How tight should an under arm or compression shirt be for post-op gynecomastia surgery?

Thank you very much for your question, and congratulations on your recent gynecomastia procedure. At this point in your recovery process, the mild compression of an Under Armour shirt will help keep swelling at bay and promote healing, while keeping you comfortable, as well. Remember, the Under Armour shirt should be tight but not constricting, so in your situation, the large may be the appropriate size. If you are unsure about the correct fit, or have any further concerns, I recommend contacting your operating surgeon. 

Thank you for sharing your question and congratulations on your gynecomastia surgery.  Compressions shirts will not impact your surgical results but they will make you more comfortable by limiting your swelling after surgery.  Based on your narrative the Large size should be sufficient to keep you comfortable as only mild compression is needed to have positive effects.  Hope this helps.  

Our patients are required to wear a compression garment for the a few weeks following their #Gynecomastia surgery.The #compression garment helps to reduce the swelling, and the longer it is worn, the more quickly you will heal.We recommend it not be removed, at all, until the second or third day after the surgery. After that, we suggest they feel free to temporarily remove the #garment for showering or laundering only. We encourage our patients to maintain circumferential pressure for 4-6 weeks, but they may switch to an exercise compression garment when advised.

After gynecomastia surgery, wearing a compression shirt or garment is crucial for proper healing and optimal results. Here are some guidelines on how tight the compression garment should be:
1. Firm but Comfortable: The garment should provide firm compression without causing pain or discomfort. It should feel snug enough to support the surgical area and reduce swelling, but not so tight that it restricts breathing or causes significant discomfort.
2. Consistent Pressure: Ensure the garment provides even compression across the chest area. Uneven pressure can lead to complications or suboptimal healing.
3. No Restriction of Movement: While the garment should be tight, it should not restrict your range of motion or daily activities. You should be able to move your arms and perform regular tasks without significant discomfort.
4. Check for Proper Fit: The garment should fit well without causing bulging or excessive tightness at the edges. If you notice any indentations or extreme tightness, you may need a different size.
5. Follow Your Surgeon’s Instructions: Always follow the specific instructions provided by your plastic surgeon. They may have specific recommendations regarding the type and fit of the compression garment based on your individual case.
If you experience any issues such as severe discomfort, difficulty breathing, or signs of poor circulation (e.g., numbness, tingling, or a bluish color in the skin), contact your plastic surgeon immediately.

Compression shirts help reduce the swelling but shouldn't feel super tight.  Based on your description, large size would be tight enough.  Good luck.