Normal bladder pressure

Normal bladder pressure should be between 0 and 15 cmH2O. Bladder pressure is a relatively important data in the test. By measuring bladder pressure, we can understand the health status of the cardiovascular system, nervous system, renal function and lung function, which can provide an important basis for diagnosing diseases or formulating nursing measures. The method of measuring bladder pressure is also relatively simple. The patient lies in supine position, empties the bladder, and then injects normal saline with a catheter.

1. What is the normal value of bladder pressure?

Normal: 0-15cmH2O Mild: greater than 15cmHO

Mild to moderate: greater than 25 cm HO

Severe: 35 cmH?O or more, often indicating abdominal compartment syndrome

The patient lies supine, empties the bladder, and 50-100 ml of normal saline is injected into the bladder through a Foley catheter. The manometer is connected, with the pubic symphysis as the zero plane. The data obtained from the scale unit on the manometer is the bladder pressure, which is approximately equal to the intra-abdominal pressure. The unit is CmHO, and the international unit is mmHg.

How does cystometry work?

1. Assess whether the patient's urinary catheter is patency and bladder is empty.

2. Monitor intra-abdominal pressure as directed by your doctor.

3. Patient preparation: ECG monitoring, explanation, appropriate restraint for irritable patients and sedation when necessary, patients lying flat, and privacy protection.

4. Material preparation: treatment tray, extension tube, 25ml normal saline, ruler, a tee, and sterile scissors.

5. Connect the pipeline: disinfect the drainage tube, cut it open with sterile scissors, connect it to the "straight" tee, and connect the side port of the tee to the extension tube and the syringe.

6. After emptying the bladder, rotate the three-way switch to connect the end of the catheter to the extension tube. Inject 20 ml of sterile saline into the tube as the transmission medium of the intra-abdominal pressure, and measure the patient's intra-bladder pressure with the patient's mid-axillary line as the zero point.

7. Disconnect the syringe, connect the extension tube to the atmosphere, and observe the fluctuation of the water column.

8. Terminal sterile protection.

9. Get accurate readings. After the operation, turn back the tee to connect the urinary catheter and drainage tube to maintain unobstructed drainage, tidy up the supplies, and place the patient in the correct lying position.

10. Keep good records and report to the doctor.