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OBJECTIVE To compare resuscitation outcomes and myocardial function among intra-arrest head cooling, delayed surface cooling, and uncooled controls. DESIGN Prospective animal study. SETTING University-affiliated animal research laboratory. SUBJECTS Twenty-four male domestic pigs. INTERVENTIONS Ventricular fibrillation remained untreated for 10 mins(More)
BACKGROUND Current studies have demonstrated that applying therapeutic hypothermia for 12 to 24 hours after resuscitation from cardiac arrest improves the outcomes of cardiopulmonary resuscitation. The present study investigated whether a shorter duration of therapeutic hypothermia induced quickly and early after resuscitation would provide an equal(More)
OBJECTIVES This study examined the effects of biphasic truncated exponential waveform design on survival and post-resuscitation myocardial function after prolonged ventricular fibrillation (VF). BACKGROUND Biphasic waveforms are more effective than monophasic waveforms for successful defibrillation, but optimization of energy and current levels to(More)
  • Ting Yu, Max Harry Weil, +4 authors Joe Bisera
  • 2002
BACKGROUND Current versions of automated external defibrillators (AEDs) require frequent stopping of chest compression for rhythm analyses and capacity charging. The present study was undertaken to evaluate the effects of these interruptions during the operation of AEDs. METHODS AND RESULTS Ventricular fibrillation was electrically induced in 20 male(More)
Autoimmune regulator (AIRE) gene mutation is responsible for the development of organ-specific autoimmune disease with monogenic autosomal recessive inheritance. Although Aire has been considered to regulate the elimination of autoreactive T cells through transcriptional control of tissue-specific Ags in thymic epithelial cells, other mechanisms of(More)
In earlier studies, we found that a nonselective beta-adrenergic blocking agent, propranolol, facilitated cardiac resuscitation, reduced postresuscitation myocardial ectopy, and improved postresuscitation survival. However, the potential adverse effects and specifically the negative inotropic actions of propranolol prompted our further investigation of the(More)
Physical contact between thymocytes and the thymic stroma is essential for T cell maturation and shapes the T cell repertoire in the periphery. Stromal elements that control these processes still remain elusive. We used a mouse strain with mutant NF-kappaB-inducing kinase (NIK) to examine the mechanisms underlying the breakdown of self-tolerance. This(More)
BACKGROUND The success of resuscitation with a 1-shock versus the conventional 3-shock defibrillation protocol was investigated subject to the range of treatment variation imposed by automated external defibrillators (AEDs). METHODS AND RESULTS Ventricular fibrillation was induced in 44 domestic pigs. After 7 minutes of untreated VF, animals were(More)
OBJECTIVES Current automated external defibrillations require interruptions in chest compressions to avoid artifacts during electrocardiographic analyses and to minimize the risk of accidental delivery of an electric shock to the rescuer. The earlier three-shock algorithm, with prolonged interruptions of chest compressions, compromised outcomes and(More)