Noninvasive evaluation of brachial artery diameter (pulsed Doppler velocimetry) and pulse wave velocity (strain gauge mechanography) was performed in 23 normal subjects and 49 patients with uncomplicated essential hypertension. Pulsatile arterial function was described in terms of derived characteristic impedance and arterial compliance. Compared with normal controls, hypertensive patients had ...

Arteriosclerosis—arterial stiffening—is the basic cause of isolated systolic hypertension (ISH) and the present epidemic of heart failure in the elderly. Arteriosclerosis is equally important for the development of coronary events, stroke, dementia, and renal failure. The underlying pathology was described by Osler as ‘senile arteriosclerosis’ to distinguish it from essential hypertension (Osle...

INTRODUCTION Respiratory variation in arterial pulse pressure is a reliable predictor of fluid responsiveness in mechanically ventilated patients with circulatory failure. The main limitation of this method is that it requires an invasive arterial catheter. Both arterial and pulse oximetry plethysmographic waveforms depend on stroke volume. We conducted a prospective study to evaluate the relat...

Two competing schools of thought ascribe vascular disease states such as isolated systolic hypertension to fundamentally different arterial system properties. The "windkessel school" describes the arterial system as a compliant chamber that distends and stores blood and relates pulse pressure to total peripheral resistance (R(tot)) and total arterial compliance (C(tot)). Inherent in this descri...

Arterial pulse pressure has been widely used as surrogate of stroke volume, for example, in the guidance of fluid therapy. However, recent experimental investigations suggest that arterial pulse pressure is not linearly proportional to stroke volume. However, mechanisms underlying the relation between the two have not been clearly understood. The goal of this study was to elucidate how arterial...

Objective. This paper illustrates the evolution of our knowledge of the arterial pulse from ancient times to the present. Several techniques for arterial pulse evaluation throughout history are discussed. Methods. Using databases including Worldcat, Pubmed, and Emory University Libraries' Catalogue, the significance of the arterial pulse is discussed in three historical eras of medicine: ancien...

The perpuse of this research is to determine the effect of foot massage on physiologic indicators including pulse, respiration and mean arterial pressure. The hypothesis of this research is that foot massage decreases the patient´s heart rate, respiratory rate and mean arterial pressure. This research is a quasiexperimental study and a self-control clinical trial with repeated measures in witch...

Introduction:  One ofdiagnostic criteria for Acute Lung Injury and Acute Respiratory Distress Syndrome is  pao2/fio2 (PF) ratio 300 for ALI or 200 for ARDS. This criteria requires invasive arterial sampling. Measurement of Spo2/Fio2 (SF) ratio by pulseoximetry may be a reliable non invasive alternative to the PF ratio.   Methods and Materials: In a cross sectional study we enrolled 105 sample o...

Background: Pain management of children with a burn is one of the most important issues in pediatrics medicine. Non-pharmacological methods of pain control can play an important role in suitable some patients. This study was aimed conducted with the aim ofto investigating investigate the effect of Medical-directed play on the severity of pediatric pain during burn dressing change in children. ...