OBJECTIVE Anaphylaxis is the most severe form of radiocontrast media (RCM) induced hypersensitivity and can be life-threatening if profound hypotension is combined. With increased use of iodine based RCM, related hypersensitivity is rapidly growing. However, the clinical characteristics and risk factors of RCM induced anaphylaxis accompanied by hypotension (anaphylactic shock) are not clearly d...

Hungry fruit flies can be trained by exposing them to two chemical odorants, one paired with the opportunity to feed on 1 M sucrose. On later testing, when given a choice between odorants the flies migrate specifically toward the sucrose-paired odor. This appetitively reinforced learning by the flies is similar in strength and character to previously demonstrated negatively reinforced learning,...

OBJECTIVE This study was conducted to assess the correlation between central venous pressure (CVP) and venous blood gas (VBG) analysis parameters, to facilitate management of severe sepsis and septic shock in emergency department. MATERIAL AND METHODS This diagnostic study was conducted from January 2014 until June 2015 in three major educational medical centers, Tehran, Iran. For patients se...

Since loss of blood volume is the initiating factor common to most types of traumatic shock, the therapeutic problem has been studied experimentally primarily from this point of view. Confusing or complicating factors, such as local trauma and the sepsis of trauma and anesthetics including barbiturates, have been eliminated by limiting the experimental method to simple hemorrhage in the unanest...

This paper presents analysis of an unexpected failure during vibration and shock life test of an electronic circuit board that has been in use for more than 15 years. During testing, an aluminum bracket used to mount a transistor and provide a path for heat transfer was damaged. Prognostic methods were employed to determine whether the bracket failure could have been predicted prior to the life...

Sudden cardiac death (SCD) is a major cause of mortality throughout the world, accounting for 300 000 deaths per year in the USA. The introduction of the implantable cardioverter defibrillator (ICD) in the 1980s significantly reduced the risk of SCD by terminating life-threatening ventricular tachyarrhythmias. Subsequent clinical trials confirmed the survival benefit with implanted ICDs in at-r...

BACKGROUND Recent results from the largest multicenter randomized trial (Shockless IMPLant Evaluation [SIMPLE]) on defibrillation threshold (DFT) testing suggest that while shock testing seems safe, it does not reduce the risk of failed shocks or prolong survival. A contemporary systematic review of DFT versus no-DFT testing at the time of implantable cardioverter-defibrillator implantation was...

conclusions this study suggests that obese patients in hs may have a higher risk of hemodynamic instability compared to their nonobese counterparts primarily due to obesity-induced increases in intra-abdominal pressure resulting in reduced venous return. results in hemorrhage simulation, moderate increases in bmi were found to produce greater decreases in map and co compared to the normal subje...

Typically, to study the effects of consecutive earthquakes, it is necessary to consider definite intensity levels of the first shock. Methods commonly used to define intensity involve scaling the first shock to a specified maximum interstorey drift. In this study the structure’s predefined elastic spectral acceleration caused by the first shock is also considered for scaling. This study aims to...

BACKGROUND We investigated the acute effects of implantable cardioverter-defibrillator shock on myocardium, cardiac function, and hemodynamics in relation to left ventricular systolic function. METHODS AND RESULTS We studied 50 patients who underwent implantable cardioverter-defibrillator implantation and defibrillation threshold (DFT) testing: 25 patients with left ventricular ejection fract...