Measuring Width. 1  1. Move the refrigerator. To get many of the right measurements, you should move the refrigerator to allow access to the space. 2  2. Measure the space of the opening. It might be tempting to measure the size of your current refrigerator. 3  3. Use a retractable measuring tape. Place one end against the wall.  4. Repeat the measurement.
Blood pressure varies from one person to another. A drop as little as 20 mmHg, can cause problems for some people. There are different types and causes of low blood pressure. Severe hypotension can be caused by sudden loss of blood (shock), severe infection, heart attack, or severe allergic reaction (anaphylaxis).Orthostatic hypotension is caused by a sudden change in body position. drop as little as 20 mmHg, can cause problems for some people. There are different types and causes of low blood pressure. Severe hypotension can be caused by sudden loss of blood (shock), severe infection, heart attack, or severe allergic reaction (anaphylaxis).
If dizziness and lightheadedness are experienced rising in the morning or when changing from a lying to upright position, postural orthostatic hypotension may be the cause. This is a problem of low blood pressure, producing poor circulation of blood through the body.