BACKGROUND Premature cardiac contractions are associated with increased morbidity and mortality. Though experts associate premature atrial contractions (PACs) and premature ventricular contractions (PVCs) with caffeine, there are no data to support this relationship in the general population. As certain caffeinated products may have cardiovascular benefits, recommendations against them may be d...

The recent emergence of Wavelength Division Multiplexing (WDM) technology has led to a tremendous increase in the available transmission capacity in wide-area netwo r k s. Consequently, these networks may no longer be limited by transmission bandwidth, but rather by the processing capability of electronic switches, routers and multiplexers in the network.This realization has led to a new wave o...

BACKGROUND AND PURPOSE Matrix metalloproteinases (MMPs) are involved in tissue destruction produced by the neuroinflammatory response that follows ischemic stroke. In the present study we use an MMP array to investigate the blood levels of several MMPs in stroke patients and its relation with brain tissue damage and neurological outcome. METHODS Twenty-four patients with middle cerebral arter...

Angiopoietin-2 (Ang2) is a key proangiogenic factor, but its role in surgery-induced angiogenesis, a possible cause of cancer recurrence, is still elusive.We measured the plasma Ang2 levels in healthy controls (n = 42) and stage I-IV perioperative nonsmall cell lung cancer (NSCLC) patients (n = 227) with enzyme-linked immunosorbent assay, and examined the impact of Ang2 in the plasmas on in vit...

STUDY OBJECTIVE The Meyer Pediatric Hospital in Florence, Italy recently implemented the single provider model of emergency medicine. Prior to these changes, patients were triaged to a paediatric surgeon or paediatrician based on the complaint. The authors assess the outcomes of patients evaluated by surgeons prior to this change and compare them with those of patients seen by emergency physici...

Background and Purpose—This review will focus on the emerging principles of neural repair after stroke, and on the overlap between cellular mechanisms of neural repair in stroke and clinical principles of recovery and rehabilitation. Summary of Review—Stroke induces axonal sprouting and neurogenesis. Axonal sprouting occurs in tissue adjacent to the stroke and its connected cortical areas, and ...

Recently, chaotic dynamics-based data encryption techniques for wired and wireless networks have become a topic of active research in computer science and network security such as robotic systems, encryption, and communication. The main aim of deploying a chaos-based cryptosystem is to provide encryption with several advantages over traditional encryption algorithms such as high security, speed...

As a result of antihypertensive therapy, there has been a remarkable decrease in morbidity and mortality from such cardiovascular endpoints as stroke, coronary heart disease, and major hypertensive emergencies. In contrast, there has been no relenting in the increasing prevalence of cardiac failure and end-stage renal disease (ESRD) associated with hypertensive cardiovascular disease. Recent ex...