Overview of HeartLogic general evolution and contributing trends. Here, the general evolution of HL parameters is shown with a rapid and steep increase in the last seven days. It is observed that the third heart sound (S3), respiratory frequency, and nightly heart rate contribute to the increased HL index. Also, surprisingly, thoracic impedance rapidly increases. In contrast, heart rate variability and activity level significantly decreased. Also, due to the increased respiratory frequency, the number of apneas decreased.