We recommend that alterations in clinical parameters after vs before CRT be assessed within 6 to 12 months after CRT implantation to guide ongoing HF management.
(Strong Recommendation, Low-Quality Evidence)

Values and preferences: This recommendation is based on the importance of ensuring optimal medical therapy and deriving important benefit in improvement in reverse remodelling and QOL with CRT delivery.

Practical tip: See Figure 2. The process of LV remodelling is a dynamic process that begins at the time of CRT implantation, but requires ongoing reassessment throughout follow-up.