With the continuous improvement of living standards, people's awareness of health examination is getting stronger and stronger, but do you know that some inadvertent behaviors before the physical examination are likely to affect the results of the physical examination, and we must strictly abide by the precautions before the physical examination to ensure the accuracy of the physical examination results.
1. Do I have to be fasting before the physical examination?
On the day of the physical examination, you must fast for at least 6~8 hours before the examination, do not eat after 8 o'clock in the evening and do not drink water after 10 o'clock in the evening before the general physical examination, otherwise it will affect the results of imaging examination items such as blood sugar, blood lipids, liver and kidney function and abdominal ultrasound.
2. What is the significance of fasting examination?
1. Eating will increase the concentration of certain components in the blood, affecting liver and kidney function, blood sugar, blood lipids, etc.
2. The mood in the early morning is relatively stable, the body is close to the basal metabolic state, and the results obtained can reflect the actual situation more truly.
3. Let the food in the stomach empty, and the abdominal intestinal gas is less at this time, so that the upper gastrointestinal imaging examination shows more clearly.
3. Can't I drink any water before the physical examination?
It is best not to drink a lot of water the night before the physical examination, as drinking a lot of water will dilute the blood, resulting in errors in the detection of blood glucose, blood lipids, blood viscosity, etc. However, it is no problem to drink a small amount of water in order to take medicine on the morning of the physical examination, remember not to drink sugary drinks on an empty stomach, only plain water, and it is best to control it within 50 to 100 ml.
4. What should I pay attention to in terms of diet before the physical examination?
A diet high in sugar, protein, and fat
Diets high in sugar, protein, and fat should be avoided before the physical examination. Try not to eat or drink all kinds of sweets, beverages, eggs, meat, fried foods, animal offal, etc., otherwise the accuracy of blood sugar, urine glucose, blood lipids, liver and kidney function and other test indicators will be affected.
High-iodine vs. high-purine diet
Do not eat too much seafood, such as algae, kelp, marine fish, jellyfish skin, etc., two weeks before the physical examination, and eat less foods with high purine content, such as animal offal, some soy products, seafood, broth, hot pot soup, etc. It may affect the test results of thyroid function and blood uric acid index.
Animal blood products
One or two days before the physical examination and stool, it is forbidden to eat blood products such as pig blood, chicken blood, duck blood, etc., and avoid eating spinach, pork liver, and spicy food, which may lead to a "false positive" occult blood test result.
Stimulant diets
Do not drink tea, coffee and other stimulating drinks 3 days before the physical examination, and do not drink too much. Strong tea, coffee, and alcohol consumption will affect related indicators, such as triglycerides, aminotransferases, and uric acid, etc., and can also promote changes in blood pressure, increase heartbeat, induce irregular heartbeat, and reduce the accuracy of electrocardiograms.
Take relevant medications
Cold medicines and potassium-excreting diuretics should be stopped before the physical examination, as transaminases may increase liver function and electrolyte levels may change. Antibiotics should also be stopped before the physical examination, which may affect the results of blood and urine routines. If gastroscopy and colonoscopy are to be performed, antiplatelet and anticoagulant drugs such as aspirin and clopidogrel need to be discontinued.
5. What else should I pay attention to?
1. Avoid strenuous exercise 2 days before the physical examination.
2. Avoid staying up late 3 days before the physical examination and ensure adequate sleep.
3. It is recommended that those with chronic diseases such as hypertension and diabetes should carry relevant medicines with them when they go to the physical examination, and take the medicine in time after completing the fasting physical examination items to avoid adverse consequences.
4. Take off all kinds of accessories on the body the night before the physical examination, such as earrings, necklaces, etc., and wear loose and comfortable clothes without metal buttons, sequins or prints on the day of the physical examination, so as to facilitate radiological examination; it is recommended that women should not wear underwear with underwires, and do not wear onesies, pantyhose, dresses, etc., so as to facilitate electrocardiogram, ultrasound and other examinations.