Experimental Physiology, Journal Year: 2025, Volume and Issue: unknown
Published: Feb. 21, 2025
Abstract Cardiac activity responds dynamically to metabolic demands and neural regulation. However, little is known about this process during pregnancy. Reports show occasional fetal–maternal heart rate couplings, but it has remained unclear whether these couplings extend more complex oscillatory patterns of the rhythm. We developed a framework time‐varying measures rhythm, test presence co‐varying in concurrent maternal fetal (late pregnancy dataset, n = 10, labour 12). These were derived from first second‐order Poincaré plots, with aim describe changes short‐ long‐term rhythmicity, also dynamic shifts acceleration deceleration rate. found episodes maternal–fetal cardiac rhythm all explored, both datasets (at least 90% dataset presented significant correlation each measure, P < 0.001), delays suggesting bilateral interactions at different time scales. that intensify (test between late vs. datasets, 0.0015 plot‐derived measures). While most literature suggests breathing or contractions, we propose possibility may have signalling function context co‐regulatory mechanisms inter‐organ interactions. Understanding visceral oscillations utero enhance assessment healthy development.
Language: Английский