Long-term measurement of cardiovascular variables by telemetry in laboratory animals has become indispensable in recent years. However, limited battery life and management of large volumes of recorded data are major drawbacks. These limitations can often be overcome by intermittent sampling of data. The question is, how much data does one need to collect to accurately reflect the underlying ave...

UNLABELLED The aim of this study was to compare the accuracy and reliability of simple methods of quantifying regional cerebral blood flow (rCBF) with 123I-labeled N-isopropyl-p-iodoamphetamine (IMP) and SPECT and to determine which method was best. METHODS Four methods were examined: (a) the microsphere method with continuous withdrawal of arterial blood, which was based on a microsphere mod...

OBJECTIVE We report a 44-year old man with ectopic adrenocorticotropic hormone (ACTH) syndrome caused by bronchial carcinoid that developed Cushing syndrome. METHODS We performed several imaging studies, including chest and abdominal CT, for exploration of nodules and selective pulmonary arterial sampling for localizing a source of ectopic ACTH production. RESULTS The patient was diagnosed ...

INTRODUCTION Haemolysis of blood samples is a common problem encountered in the Emergency department (ED). It leads to inaccurate blood results and has cost implications as blood samples very often have to be retaken. The purpose of our study was to determine which factors in blood sampling were associated with higher rates of haemolysis. MATERIALS AND METHODS An observational convenience sam...

abstract objective: to determine the correlation between blood gas parameters and central venous pressure (cvp) in patients suffering from septic shock. m e t h od s : forty adult patients with diagnosis of septic shock who were admitted to the emergency department (ed) of shohadaye tajrish hospital affiliated with shahid beheshti university of medical sciences, and met inclusion and exclusion ...

introduction:  one ofdiagnostic criteria for acute lung injury and acute respiratory distress syndrome is  pao2/fio2 (pf) ratio 300 for ali or 200 for ards. this criteria requires invasive arterial sampling. measurement of spo2/fio2 (sf) ratio by pulseoximetry may be a reliable non invasive alternative to the pf ratio.   methods and materials: in a cross sectional study we enrolled 105 sample o...

OBJECTIVE Anemia is common in severely ill patients, and blood sampling plays a relevant causative role. Consequently, blood transfusions are frequent an related to several complications. Trying to reduce the transfusion-related risk, minimizing blood loss is mandatory. Thus, this work aimed to evaluate a closed blood sampling system as a strategy to spare unnecessary blood losses and transfusi...