scholarly journals Disagreement in cardiac output measurements between fourth-generation FloTrac and critical care ultrasonography in patients with circulatory shock: a prospective observational study

2019 ◽  
Vol 7 (1) ◽  
Author(s):  
Thomas Kaufmann ◽  
◽  
Ramon P. Clement ◽  
Bart Hiemstra ◽  
Jaap Jan Vos ◽  
...  
Keyword(s):  
Cardiac Output ◽  
Critical Care ◽  
Observational Study ◽  
Prospective Observational Study ◽  
Circulatory Shock ◽  
Fourth Generation ◽  
Critical Care Ultrasonography ◽  
Cardiac Output Measurements

scholarly journals Feasibility of cardiac output measurements in critically ill patients by medical students

2020 ◽  
Vol 12 (1) ◽  
Author(s):  
Geert Koster ◽  
Thomas Kaufmann ◽  
Bart Hiemstra ◽  
Renske Wiersema ◽  
Madelon E. Vos ◽  
...  
Keyword(s):  
Cardiac Output ◽  
Critical Care ◽  
Medical Students ◽  
Critically Ill ◽  
Critically Ill Patients ◽  
Left Ventricular ◽  
Percentage Error ◽  
Poor Agreement ◽  
Cardiac Output Measurements

Abstract Background Critical care ultrasonography (CCUS) is increasingly applied also in the intensive care unit (ICU) and performed by non-experts, including even medical students. There is limited data on the training efforts necessary for novices to attain images of sufficient quality. There is no data on medical students performing CCUS for the measurement of cardiac output (CO), a hemodynamic variable of importance for daily critical care. Objective The aim of this study was to explore the agreement of cardiac output measurements as well as the quality of images obtained by medical students in critically ill patients compared to the measurements obtained by experts in these images. Methods In a prospective observational cohort study, all acutely admitted adults with an expected ICU stay over 24 h were included. CCUS was performed by students within 24 h of admission. CCUS included the images required to measure the CO, i.e., the left ventricular outflow tract (LVOT) diameter and the velocity time integral (VTI) in the LVOT. Echocardiography experts were involved in the evaluation of the quality of images obtained and the quality of the CO measurements. Results There was an opportunity for a CCUS attempt in 1155 of the 1212 eligible patients (95%) and in 1075 of the 1212 patients (89%) CCUS examination was performed by medical students. In 871 out of 1075 patients (81%) medical students measured CO. Experts measured CO in 783 patients (73%). In 760 patients (71%) CO was measured by both which allowed for comparison; bias of CO was 0.0 L min−1 with limits of agreement of − 2.6 L min−1 to 2.7 L min−1. The percentage error was 50%, reflecting poor agreement of the CO measurement by students compared with the experts CO measurement. Conclusions Medical students seem capable of obtaining sufficient quality CCUS images for CO measurement in the majority of critically ill patients. Measurements of CO by medical students, however, had poor agreement with expert measurements. Experts remain indispensable for reliable CO measurements. Trial registration Clinicaltrials.gov; http://www.clinicaltrials.gov; registration number NCT02912624

scholarly journals The effect of reference position versus right lateral position on the intra-abdominal pressure in mechanically ventilated patients

2018 ◽  
Vol 8 (6) ◽  
pp. 93
Author(s):  
Ghada Shalaby Khalaf Mahran ◽  
Sayed K. Abd-Elshafy ◽  
Manal Mohammed Abd El Neem ◽  
Jehan A. Sayed
Keyword(s):  
Mechanical Ventilation ◽  
Critical Care ◽  
Observational Study ◽  
Prospective Observational Study ◽  
Body Position ◽  
Critical Issue ◽  
Lateral Position ◽  
Abdominal Pressure ◽  
University Hospitals ◽  
Abdominal Hypertension

