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Table 1 Clinical grading scale

From: Malignant hyperthermia when dantrolene is not readily available

CGS points

MH rank

MH probability

0

1

MH probability is almost never

3–9

2

MH probability is unlikely

10–19

3

MH probability is somewhat less than likely

20–34

4

MH probability is somewhat greater than likely

35–49

5

MH probability is very likely

50–108

6

MH probability is almost certain