Clear differences by age and gender emerged from the study, the report said. Among them:
- The rotation speed of the apex of the heart decreases with age.
- Younger women have higher up-and-down motion velocities along the long axis of the ventricle than younger men, but those differences were reversed in older men and women.
- Compared to men, women demonstrated reduced twisting of the ventricle, apex rotation and muscle velocity toward the center of the left ventricle during contraction.
The study could lead to the use of such coronary imaging in diagnosing heart problems, cardiologists say.
While this is a small study group, the findings corroborate other reports we have been reading at CMR that talk about women's physiology being indeed different from men's, which has an effect on diagnostics, treatment and devices.
Many medical device manufacturers have put a focus on women's health needs, for instance in urology, cardiology and radiology applications and some have even developed female specific products for instance, Zimmer Holdings' knee replacement designed specifically for a woman's anatomy.
The differences have also prompted the launch of research bodies such as the Society for Women’s Health Research (SWHR), which campaigns to increase awareness of the conditions affecting women. The SWHR’s work with the National Institutes of Health (NIH) in the US has encouraged the inclusion of women in clinical studies which surprisingly has only happened since 1985. Until then, clinical trials and evaluations were based on men, who were assumed to represent the norm.
The exclusion of women from clinical evaluations has created a gap in the knowledge of how devices, drugs and techniques could be optimised for better outcomes and quality of life. Sex differences are responsible for variants in bone composition, drug metabolism and the rate at which the brain synthesises neurotransmitters, chemicals important to mood and functioning.
At CMR we're pleased to see that device companies are waking up to the fact that women have a different physiology to men; maybe car manufacturers could also take note!