Glossary
DVT prophylaxis (blood thinners after surgery)
Quick answer
DVT prophylaxis means the measures used to prevent deep vein thrombosis, a blood clot in the leg veins, after surgery: blood-thinning medicine, compression devices and walking early. Doha knee surgeon Dr. Pablo Gelber at Aman Hospital tailors the plan to your operation and personal clot risk.
What it is
Surgery, reduced movement and the body's healing response all make blood more likely to clot. A clot in a deep leg vein can cause pain and swelling and, if a piece travels to the lungs, a pulmonary embolism, which is an emergency.
Prophylaxis can include injections or tablets that thin the blood, aspirin in some lower-risk cases, compression stockings or calf pumps, plenty of fluids, and getting up and walking as soon as it is safe.
Why it matters for patients
The risk is higher after knee replacement than after arthroscopy, and higher still with previous clots, cancer, hormone treatment, obesity, or long flights. Courses after knee replacement commonly last a few weeks.
Blood thinners carry a small bleeding risk, including wound oozing, so the type and length are balanced for each patient. Tell your surgeon about any medicines you already take.
Warning signs
- Calf pain, tenderness, warmth or swelling that is new or worsening
- Sudden shortness of breath, chest pain or coughing blood, which need emergency care straight away
- Unusual bleeding or bruising while on blood thinners
Frequently asked questions
Can I fly home after knee surgery?
Long flights add to clot risk. The timing depends on the operation and your risk factors, and extra measures such as continuing the blood thinner and wearing stockings are often advised.
Can I fast in Ramadan while on blood-thinning tablets?
Some tablets can be timed around iftar and suhoor, while injections may be another option. Discuss timing with your doctor, and the religious question with a scholar.
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