How long is the empty stomach?Can I drink water during an empty stomach?

Zhengzhou University Affiliated to Zhengzhou Central Hospital Liu Dong

When performing blood glucose, blood lipids, renal function, liver function, liver, gallbladder, spleen, pancreatic and kidney color Doppler ultrasound, gastrointestinal color Doppler ultrasound examination, doctors often ask patients to take an empty stomach. Is the longer the air?

How long is the empty stomach?

Generally speaking, an empty stomach refers to "8 to 10 hours of an empty stomach in the morning."

The night before the blood drawing, patients should maintain their daily habits and maintain a normal diet structure.

It is wrong to not eat dinner the night before the blood drawing.

Because the body is in a state of excessive hunger, many indicators will change abnormally, so the results of this test cannot accurately reflect the actual situation of the patient.

For diabetic patients, hunger time is too long, and it is risk of hypoglycemia, so it is especially important for diabetic patients to eat normally the night before the physical examination.

The more empty time is not as good as possible.

The best blood collection time for medical examinations should not exceed 10 o'clock in the morning.

This is because when the human body is more than 12 hours and affected by the secretion of hormones, many indicators will change and cannot show the usual level. This will lose the significance of the examination, so the morning medical examination should not be late.

In addition, not all inspections require an empty stomach for 8 to 10 hours. Part of the inspection requires postprandial examination.

For example, blood glucose, C peptide, insulin measurement of 0.5, 1, 2, and 3 hours after meals, you need to strictly follow the doctor's order, and take time to take blood after eating.

Can I drink water during an empty stomach?

Generally, at least 6 hours before the physical examination and 8 hours of fasting. However, this does not mean that no water can be drunk. Drinking a small amount of water is no problem, such as drinking a small amount of water for taking medicine.

Be careful not to drink drinks, coffee, etc., you can only drink boiled water, otherwise it will affect the results of the inspection.

In addition, the empty stomach before the physical examination does not mean that the drug cannot be taken. The drugs that the subject must take every day cannot be interrupted at will, especially those drugs that may cause critical illnesses:

If hypoglycemic drugs, suddenly discontinuation will cause blood sugar fluctuations;

Drugs that reduce heart rate will increase the heart rate faster;

Drug -related drugs, rash suspension will cause symptoms such as hand tremor and panic;

There are also antihypertensive drugs, anticoagulant drugs, and strong heart drugs.

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