Blood Pressure

Around the Clock Blood Pressure: Sleep, Circadian Rhythms, and Ambulatory Monitoring

Blood pressure is a dynamic physiologic signal that varies across the 24-hour under the combined influence of sleep and wakefulness, endogenous circadian timing, behavior, environmental exposures, and treatment. Conventional clinic measurements capture only a small fraction of this physiology, whereas ambulatory blood pressure monitoring can reveal clinically important patterns such as nocturnal hypertension, abnormal dipping, the morning surge, and short-term blood pressure variability. At the same time, rapid advances in wearables are creating new opportunities to characterize blood pressure and related physiological rhythms over longer periods and in everyday life. This Article Collection will bring together contemporary work on the temporal organization of blood pressure, with particular emphasis on the interactions among sleep, circadian rhythms, ambulatory monitoring, and emerging digital measurement approaches.

This topic is important because cardiovascular and cerebrovascular risk is not determined solely by a single daytime blood pressure value. Blood pressure during sleep, the timing and magnitude of daily blood pressure changes, and the alignment of blood pressure rhythms with sleep and circadian physiology may provide information that is missed by office measurements alone. Yet major methodological and clinical questions remain, including how best to define sleep and wake periods, quantify dipping and other 24-hour phenotypes, distinguish circadian from behavioral influences, assess reproducibility across monitoring sessions, and translate around-the-clock measurements into actionable care. Integrating expertise from hypertension, sleep medicine, chronobiology, epidemiology, engineering, and digital health can help establish more rigorous approaches to measuring, interpreting, and ultimately using 24-hour blood pressure information.

We welcome Original Research Articles and Review Articles addressing the physiology, measurement, clinical significance, and management of around-the-clock blood pressure. Relevant topics include nocturnal hypertension, dipping and nondipping patterns, morning blood pressure surge, blood pressure variability, circadian regulation and circadian disruption of blood pressure, effect of shift work and irregular sleep schedules on blood pressure pattern, ambulatory blood pressure monitoring methodology, reproducibility and phenotype definition, cardiovascular, cerebrovascular, renal, and cognitive outcomes, timing of antihypertensive and behavioral interventions, and advances in wearable or cuffless blood pressure monitoring. Studies integrating blood pressure with sleep, activity, heart rate, autonomic, or other physiological signals are also encouraged. The Collection aims to connect mechanistic, methodological, and clinical perspectives to advance a more complete understanding of blood pressure across the full 24-hour cycle.

Keywords:

• Ambulatory blood pressure monitoring
• Nocturnal hypertension
• Circadian rhythms
• Sleep
• Wearable blood pressure monitoring

All manuscripts submitted to this Article Collection will undergo desk assessment and peer review if they can pass the desk assessments as part of our standard editorial process; the Guest Advisor for this Collection will not be handling the manuscripts (unless they are an Editorial Board member).

The deadline for submitting manuscripts is 30 June 2027.

Please contact Catherine Teng at catherine.teng@taylorandfrancis.com  with any queries and discount codes regarding this Article Collection.