Table 4:

Survey responses. See Supplementary Figure 1 for survey flow and nested questions.

Question	Responses (%)
Have you used MB to treat refractory shock?	N = 401
Yes	162 (40.4)
In your experience, does MB administration generally lead to clinical improvement?	N = 157
Yes	54 (34.4)
No	20 (12.7)
Unsure	55 (35.0)
Other	28 (17.8)
No	239 (59.6)
Have you considered using MB to treat refractory shock?	N = 237
Yes	66 (27.9)
No	171 (72.2)
Have you ever had trouble with, or been unsure of, pediatric dosing of MB?	N = 390
Yes	137 (35)
No	253 (65)
Would you consider randomizing this patient for a study in which they receive MB or a placebo?	N = 386
Yes	224 (58.0)
No	26 (6.7)
Need more information	136 (35.2)