Flexible Cystoscopy: What to Expect Before, During and After

Последнее обновление: Август 25, 2026

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Flexible cystoscopy is a look inside the bladder using a scope about the width of a drinking straw, done while you are awake, in a clinic room, in a few minutes. It is one of the most frequently performed procedures in urology and one of the most dreaded in prospect — usually far more than it deserves.

Rigid instruments came first, in 1878, and could not bend to follow the curve of the urethra, which made them genuinely painful in an awake patient. Fibre optics changed that in the 1970s: a scope that follows the anatomy rather than fighting it can be passed comfortably with local anaesthetic alone, which is why an inspection that once required an anaesthetic is now an outpatient appointment.

• Урологический центр Бангкок госпиталь Таиланд Бронирование онлайн 02-310-3009 bhquro@bdms.co.th
• Больница Самитивдж Шрирача Чонбури 088-022-1445

Why it is done

Visible blood in the urine is the most important reason, and it deserves to be stated first rather than listed among others. Blood that you can see needs the bladder inspected, because scans do not reliably show a flat tumour on the bladder lining. A normal ultrasound or CT is not a substitute for looking. This holds even if the bleeding happened once and stopped, and even if it was painless — painless is more concerning, not less.

The other reasons:

• Surveillance after bladder cancer. Bladder tumours recur, so anyone treated for one has repeat inspections on a schedule for years. This is the commonest reason people have the procedure more than once.
• Persistent irritative symptoms with negative cultures — urgency, frequency and discomfort where nothing grows. Carcinoma in situ can present exactly this way, which is discussed under white cells in the urine with a negative culture.
• Assessing a poor stream where a стриктура уретры or bladder neck narrowing is suspected — often alongside a flow test.
• Removing a ureteric stent, which takes moments and avoids a second anaesthetic.
• Investigating a suspected fistula or an anatomical abnormality.

What actually happens

1. You lie on your back. Eat and drink normally beforehand — there is no fasting and no bowel preparation.
2. The area is cleaned, and anaesthetic gel is put into the urethra and left for several minutes to work. This waiting time is not padding; going too early is the main reason the procedure is uncomfortable.
3. The scope is passed gently while the urologist watches the screen, through the urethra and prostate into the bladder, which is filled with sterile fluid so the lining can be seen.
4. The whole bladder surface is inspected systematically and the findings recorded. You can usually watch on the screen if you want to, and many people prefer to.
5. It typically takes a few minutes. You go home straight afterwards and can drive yourself.

Most people describe a strong urge to pass urine and a stinging sensation as the scope goes through, rather than pain. It is over quickly. In women the urethra is much shorter and the procedure is quicker still.

Two corrections to the advice this page used to give

Antibiotics are decided case by case, not given as a routine

The earlier version stated that every patient is discharged with several days of oral antibiotics. That routine has been removed, because the decision is made case by case. Diagnostic flexible cystoscopy is a low-risk procedure and most people having one do not need antibiotics at all. Whether you are given them depends on your own circumstances — a urinary tract known to be colonised, a long-term catheter, immunosuppression, diabetes, a recent infection, or a procedure that turned out to be more than a simple inspection. Where they are used, a single dose around the time of the procedure is usually what is needed rather than a course afterwards.

This matters beyond one procedure. Antibiotics given to people who do not need them cause side effects, disturb normal bowel bacteria and select for resistant organisms — the same argument made elsewhere on this site about bacteria in the urine without symptoms. It would be inconsistent to argue that there and then hand out a week of antibiotics after a five-minute inspection.

Blood thinners are also an individual decision

The earlier version implied that anticoagulants and antiplatelet drugs would be held before the procedure as a matter of course. That is also decided case by case rather than by a rule. Diagnostic flexible cystoscopy carries a low bleeding risk, so for many people the medication simply continues. Against that sits the risk of stopping it — clot, stroke or a cardiac event — which for some patients is the greater of the two dangers. Which way it goes depends on why you take the drug, which drug it is, and whether anything beyond a plain inspection is planned.

