Is there a risk of blot clots formation that may result in deep vein thrombosis or heart attack or stroke?

As with any surgical procedure, deep vein thrombosis  (DVT) is a risk of otoplasty. However, it is extremely rare. 

if you are young and healthy the risks of a life threatening complication are extremely low.  Biggest rushes are cosmetic such as asymmetry or relapse of the ear protrusion.

In adults otoplasty is usually carried out under a local anaesthetic (awake). In a healthy person a local anaesthetic otoplasty would have a negligible effect on the risk of deep vein thrombosis. A stroke and heart attack are also minimal risk for someone having a local anaesthetic.However, for example, the risks would be different for someone who was on anticoagulation having had a DVT who needed to stop their medication for surgery.General anaesthetics do have a small risk for DVT, stroke and heart attack but in young, healthy, adults the risks are small. In particular if you will be able to mobilise well after surgery which one would expect with an otoplasty.I advise you seek the opinion of a suitably qualified and experienced plastic surgeon. Discuss surgery under a local anaesthetic if you want to minimise these types of risks.Best wishes.

Great question, thank you.  While blood clots or serious complications can be a risk with any procedure, they are very rare.  If you are young and healthy the likelihood of a DVT occurring from an otoplasty is minimal.  Best thing to do is make sure you are up walking and moving during your post operative recovery period.  Best thing to do is ensure you are healthy prior to your surgery and discuss your concerns with your surgeon.  
The most common complications associated with otoplasty are asymmetry, persistent ear protrusion leading to revision surgery.  Thanks again for the great question.  Best wishes, Dr. Lindsay Sturm

  In our practice, the otoplasty procedure is performed under local anesthesia as an outpatient surgical procedure, therefore any health complications mentioned in your question are exceedingly rare.  It is also important  to make sure that you are in excellent health before  undergoing elective cosmetic surgery.