学医的须牢记（Keep in mind what you need to learn medicine）.doc

学医的须牢记（Keep in mind what you need to learn medicine） Nocturia increases also may be male prostate hyperplasia, senile female prolapse, urinary system infection, diabetes, mental stress and other reasons. 8. urine red cell count (RBC) normal value: 0-3 / high-power visual field Urine red cell 3 / high-power visual field, called microscopic hematuria. Urine red blood cell 10 / high field of vision, called macroscopic hematuria. Popular medicine reminder: the urine red blood cell count if more than 3, is suggestive of kidney lesions or urinary system infection, should seek medical treatment immediately women should avoid urinalysis in the menstrual period, menstrual blood mixed with urine so as not to affect the blood test results. 9. white blood cell count (WBC) normal value: 5 / HPF If a white blood cell count 5 / HPF, called microscopic pyuria. If there is a large number of white blood cells in the urine, most of them are urinary tract infections, such as pyelonephritis, kidney tuberculosis, cystitis or urinary tract infection. Most of them are urinary tract infections, 10. sperm survival time: 72 hours. Egg survival time: 24 hours. Safe period safe period safe encounter trouble, in addition to the ovulation mistake outside, there is a factor that can not be ignored is that because sperm can survive for 3 days in the female body, so even if the day is not the day of ovulation, as long as in the period of pregnancy (2 days before ovulation 4 days after ovulation, women still) it is possible to conceive. 11., two large blood group systems: ABO and Rh The ABO blood group system divides the blood into 4 types: A, B, AB, and O. The Rh blood group system divides blood types into two types: Rh positive and Rh negative. Of Caucasians, 85% were Rh positive, and 15% were Rh negative. In our country, 99% of people belong to Rh positive blood group, and Rh negative belongs to rare blood type. A-A:A, O, A-B:A, B, O, AB, A-AB:A, B, AB, A-O:A, O B-B:B, O, B-AB:A, B, AB, B-O:B,