نتایج جستجو برای: cardiopulmonary system
تعداد نتایج: 2252280 فیلتر نتایج به سال:
a significant problem in multicarrier communication systems is the necessity to reduce the value of papr (peak-to-average power ratio) of transmitting signal. in this thesis we study the effect of the system parameters such as coding and modulation types on papr and ultimate ber in a mc-cdma system. in this study we consider fading channel as well as the nonlinearity of transmitter’s amplifier ...
BACKGROUND AND OBJECTIVES Nociceptin/Orphanin FQ (N/OFQ) is a non-classical endogenous opioid peptide that modulates immune function in vitro. Its importance in inflammation and human sepsis is unknown. The objectives of this study were to determine the relationship between N/OFQ, transcripts for its precursor (pre-pro-N/OFQ [ppNOC]) and receptor (NOP), inflammatory markers and clinical outcome...
Background & Aims: Cardiopulmonary resuscitation is one of the most critical medical emergencies. The effect of trained and skilled people on resuscitation has been positive. This study aimed to investigate the impact of visual self-assessment training on the level of knowledge, self-esteem, and performance of operating room personnel in the field of advanced cardiopulmonary resuscitation. Ma...
OBJECTIVES To evaluate the knowledge of basic life-support and training experience in cardiopulmonary resuscitation among the public in Hong Kong and to identify areas for improvement in public education. DESIGN Telephone interview using a structured multiple-choice questionnaire. SETTING Random cross-section of the Hong Kong public, from mid-March to May 2002. PARTICIPANTS Men and women ...
OBJECTIVES To characterise the efficiency of the cardiopulmonary baroreflex system in the early phase of heart failure and its relation to limitation of physical activity. DESIGN Forearm blood flow (venous occlusion plethysmography), vascular resistance, and central venous pressure (CVP), estimated from an antecubital vein, were measured in the supine position at baseline and 15 minutes after...
location verification system
OBJECTIVE Hyperglycaemia is associated with increased mortality and morbidity after cardiac surgery. While surgical stress results in hyperglycaemia after all operations, it has been suggested that cardiopulmonary bypass is the dominating contributor after cardiac surgery. This study aimed to determine the contribution of cardiopulmonary bypass to hyperglycaemia after coronary artery bypass. ...
OBJECTIVE Oxidative stress contributes to myocardial ischemia-reperfusion injury. We hypothesized that administration of the antioxidant N-acetylcysteine would have beneficial effects on myocardial function after cardiopulmonary bypass and cardioplegic arrest. METHODS Anesthetized dogs (n = 18) were instrumented with myocardial ultrasonic crystals and a left ventricular micromanometer. Systol...
Since its introduction in the 1960s as a treatment to restart the heart after sudden cardiac arrest from a heart attack, attempts at cardiopulmonary resuscitation have become more common in other clinical situations. Cardiopulmonary resuscitation can be a lifesaving treatment, with the likelihood of recovery varying greatly depending on individual circumstances; however, overall, the proportion...
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