Q: Methylene blue should be use witth high caution in which sets of patient? 


Answer: Methylene blue is lately getting very popular in ICUs and ORs for refractory vasoplegia. But methylene blue should be avoided or be given with high caution in patients with

• pulmonary hypertension
•  glucose-6-phosphate dehydrogenase (G6PD) deficiency
• acute lung injury