Still tell your urologist exactly what you take, because the answer changes if a biopsy or any treatment is planned during the same procedure. But do not stop blood-thinning medication on your own initiative before a cystoscopy appointment — that decision belongs to the doctor who prescribed it.

Afterwards, and what is normal

• Stinging on passing urine for a day or two, and needing to go more often. Drinking plenty helps and it settles by itself.
• Lightly blood-stained urine for a day or so, particularly if anything was biopsied.
• A urinary infection in a small minority — the reason to know the warning signs rather than to take antibiotics pre-emptively.
• You will be told what was seen, usually straight away, since the findings are visible in real time.

Symptoms that need attention rather than waiting

In an emergency in Thailand, call 1669.

• Fever or shaking chills in the days after the procedure.
• Inability to pass urine with a painful full bladder — uncommon, but it needs treatment the same day.
• Heavy bleeding or clots, as opposed to lightly stained urine.
• Burning and frequency that is worsening after two or three days rather than improving.
• And, before any of this: visible blood in the urine that has not yet been investigated. That is the symptom to act on, not to watch.

Часто задаваемые вопросы

Does flexible cystoscopy hurt?

Most people describe stinging and a strong urge to pass urine rather than pain, and it is over in a few minutes. Anaesthetic gel is placed in the urethra and needs several minutes to take effect — starting before it has worked is the usual reason the procedure is uncomfortable.

Will I be given antibiotics afterwards?

It is decided case by case rather than given automatically, and most people having a simple diagnostic inspection do not need them. The answer depends on your own circumstances — a urinary tract known to carry bacteria, a long-term catheter, immunosuppression, diabetes, a recent infection, or a procedure that involved more than looking. Where antibiotics are used, a single dose around the time of the procedure is usually enough. An earlier version of this article said several days of antibiotics were given to everyone routinely, and that has been corrected.

Do I have to stop my blood thinner?

That is decided case by case rather than by a rule. The bleeding risk of a diagnostic inspection is low, so for many people the medication continues unchanged; for others the balance goes the other way. It depends on why you take it, which drug it is, and whether anything beyond a plain inspection is planned. Tell your urologist exactly what you take — and do not stop it on your own before the appointment.

I had blood in my urine once and it stopped. Do I still need this?

Yes. A single episode of visible blood that settled is still a reason to inspect the bladder, and painless bleeding is more concerning rather than less. Scans do not reliably show a flat tumour on the bladder lining, so a normal ultrasound or CT does not replace looking.

Will I be asleep?

No — it is done awake under local anaesthetic as an outpatient, and you can drive yourself home. A rigid cystoscopy under anaesthesia is arranged instead when treatment as well as inspection is planned.

When do I get the result?

Usually immediately, because the urologist is looking at the bladder in real time. If a biopsy was taken, that part takes longer and is discussed at a follow-up appointment.

Arranging a consultation

Dr. Soarawee Weerasopone sees patients at Головной офис Бангкокской больницы and at Samitivej Sriracha Hospital in Chonburi on 088-022-1445. If you have had visible blood in the urine, bring any scans already performed and a note of when the bleeding occurred.

Bangkok Hospital Telemedicine is available for patients who cannot attend in person, including international patients — arrange it in advance by email to the Urology department at bhquro@bdms.co.th. Samitivej Sriracha is in-person only. Enquiries about cost are answered by the hospital, not by this website.

Отказ от ответственности: This content is written and reviewed by Dr. Soarawee Weerasopone, a board-certified urologist at Bangkok Hospital Headquarters, and is intended for education only. It is not medical advice, diagnosis or a prescription for any individual, and no advice, diagnosis or prescription is given through personal messaging channels or social media. Dr. Soarawee operates no public social media account; any account offering private consultation in his name is fraudulent. In an emergency in Thailand, call 1669.