BACKGROUND The objective of this investigation was to evaluate changes in intrathoracic pressure (Ppl), airway pressure (Paw) and vital organ perfusion pressures during standard and intrathoracic pressure regulation (IPR)-assisted cardiopulmonary resuscitation (CPR). METHODS Multiple CPR interventions were assessed, including newer ones based upon IPR, a therapy that enhances negative intrath...

This article contains two novelties. First, a unified framework for testing and evaluating the adequacy of an estimated autoregressive conditional duration (ACD) model is presented. Second, two new classes of ACD models, the smooth transition ACD model and the time-varying ACD model, are introduced and their properties discussed. New misspecification tests for the ACD class of models are introd...

Objective The purpose of this study was to investigate whether changes occurred in the clinical features of acute colonic diverticulitis (ACD) over a period of 10 years, to estimate the long-term probability of disease recurrence and to investigate whether it could be treated in an outpatient setting. Methods Between January 1998 and January 2009, 488 ACD patients were diagnosed and treated in ...

Asymmetric cell division (ACD) is a physiologic process during development and tissue homeostasis. ACD produces two unequal daughter cells: one has stem/progenitor cell activity and the other has potential for differentiation. Recent studies showed that misregulation of the balance between self-renewal and differentiation by ACD may lead to tumorigenesis in Drosophila neuroblasts. However, it i...

Abstract— Equivalent charge method is used to design ultra wide band asymptotic conical dipole (ACD) antenna. Combination of linear charge density and point charges is used to generate different profiles for ACD antennas. Two different profiles of ACD antenna are used as a feed for reflector based impulse-radiating antennas (IRAs). This paper focuses on the selection of ideal ACD profile as wel...

Acetaldehyde (ACD), the first metabolite of ethanol, is a biologically active compound, which may mediate some of the reinforcing, behavioral and neurotoxic effects of ethanol. The objective of this study was to test the hypothesis that ACD is reinforcing within the mesolimbic system. The intracranial self-administration (ICSA) technique was employed to determine whether ACD was reinforcing in ...

purpose : to evaluate intraocular pressure (iop) and anterior chamber depth (acd) change after phacoemulsification with posterior chamber intraocular lens implantation methods : in this quasi-experimental study, 84 patients with senile cataract were included. all patients had normal iop. patients with traumatic and complicated cataract, any history of uveitis, glaucoma, or other ocular disease ...

BACKGROUND This study aimed to present experience in treating patients with posterior fossa epidural hematoma (PFEDH) and to discuss the risk factors, clinical features, and outcome in PFEDH patients with acute clinical deterioration (ACD). METHODS Twenty-seven patients with PFEDH initially treated conservatively were evaluated. A comparison was made between patients with and without ACD duri...

BACKGROUND The incidence of acute left-sided colonic diverticulitis (ACD) is increasing in the Western world. To improve the quality of patient care, a guideline for diagnosis and treatment of diverticulitis is needed. METHODS A multidisciplinary working group, representing experts of relevant specialties, was involved in the guideline development. A systematic literature search was conducted...