What is the relationship between pacing output and morphology in Selective Placement?

The relationship between pacing output and morphology in Selective Placement emphasizes how output variations can influence the effectiveness of pacing and the preservation of intrinsic morphology. A reduction in output can lead to selective morphology loss because lower energy levels may not sufficiently capture the cardiac tissue, resulting in diminished or altered electrical signals being transmitted. This can make the differentiation between intrinsic and pacing morphologies less distinct, thereby compromising the quality and clarity of the pacing output.

In Selective Placement, a balance between output sufficient enough to achieve effective capture while also preserving the quality of the morphology is crucial. Too little output can result in subtleties of the intrinsic electrical activity being masked or lost, thus highlighting the importance of maintaining adequate pacing levels to ensure that the desired morphology is maintained. This principle underscores the necessity of adjusting pacing parameters to optimize both capture and morphology.