at hi...