Factors related to elevated 24-h blood pressure in young adults.

Variation in 24-h blood pressure (BP) is associated with multiple factors, but the association has not been thoroughly examined in young adults. To elucidate the potential factors associated with variation in 24-h BP, 331 healthy medical students were investigated. Awake mean BP negatively correlated with sleep duration in males.

Measurement of hemodynamics during postural changes using a new wearable cephalic laser blood flowmeter.

Background: Patients with orthostatic hypotension have pathologic hemodynamics related to changes in body posture. A new cephalic laser blood flowmeter that can be worn on the tragus to investigate the hemodynamics upon rising from a sitting or squatting posture was developed.

Methods And Results: The relationship between cephalic hemodynamics and cerebral ischemic symptoms in 63 subjects in a sitting, squatting, and standing positions using the new device was evaluated.

New finger-occlusion plethysmograph for estimating peripheral blood flow and vascular resistance.

Background: The aim of the present study was to measure peripheral blood flow (BF) with a new finger-occlusion plethysmograph (FOP) and to compare this to BF measured with a laser Doppler flowmeter (LDF). An additional objective was to investigate the relationship between hypertension-related clinical parameters and peripheral vascular resistance (PVR) estimated from BF and mean blood pressure (BP) (PVR=mean BP/BF) in young subjects.

Methods And Results: The present study employed 101 young volunteers (61 males, 40 females, mean age 23.

Influence of mental stress on the plasma homocysteine level and blood pressure change in young men.

Objective. This study aimed to determine whether mental stress influences the plasma total homocysteine level or blood pressure in young men. Method.

Effects of pulse-synchronized massage with air cuffs on peripheral blood flow and autonomic nervous system.

Background: There are almost no reports on the physiological effects of the various electric massage devices available on the market. This report describes the effects on peripheral vascular circulation and autonomic-nervous system activity of a pulse-synchronized air-massage (PS-AM) device in which cuffs apply air pressure cyclically to the lower limbs only during the cardiac diastolic phase.

Methods And Results: The PS-AM device consists of a main unit with a pulse-wave detector that uses the pulse-wave to activate an air pump only during the cardiac diastolic phase.

Estimation of base blood pressure by using a new device in the outpatient clinic.

Direct measurement of intra-arterial blood pressure (BP) for 24-h provides approximately 100,000 values that vary enormously, but each (BPi) can be expressed by the equation BPi = BP0 + DeltaBPi (BP0, base BP; DeltaBPi, BP increment, i=1, 2, ...

Asymptomatic adrenal medullary hyperplasia detected with intraoperative hypertension: a case report.

We report a rare case of asymptomatic adrenal medullary hyperplasia detected by chance with intraoperative hypertension during surgery for ipsilateral renal cell carcinoma. A 41-year-old male visited our hospital with a complaint of left flank pain. He had normal blood pressure and plasma catecholamine level was within normal limits.