ฆสพ.สบส. ๒๙๘๓/๒๕๖๗

What tests are needed to find out if I have Malignant Hyperthermia (MH)?

There are three main ways to diagnose malignant hyperthermia (MH):

  1. Family history taking It is crucial to thoroughly check whether any direct relatives have experienced serious complications or died while under anesthesia, as this is the most important initial screening method.
  2. Genetic testing By taking a blood sample to detect abnormalities in inherited genes, and...
  3. Muscle biopsy (CHCT) This is the international standard (gold standard) and the most accurate method, involving surgically taking a tissue sample from the thigh and testing its reaction to anesthesia in a specialized laboratory.

Therefore, if your last name is on the 32-risk list or you have a suspicious family history, you should consult an anesthesiologist to prepare and plan for the safe use of anesthesia before any surgery.


 This answer is not a diagnosis. Please consult a doctor if you have any worrisome symptoms.

News about rhinoplasty: Let's learn about Malignant Hyperthermia (MH), a silent threat that is passed down genetically.

Regarding the recent news about a patient who underwent rhinoplasty and is still unconscious from anesthesia, I want everyone to understand that "this is not a typical surgical procedure." It's a specific bodily reaction to certain types of anesthesia, occurring in 1 out of 100,000-250,000 cases (this figure only includes cases requiring general anesthesia).

What is Malignant Hyperthermia (MH)?

MH is a condition characterized by a sudden and severe rise in body temperature (high fever exceeding 40 degrees Celsius), severe muscle spasms, and acidosis, resulting from the body's exposure to... "Anesthetic inhalant" หรือ "Muscle relaxants" Some types stimulate abnormal genes in the body.

🧬 Genetics: A topic so close to home that you need to check your last name!

The terrifying thing about this disease is... "Genetic transmission" Yes, it's passed down from grandparents to grandchildren, and the person may never even know they have the condition until they receive anesthesia for the first time in their life.

In Thailand, data from anesthesiologists indicates that there have been reports of individuals at high risk. 14 นามสกุล From now on, if you or a family member uses these surnames, you need to be especially careful.

  1. Jiuyan
  2. Tipayakraisorn
  3. Beautiful Diamond
  4. Inthep
  5. Khmer keyboard
  6. Todd Kaew
  7. Charoen Dong
  8. Phothidet
  9. Mawong
  10. Sandalwood
  11. Prangthong
  12. Onnapa
  13. Round and rolling
  14. Oops, noon water.

Another source indicates that there are as many as... 32 นามสกุล (This is a duplicate of the above.)

  1. Thipkraisorn
  2. Jiu Yan
  3. Beautiful Diamond
  4. Inthep
  5. Paem Khom
  6. Mawong
  7. Charoen Dong
  8. Bright candle
  9. Todd Kaew
  10. Wiwat people
  11. Prang Thong
  12. Phothidet
  13. Sandalwood
  14. Cheerful mood
  15. Gentle
  16. Round and rolling
  17. Vithan
  18. farm
  19. Takkan
  20. Baworn Wiratkul
  21. Akrawanichlert
  22. Relying on the city
  23. Noon water
  24. Phlai Thongdee
  25. Chanthawong
  26. Banana
  27. Fisheries
  28. Intharak
  29. Dechraksa
  30. Kongrat
  31. The tiger is full.
  32. Rongsanthia

(Note: Other surnames also carry a risk if there is a family history of deaths or adverse reactions during anesthesia.)

💉 The rare antidote "Dantrolene" that you need to know about.

When MH (Myasthenia Gravis) occurs, the only medication that can save lives is... “Dantrolene” Yes, but the point is, this medication is very scarce in Thailand and is usually only available in large hospitals because the incidence of this disease is very low. Many hospitals keep it until it expires without using it, but when the time comes, it's truly a life-saving drug.

🔍 How can I find out if I have MH (Myasthenia Gravis)?

If you are concerned or are in a high-risk group, the doctor recommends the following testing methods.

1. Genetic Testing

  • How to test: A blood sample is taken for testing to check for gene abnormalities (the most common being the RYR1 gene).
  • The advantages: It doesn't hurt much, just a blood draw.
  • Limitations: Genetic testing may not cover all abnormalities 100% (a negative result doesn't mean you don't have it) and is quite expensive.

2. Muscle biopsy (Caffeine Halothane Contracture Test – CHCT)

  • How to test: It was a minor surgery to take a tissue sample from the thigh area for testing its reaction to caffeine and anesthetics in the lab.
  • The advantages: It is the gold standard method for diagnosis.
  • Limitations: A biopsy is required, and there are only a few testing centers in Thailand.

3. Taking a family history (most important!).

  • Check to see if any blood relatives have ever experienced abnormally high body temperature, irregular heartbeat, or unexplained death during or after anesthesia.

💡 Advice from the doctor.

Before any surgery, whether minor or cosmetic.

  1. Inform the anesthesiologist: Provide your last name and detailed family history.
  2. Choose a medical facility that is well-equipped: If you know you are at risk, you should choose surgery at a hospital that has the necessary equipment and Dantrolene on hand.
  3. Alternative options: Inform your doctor that you would like to use an alternative to high-risk anesthesia methods, such as local anesthesia or intravenous sedation (TIVA), instead of inhaled anesthetic gas.

Out of concern for everyone's safety and beauty, please remember to check your health history before undergoing any surgery. ❤️

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