Cardiac Dimensions and Function Are Not Altered among Females with the Myalgic Encephalomyelitis/Chronic Fatigue Syndrome.
Iversen, Per Ole, von Lueder, Thomas Gero, Kardel, Kristin Reimers et al.·Healthcare (Basel, Switzerland)·2020
Researchers used heart ultrasounds to check if the hearts of people with ME/CFS were structurally different or working differently than healthy people's hearts. They found no significant differences in heart size or function between the 16 women with ME/CFS and 10 healthy women they studied. This suggests that ME/CFS exercise intolerance and lactate buildup may not be caused by problems with how the heart itself is structured or functioning.