He cannot stop his blood thinners. That is not a reason to rule out prostate surgery

The operation that removes the most tissue is the one recommended for patients whose bleeding risk is highest. That sounds backwards, and for a long time practice ran the other way: the assumption was that pushing the tissue aside or reducing its bulk would be gentler on a patient who bleeds easily than cutting the enlarged tissue out.

The reason this matters is a question I hear in clinic often enough to recognise it before it is finished. “I take a blood thinner for my heart rhythm — so I can't have the operation, can I?” It comes from men whose urine flow has become difficult because of an enlarged prostate. Anticoagulants suppress clotting, so bleeding during or after surgery can be harder to stop, blood loss greater, and recovery slower.

Why the drug is there in the first place#

These drugs are usually prescribed for the heart or the blood vessels. An irregular heartbeat — atrial fibrillation — a prosthetic heart valve, or a stent placed in a narrowed coronary artery are the common reasons. Stopping the drug on one's own raises the risk of a clot, and after a coronary stent there is often a period during which it has to be continued without interruption.

Add a urinary problem to that and the decision becomes difficult. Have the operation, and the question of stopping the drug is in the way; postpone it, and the difficulty passing urine continues.

Some men give up on surgery because the drug cannot be stopped, and arrive in clinic months later still carrying a catheter. One patient who came with his son opened not by asking whether the operation would go well, but whether he could have it at all while taking an anticoagulant. Being unable to stop the drug is not a reason to abandon the operation.

Why removing more tissue can bleed less#

Transurethral resection shaves the inside of the prostate away in pieces, and in doing so divides the vessels running between the tissue at many points at once. Small bleeding points appear scattered across the field, and finding and sealing them one by one is not easy.

Enucleation with a holmium laser works differently. It peels the enlarged tissue off whole, starting at the outer shell, and travels along the boundary between the adenoma and the prostatic capsule. When that plane separates cleanly the vessels come into view, so each can be sealed before moving on. The field stays visible during the operation, and the blood in the urine afterwards tends to clear comparatively quickly.

The anaesthetic is part of the same decision#

Spinal anaesthesia is given through a needle in the back, so if clotting is impaired the possibility of bleeding along that route has to be weighed. That is why general anaesthesia is chosen for some patients who cannot stop their medication. Which is appropriate depends on cardiac and pulmonary function and on the drugs being taken, and is settled in discussion with the anaesthetic team — which is why the operation and the anaesthetic cannot be decided separately.

The same operation is not the same result#

Bleeding can occur if the enlarged tissue is not correctly identified, and the course differs with technique. A prostate that has grown well beyond the usual range leaves more tissue to remove and a correspondingly heavier operation. The harder it is for a patient to stop the drug, the more the technique matters.

What to establish in the urology clinic#

1. Whether the cardiology or cardiovascular team has been consulted about continuing or stopping the medication.
2. Whether the operation under consideration has been matched to the size of the prostate and to how the bladder is functioning.
3. Whether the anaesthetic approach has been explained.

If the urinary difficulty has been going on for a long time, it is better to find out what treatment is possible in the present circumstances than to conclude in advance that surgery is out of reach.