Sintomas do trato urinário inferior em homens
Revisado por Dr Colin Tidy, MRCGPÚltima atualização por Dr Philippa Vincent, MRCGPLast updated 8 Jun 2023
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Nesta série:Problemas de próstataPróstata aumentadaRetenção urináriaExame de PSAEstenose uretralProstatite crônica
Lower urinary tract symptoms (LUTS) are a very common problem, especially in men over the age of 65 years. They can be caused by various conditions. These symptoms may include slowing of the urine stream and needing to get up to pass urine at night.
There are different causes of LUTS and the treatment will depend on the cause. Some men choose not to have treatment if their symptoms are not too bothersome and the cause is not serious.
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What are lower urinary tract symptoms (LUTS)?
LUTS are usually divided into storage of urine (also called irritative) and voiding (also called obstructive) symptom groups.
Voiding symptoms include: poor stream, hesitancy (having to wait for the urine flow to start), intermittent flow and straining when passing urine.
Storage symptoms include: increased frequency and urgency of passing urine (having a need to pass urine urgently), urge incontinence and needing to get up to pass urine at night.
Other symptoms may include feeling the need to pass urine again after just emptying the bladder and dribbling of urine after going to the toilet.
What causes lower urinary tract symptoms (LUTS)?
Voltar ao conteúdoThere are various causes of LUTS. The most common causes include:
An enlarged prostate gland. The prostate gland is situated around the neck of the bladder. When this gets bigger it can cause voiding symptoms.
Water balance problems. As people get older, it becomes harder for the body to reduce the amount of urine that they pass at night. This leads to the need to pass urine more often at night. Therefore, at the age of 65 and over it can be normal to pass urine at least once a night.
Other less common causes of LUTS include diabetes mellitus, urinary infections, bladder stones, câncer de próstata, bladder cancer and neurological conditions (eg, esclerose múltipla).
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What tests are commonly performed?
Voltar ao conteúdoThe tests you may have will vary depending on the symptoms.
A doctor may examine the prostate to see how big it is. This is done by inserting a gloved finger through the anus into the rectum to feel the back of the prostate. The size of the bladder may be assessed by examining the tummy (abdomen).
The most common tests performed include:
A urine dipstick test to exclude an infection in the urine or any blood in the urine.
A blood test for glucose to exclude diabetes.
Other blood tests may also be performed - for example, to test the função dos seus rins, and also a Exame de PSA. These tests vary between cases.
It might be suggested to complete a urinary frequency volume chart on which the times passing urine are documented alongside the amount of urine passed each time.
Lower urinary tract symptoms (LUTS) treatment
Voltar ao conteúdoThe treatment for LUTS will depend upon:
The underlying cause.
How much the symptoms are interfering with the quality of life.
For example, if you have an enlarged prostate then a medicine can be offered to shrink the prostate gland or - less commonly nowadays - an operation to remove some of the prostate. Different operations can also be performed for men with other symptoms.
Medicines can also be effective to improve symptoms of an overactive bladder and storage symptoms. They can also improve symptoms of passing urine in the night.
If there are problems with incontinence of urine then a small tube (a catheter) to drain the urine from the bladder might be of benefit. Many men use catheters just to empty their bladders so they do not have a catheter in all the time. Rarely, some men may need to have long-term catheters.
A urology specialist referral might be suggested, especially if symptoms have not improved with some of the self-help measures or with some medication, and also if some further specialist tests are needed.
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Self-help treatment for lower urinary tract symptoms
Voltar ao conteúdoThe following self-help measure might help:
Reduce drinking in the evening. It is ideal to try to drink as little as possible after 4 pm if you are having night-time symptoms.
Try to anticipate times when urinary frequency and urgency are likely to be most inconvenient and reduce the volume of fluid drunk beforehand.
Consider changing what is being drunk. Fizzy and caffeine-containing drinks can all make LUTS worse. It is best to stop drinking these.
Parar de fumar may significantly improve symptoms, as nicotine irritates the bladder.
Sitting to pass urine. Evidence shows that men with LUTS have reduced symptoms if they sit to pass urine instead of standing.
Try to train the bladder. This means you should try to hold on to urine for longer when experiencing a frequent desire to pass urine. This can be done gradually - literally holding on for 1 minute longer, then 2 minutes etc and building up to longer and longer times.
If hesitancy is a problem - try to relax when standing to pass urine. It may be easier to sit than stand.
If urgency is a problem - some distraction techniques can be tried such as breathing exercises and mental tricks (for example, counting) to take the mind off the bladder. Bladder training can be useful here too.
Exercícios para o assoalho pélvico. These can help people to hold on to urine for longer and also reduce the risks of having accidents. The pelvic floor muscles are those used when trying to interrupt the flow of urine. Exercises involve tightening these muscles for around 10 seconds, at least 10 times each day.
Patient picks for Problemas urinários em homens

