Cellulitis and Blood Sugar Concerns After Surgery - Surgery

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Hello Doctor: My father has a lump on his back below the cervical spine.
The doctor diagnosed it as cellulitis, and after surgery, he mentioned that it was several pimples clustered together.
The hospital tested his blood sugar after meals (my father has no history of diabetes), and the blood sugar level was over 200 regardless of whether he had eaten or not.
This seems strange; could it be a malfunction of the hospital's blood glucose meter? Please help clarify, thank you.

kk, 20~29 year old female. Ask Date: 2009/12/07

Dr. Lu Shangbin reply Surgery


Typically, when there is inflammation in the body, blood glucose levels may be slightly elevated, which is a normal physiological response.
Once the inflammation is controlled, blood glucose levels usually return to normal.
If there is potential diabetes, measuring HbA1c can provide an overview of blood glucose status.
It is advisable to consult a specialized endocrinologist for follow-up or to seek information from a nutritionist in the dietary department.
Generally, hospital equipment should be regularly calibrated, so it is unlikely that the blood glucose meter is malfunctioning.

Reply Date: 2009/12/07

More Info


Cellulitis, or 蜂窩性組織炎 in Mandarin, is a common bacterial skin infection that can occur after surgery, particularly in areas where the skin has been compromised. It typically presents with redness, swelling, warmth, and pain in the affected area. In your father's case, the swelling on his back could be a manifestation of this infection, especially if the surgical site was near the skin surface. The presence of multiple small bumps, which you described as "痘痘," may indicate localized inflammation or infection, possibly due to the surgical procedure or a reaction to sutures or other materials used during surgery.

Regarding the blood sugar readings, it is indeed concerning that your father, who has no history of diabetes, is experiencing elevated blood sugar levels (over 200 mg/dL) after meals and even when fasting. There are several factors to consider in this situation:
1. Stress Response: Surgery can induce a significant stress response in the body, which can lead to increased levels of stress hormones like cortisol. These hormones can raise blood sugar levels, even in individuals without a prior history of diabetes.

2. Infection: The presence of cellulitis can also contribute to elevated blood sugar levels. Infections can cause the body to release more glucose into the bloodstream as part of the immune response, which can lead to temporary hyperglycemia.

3. Medications: If your father was given steroids or other medications during or after surgery, these could also impact blood sugar levels. Corticosteroids, for example, are known to increase blood glucose levels.

4. Measurement Error: While it is possible that the blood glucose meter used in the hospital could be malfunctioning, it is less likely. Most hospitals use calibrated devices, but if there is any doubt, a repeat test using a different device or method (like a laboratory test) could help clarify the situation.

5. Dietary Factors: If your father has been consuming a diet higher in carbohydrates or sugars post-surgery, this could also contribute to elevated blood sugar levels. It's essential to monitor his diet and ensure he is eating balanced meals.

Given these considerations, it would be prudent to follow up with your father's healthcare provider. They may recommend monitoring his blood sugar levels more closely, conducting further tests to rule out any underlying conditions, and possibly consulting an endocrinologist if the elevated blood sugar persists.

In the meantime, here are some recommendations for managing his condition:
- Monitor Blood Sugar: Keep a log of his blood sugar readings, noting the time of day and what he has eaten. This information can help healthcare providers assess his situation more accurately.


- Dietary Adjustments: Encourage a balanced diet that is low in simple sugars and high in fiber, which can help stabilize blood sugar levels.

- Hydration: Ensure he stays well-hydrated, as dehydration can also affect blood sugar levels.

- Follow-Up Care: Schedule a follow-up appointment with his surgeon or primary care physician to discuss the cellulitis and the blood sugar concerns. They may want to perform additional tests or adjust his treatment plan based on his recovery progress.

In summary, while cellulitis can lead to complications post-surgery, including elevated blood sugar levels, it is essential to monitor and address these issues promptly. By working closely with healthcare providers, you can ensure that your father receives the appropriate care and support during his recovery.

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