The net profit margin ratio is a profitability ratio. Essentially, it's the percentage of profit from business operations after you've deducted business operating expenses, interest expense, taxes and preferred stock dividends from revenues. Common stock dividends are the only major debit item left out of the equation.
Severe Allergic Reaction Facts. Anaphylaxis is a severe allergic reaction that occurs rapidly and causes a life-threatening response involving the whole body. This reaction can lead to difficulty breathing and shock ultimately leading to death. For an anaphylactic reaction to occur, you must have been exposed in the past to the substance that causes the reaction, called the antigen. A bee sting, for example, may not cause an allergic reaction the first time.
1 Common triggers of anaphylaxis include foods, certain medications, insect venoms and latex. 2  Anaphylaxis can cause breathing problems, hives, itching, a swollen throat and a drop in blood pressure. 3  Lack of nutrients in your diet.ome medical conditions can cause low blood pressure. These include: 1  Pregnancy. 2  Because a woman's circulatory system expands rapidly during pregnancy, blood pressure is likely to drop. 3  This is normal, and blood pressure usually returns to your pre-pregnancy level after you've given birth.