Background and objective: Intra-abdominal hypertension (IAH) is a frequent plentiful problem in patients admitted to critical care units. It ranges from a surge incidence of morbidity and mortality to a particular need for nursing health care, so recognition of the occurrence of IAH is a very critical issue for critical care nurses and physician. This study aimed to recognize the effects of various body position with the various head of bed elevation on the intra-abdominal pressure (IAP) in patients with mechanical ventilation.Methods: Design: A non-randomized, prospective observational study was used. Setting: Trauma and general intensive care units at Assuit University Hospitals. Method: In a prospective observational study, during the third day of mechanical ventilation, 60 patients were screened for IAP via a urinary catheter, in two various body positions in three separate degrees of the head of the bed (HOB) elevation (0º, 15º, and 30º). The position was changed at least 4 hours apart over a 24-h period.Results: In lateral recumbence, IAP measurements were significantly elevated compared to supine position, they were 19.70 ± 3.09 mmHg versus 16.00 ± 3.14 (p < .001), 22.80 ± 3.56 mmHg versus 19.03 ± 2.95 (p < .001), and 26.08 ± 3.59 mmHg versus 21.46 ± 2.90 versus (p < .001) at 0º, 15º, and 30º respectively. The mean of IAP difference was 3.7 ± 3.0 mmHg at 0º, 3.8 ± 1.00 mmHg at 15º, and 5.5 ± 1.01 mmHg at 30 º (p < .005).Conclusions: IAP reading is significantly elevated by changing from supine to lateral position especially with HOB elevation and significantly correlated with mortality rate in patients with mechanical ventilation

Classification of dermatological disorders in critical care patients: A prospective observational study

2013 ◽  
Vol 28 (2) ◽  
pp. 220.e1-220.e8 ◽  
Author(s):  
Mariona Badia ◽  
Luis Serviá ◽  
Josep Manel Casanova ◽  
Neus Montserrat ◽  
Judit Vilanova ◽  
...  
Keyword(s):  
Critical Care ◽  
Observational Study ◽  
Prospective Observational Study ◽  
Dermatological Disorders ◽  
Critical Care Patients

Antimicrobial Use in Outpatient Hemodialysis Units

2013 ◽  
Vol 34 (4) ◽  
pp. 349-357 ◽  
Author(s):  
Graham M. Snyder ◽  
Priti R. Patel ◽  
Alexander J. Kallen ◽  
James A. Strom ◽  
J. Kevin Tucker ◽  
...  
Keyword(s):  
Retrospective Study ◽  
Observational Study ◽  
Prospective Study ◽  
Prospective Observational Study ◽  
Chronic Hemodialysis ◽  
Fourth Generation ◽  
Antimicrobial Use ◽  
National Guidelines ◽  
Surgical Prophylaxis ◽  
Narrow Spectrum

Objective.To quantify and characterize overall antimicrobial use, including appropriateness of indication, among patients receiving chronic hemodialysis.Design.Retrospective and prospective observational study.Setting.Two outpatient hemodialysis units.Patients.All patients receiving chronic hemodialysis.Methods.The rate of parenteral antimicrobial use (number of doses per 100 patient-months) was calculated retrospectively from September 2008 through July 2011. Indication and appropriateness of antimicrobial doses were characterized prospectively from August 2010 through July 2011. Inappropriate administration was defined as occasions when criteria for infection based on national guidelines were not met, failure to choose a more narrow-spectrum antimicrobial on the basis of culture data, or occasions when indications for surgical prophylaxis were not met.Results.Over the 35-month retrospective study period, the rate of parenteral antimicrobial use was 32.9 doses per 100 patient-months. Vancomycin was the most commonly prescribed antimicrobial, followed by cefazolin and third- or fourth-generation cephalosporins. Over the 12-month prospective study, 1,003 antimicrobial doses were prescribed. Among the 926 (92.3%) doses for which an indication for administration was available, 276 (29.8%) were classified as inappropriate. Of these, a total of 146 (52.9%) did not meet criteria for infection, 74 (26.8%) represented failure to choose a more narrow-spectrum antimicrobial, and 56 (20.3%) did not meet criteria for surgical prophylaxis. The most common inappropriately prescribed antimicrobials were vancomycin and third- or fourth- generation cephalosporins.Conclusions.Parenteral antimicrobial use was extensive, and as much as one-third was categorized as inappropriate. The findings of this study provide novel information toward minimizing inappropriate antimicrobial use.

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