Myasthenia Gravis Quantitative Score (QMGS) and Crisis Risk

Calculates the Quantitative Myasthenia Gravis Score (QMGS) across 13 test items, myasthenic crisis risk assessment (FVC <1L threshold), pyridostigmine dose optimization, and thymectomy eligibility by AChR antibody status.

Weight
Height
Clinical Guidance

BMI is a screening measure of body size, not a direct measure of body fat. The standard WHO categories are underweight (<18.5), normal (18.5–24.9), overweight (25–29.9), and obese (≥30).

BMI can overestimate body fat in athletes with high muscle mass and underestimate it in older adults with low muscle mass. Interpret it alongside waist circumference and clinical context rather than as a standalone diagnosis.

⚕ Clinical Disclaimer: These calculators are for educational and reference purposes only. Always verify results with qualified clinical judgment and current clinical guidelines. Do not use as a sole basis for medical decisions.
Advertisement

How It Works

Calculates the Quantitative Myasthenia Gravis Score (QMGS) across 13 test items, myasthenic crisis risk assessment (FVC <1L threshold), pyridostigmine dose optimization, and thymectomy eligibility by AChR antibody status

Each component has a specific meaning:

  • 13 test items — The 13 test items recorded for the scenario being assessed.
  • Pyridostigmine dose optimization — The pyridostigmine dose optimization recorded for the scenario being assessed.
  • Thymectomy eligibility by AChR antibody status — The thymectomy eligibility by achr antibody status recorded for the scenario being assessed.

Note: Interpret the mg qmgs score result against the thresholds and context described above.

How to Use

Enter the 13 test items, pyridostigmine dose optimization, thymectomy eligibility by AChR antibody status for the scenario you are assessing. Calculates the Quantitative Myasthenia Gravis Score (QMGS) across 13 test items, myasthenic crisis risk assessment (FVC <1L threshold), pyridostigmine dose optimization, and thymectomy eligibility by AChR antibody status. Use the mg qmgs score result to inform your calculation.

Frequently Asked Questions