Rim e trato urinário
Retenção urinária
Retenção urinária significa que você está tendo problemas para esvaziar completamente a bexiga. Pode ocorrer de repente (retenção urinária aguda) ou pode se desenvolver ao longo de um período mais longo (retenção urinária crônica). A retenção urinária aguda é uma emergência médica. A retenção urinária é mais comum em homens do que em mulheres. Torna-se mais comum à medida que você envelhece. Em homens na faixa dos 70 anos, a retenção urinária ocorre em cerca de 1 em cada 100 homens. Para homens na faixa dos 80 anos, a retenção urinária ocorre em cerca de 3 em cada 100 homens. Você pode precisar de exames para ajudar a encontrar a causa da sua retenção urinária. O tratamento e o resultado para retenção urinária aguda e crônica dependerão da causa subjacente. Você deve consultar um médico imediatamente se não conseguir urinar quando sua bexiga estiver cheia e dolorida.
por Dra. Rosalyn Adleman, MRCGP

Saúde do homem
Infecção urinária em homens
Most urine infections in men are caused by germs (bacteria) which come from your own bowel. They cause no harm in your bowel but can cause infection if they get into other parts of your body. Some bacteria lie around your back passage (anus) after you pass a stool (faeces). These bacteria sometimes travel to the tube which passes urine from your bladder (the urethra) to the outside. Some bacteria thrive in urine and multiply quickly to cause infection. A urine infection is often called a urinary tract infection (UTI) by doctors. When the infection is just in the bladder and urethra, this is called a lower UTI, or cystitis. If it travels up to affect one or both kidneys as well then it is called an upper UTI or pyelonephritis. This can be more serious than lower UTIs, as the kidneys can become damaged by the infection.
por Dra. Rosalyn Adleman, MRCGP
Leitura adicional e referências
- Diretrizes para o Manejo dos Sintomas do Trato Urinário Inferior Masculino Não-Neurogênico (LUTS), incl. Obstrução Prostática Benigna (BPO); Associação Europeia de Urologia (2022)
- Pelvic floor muscle exercises for men; Prostate Cancer UK.
- LUTS em homens; NICE CKS, junho de 2025 (acesso apenas no Reino Unido)
- Oelke M, De Wachter S, Drake MJ, et al; Uma abordagem prática para o manejo da noctúria. Int J Clin Pract. 2017 Nov;71(11):e13027. doi: 10.1111/ijcp.13027. Epub 2017 Oct 5.
- de Jong Y, Pinckaers JH, ten Brinck RM, et al; Urinating standing versus sitting: position is of influence in men with prostate enlargement. A systematic review and meta-analysis. PLoS One. 2014 Jul 22;9(7):e101320. doi: 10.1371/journal.pone.0101320. eCollection 2014.
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Histórico do artigo
As informações nesta página são escritas e revisadas por clínicos qualificados.
Próxima revisão prevista para: 12 de maio de 2028
8 Jun 2023 | Última versão

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