Cystometric研究

定义

Cystometric研究 measures the amount of fluid in the bladder when you first feel the need to urinate, when you are able to sense fullness, and when your bladder is completely full.

选择的名字

CMG; Cystometrogram

如何执行测试

在膀胱测量学研究之前, you may be asked to urinate (void) into a special container that is interfaced with a computer. This type of study is called a uroflow, during which the following will be recorded by the computer:

• The time it takes you to begin urinating
• The pattern, speed, and continuity of your urinary stream
• 尿量
• How long it took you to empty your bladder

You will then lie down, and a thin, flexible tube (catheter) is gently placed in your bladder. The catheter measures any urine left in the bladder. A smaller catheter is sometimes placed in your rectum in order to measure abdominal pressure. Measuring electrodes, similar to the sticky pads used for an ECG, are placed near the rectum.

A tube used to monitor bladder pressure (cystometer) is attached to the catheter. Water flows into the bladder at a controlled rate. You will be asked to tell the health care provider when you first feel the need to urinate and when you feel that your bladder is completely full.

经常, your provider may need more information and will order tests to evaluate your bladder function. This set of tests is often referred to as urodynamics or complete urodynamics. The combination includes three tests:

• Measured voiding without a catheter (uroflow)
• 膀胱测量(充盈期)
• Voiding or emptying phase test

For complete urodynamic testing, a much smaller catheter is placed in the bladder. You will be able to urinate around it. Because this special catheter has a sensor on the tip, the computer can measure the pressure and volumes as your bladder fills and as you empty it. You may be asked to cough or push so that the provider can check for urine leakage. This type of complete testing can reveal a lot of information about your bladder function.

For even more information, x-rays can be taken during the test. 在这种情况下, 而不是水, a special fluid (contrast) that shows on an x-ray is used to fill your bladder. This type of urodynamics is called videourodynamics.

如何准备考试

No special preparations are needed for this test.

婴幼儿及儿童, preparation depends on the child's age, 过去的经验, 以及信任程度. For general information regarding how you can prepare your child, see the following topics:

• Preschooler test or procedure preparation (3至6岁)
• School age test or procedure preparation (6至12岁)
• Adolescent test or procedure preparation (12至18岁)

考试的感觉如何

There is some discomfort associated with this test. 你可能会经历:

• 膀胱充盈
• 冲洗
• 恶心想吐
• 疼痛
• 出汗
• 我急着要小便
• 燃烧

为什么要进行测试

The test will help determine the cause of bladder 排尿功能障碍.

正常的结果

Normal results vary and should be discussed with your provider.

异常结果意味着什么

Abnormal results may be due to:

• 前列腺肿大
• 多发性硬化症
• 膀胱过动症
• 膀胱容量减少
• 脊髓损伤
• 中风
• 尿路感染

风险

There is a slight risk for urinary tract infection and 尿中带血.

注意事项

This test should not be done if you have a known urinary tract infection. Existing infection increases the possibility of false test results. The test itself increases the possibility of spreading the infection.

参考文献

布鲁克BM, Nitti VW. Urodynamic and video-urodynamic evaluation of the lower urinary tract. In: Partin AW, Dmochowski RR, Kavoussi LR, Peters CA, eds. Campbell-Walsh-Wein泌尿外科. 12日艾德. Philadelphia, PA: Elsevier; 2021:chap 114.

Grochmal SA. Office testing and treatment options for interstitial cystitic (painful bladder syndrome). 见:福勒GC编. Pfenninger and Fowler's Procedures for 初级护理. 第四版. Philadelphia, PA: Elsevier; 2020:chap 98.

Lentz GM, Miller JL. Lower urinary tract function and disorders: physiology of micturition, 排尿功能障碍, 尿失禁, 尿路感染, 以及膀胱疼痛综合症. In: Gershenson DM, Lentz GM, Valea FA, Lobo RA, eds. 全面的妇科. 8日艾德. Philadelphia, PA: Elsevier; 2022:chap 21.