1, the elderly should not eat high-sugar food for two days after blood sugar check.
High-sugar food can stimulate the increase of insulin level in human body, and make the metabolism of heat energy, protein, fat and carbohydrate disorder, which can lead to the decrease of glucose tolerance and the increase of blood sugar. Especially in the elderly, the blood sugar regulation function is declining. Eating high-sugar food before physical examination will lead to high blood sugar. It is best not to eat high-sugar food two days before physical examination. In addition, the elderly should not exercise excessively before checking their blood sugar. Before the physical examination, the mood is irritable, the sleep is not good, and the blood sugar value may also rise. Therefore, before checking blood sugar, the elderly should not only avoid eating, but also pay attention to rest and adjust their mood.
2. Don't eat a high-fat, high-protein diet for 3 days before the elderly check their blood lipid and liver function.
The metabolic rate of fat and protein in the elderly is relatively slow. Clinical observation shows that after eating high-fat and high-protein food for 72 hours, some fat and protein in the body are still not completely metabolized, and the content of liver function enzymes will increase during examination, even leading to hyperlipidemia and high cholesterol. Therefore, in addition to not eating high-fat food within 3 days before physical examination, it is not advisable to drink alcohol within 24 hours before liver function examination, otherwise it will affect the results of liver function examination.
3, the elderly physical examination within 24 hours of urine routine should not be too much or too little water.
Under normal circumstances, adults consume about 2500 ml of water every day, and the urine output for one day and night is about 1500 ml. If you drink too much water, the urine will be diluted and the proportion of urine will decrease. When the urine specific gravity is lower than 1.438+00, it will cause the illusion of poor renal function. On the other hand, if drinking too little water and urine is concentrated, not only the specific gravity of urine will increase, but also the content of some cells (such as white blood cells and red blood cells) in urine will increase, thus causing the illusion of insufficient renal perfusion and urinary tract infection.
4. Old people should not eat a lot of high-protein food 3 days before renal function examination.
Urea nitrogen and serum creatinine are important indicators of renal function, and these two tests will also be affected by diet, especially urea nitrogen, which will increase significantly in the blood and serum creatinine value after a large intake of protein. In order to eliminate the influence of diet, you should avoid eating a lot of high-protein food 3 days before renal function examination.
5, the elderly fasting for 8 hours before physical examination.
Fasting for at least 8 hours before physical examination will affect blood sugar, blood lipid and liver function, but drinking a small amount of water and taking common drugs will not affect the test results.
6, the elderly do not take medicine for 3 days before the physical examination.
Do not take medicine for 3 days before physical examination, because the effects of various drugs in the body may affect the accuracy of physical examination.
7. The physical examination of the elderly should not exceed 10 in the morning.
Take blood at the specified time, no later than 10: 00. Otherwise, the blood state will be too late to change because of the influence of physiological endocrine hormones in the body. Although blood is still drawn on an empty stomach, the test value is easily distorted (such as blood sugar value) and the significance of the test will be lost.
Also, alcohol must be banned within 24 hours before the physical examination and ECG examination for the elderly to avoid misdiagnosis. After drinking alcohol, cerebral blood flow is accelerated by cranial Doppler examination, resulting in the illusion of vascular occlusion.
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