NCI CTCAE v5.0 sinus bradycardia

Adverse event	Grade 1	Grade 2	Grade 3	Grade 4	Grade 5
Sinus bradycardia	Asymptomatic, intervention not indicated	Symptomatic, intervention not indicated; change in medication initiated	Symptomatic, intervention indicated	Life-threatening consequences; urgent intervention indicated	Death

Sinus bradycardia is characterized by a dysrhythmia with a heart rate less than 60 beats per minute that originates in the sinus node.

NCI CTCAE: National Cancer Institute Common Terminology Criteria for Adverse Events.

Reproduced from: Common Terminology Criteria for Adverse Events (CTCAE), Version 5.0, November 2017, National Institutes of Health, National Cancer Institute. Available at: https://ctep.cancer.gov/protocoldevelopment/electronic_applications/docs/CTCAE_v5_Quick_Reference_8.5x11.pdf (Accessed March 27, 2018).

Graphic 91244 Version 3.0