scholarly journals Accuracy of zero-heat-flux thermometry and bladder temperature measurement in critically ill patients

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Anselm Bräuer ◽  
Albulena Fazliu ◽  
Thorsten Perl ◽  
Daniel Heise ◽  
Konrad Meissner ◽  
...  
Keyword(s):  
Heat Flux ◽  
Critically Ill ◽  
Core Temperature ◽  
Critically Ill Patients ◽  
Gold Standard ◽  
Prospective Observational Study ◽  
Standard Of Care ◽  
Limits Of Agreement ◽  
Blood Temperature ◽  
Bladder Temperature

AbstractCore temperature (TCore) monitoring is essential in intensive care medicine. Bladder temperature is the standard of care in many institutions, but not possible in all patients. We therefore compared core temperature measured with a zero-heat flux thermometer (TZHF) and with a bladder catheter (TBladder) against blood temperature (TBlood) as a gold standard in 50 critically ill patients in a prospective, observational study. Every 30 min TBlood, TBladder and TZHF were documented simultaneously. Bland–Altman statistics were used for interpretation. 7018 pairs of measurements for the comparison of TBlood with TZHF and 7265 pairs of measurements for the comparison of TBlood with TBladder could be used. TBladder represented TBlood more accurate than TZHF. In the Bland Altman analyses the bias was smaller (0.05 °C vs. − 0.12 °C) and limits of agreement were narrower (0.64 °C to − 0.54 °C vs. 0.51 °C to – 0.76 °C), but not in clinically meaningful amounts. In conclusion the results for zero-heat-flux and bladder temperatures were virtually identical within about a tenth of a degree, although TZHF tended to underestimate TBlood. Therefore, either is suitable for clinical use.German Clinical Trials Register, DRKS00015482, Registered on 20th September 2018, http://apps.who.int/trialsearch/Trial2.aspx?TrialID=DRKS00015482.

scholarly journals Comparison of zero heat flux and double sensor thermometers during spinal anaesthesia: a prospective observational study

2022 ◽  
Author(s):  
Sirkka-Liisa Lauronen ◽  
Maija-Liisa Kalliomäki ◽  
Jarkko Kalliovalkama ◽  
Antti Aho ◽  
Heini Huhtala ◽  
...  
Keyword(s):  
Heat Flux ◽  
Core Temperature ◽  
Spinal Anaesthesia ◽  
Prospective Observational Study ◽  
Repeated Measurements ◽  
Mean Difference ◽  
Concordance Correlation ◽  
Limits Of Agreement ◽  
Non Invasive ◽  
The Mean

AbstractBecause of the difficulties involved in the invasive monitoring of conscious patients, core temperature monitoring is frequently neglected during neuraxial anaesthesia. Zero heat flux (ZHF) and double sensor (DS) are non-invasive methods that measure core temperature from the forehead skin. Here, we compare these methods in patients under spinal anaesthesia. Sixty patients scheduled for elective unilateral knee arthroplasty were recruited and divided into two groups. Of these, thirty patients were fitted with bilateral ZHF sensors (ZHF group), and thirty patients were fitted with both a ZHF sensor and a DS sensor (DS group). Temperatures were saved at 5-min intervals from the beginning of prewarming up to one hour postoperatively. Bland–Altman analysis for repeated measurements was performed and a proportion of differences within 0.5 °C was calculated as well as Lin`s concordance correlation coefficient (LCCC). A total of 1261 and 1129 measurement pairs were obtained. The mean difference between ZHF sensors was 0.05 °C with 95% limits of agreement − 0.36 to 0.47 °C, 99% of the readings were within 0.5 °C and LCCC was 0.88. The mean difference between ZHF and DS sensors was 0.33 °C with 95% limits of agreement − 0.55 to 1.21 °C, 66% of readings were within 0.5 °C and LCCC was 0.59. Bilaterally measured ZHF temperatures were almost identical. DS temperatures were mostly lower than ZHF temperatures. The mean difference between ZHF and DS temperatures increased when the core temperature decreased.Trial registration: The study was registered in ClinicalTrials.gov on 13th May 2019, Code NCT03408197.

scholarly journals Procalcitonin Clearance for Early Prediction of Survival in Critically Ill Patients with Severe Sepsis

2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
Mohd Basri Mat Nor ◽  
Azrina Md Ralib
Keyword(s):  
Critically Ill ◽  
Critically Ill Patients ◽  
Prospective Observational Study ◽  
Small Sample Size ◽  
Small Sample ◽  
Sepsis Group ◽  
Single Centre ◽  
Dynamic Changes ◽  
Prediction Of Survival ◽  
Single Centre Study

Introduction. Serum procalcitonin (PCT) diagnosed sepsis in critically ill patients; however, its prediction for survival is not well established. We evaluated the prognostic value of dynamic changes of PCT in sepsis patients.Methods. A prospective observational study was conducted in adult ICU. Patients with systemic inflammatory response syndrome (SIRS) were recruited. Daily PCT were measured for 3 days. 48 h PCT clearance (PCTc-48) was defined as percentage of baseline PCT minus 48 h PCT over baseline PCT.Results. 95 SIRS patients were enrolled (67 sepsis and 28 noninfectious SIRS). 40% patients in the sepsis group died in hospital. Day 1-PCT was associated with diagnosis of sepsis (AUC 0.65 (95% CI, 0.55 to 0.76)) but was not predictive of mortality. In sepsis patients, PCTc-48 was associated with prediction of survival (AUC 0.69 (95% CI, 0.53 to 0.84)). Patients with PCTc-48 > 30% were independently associated with survival (HR 2.90 (95% CI 1.22 to 6.90)).Conclusions. PCTc-48 is associated with prediction of survival in critically ill patients with sepsis. This could assist clinicians in risk stratification; however, the small sample size, and a single-centre study, may limit the generalisability of the finding. This would benefit from replication in future multicentre study.

scholarly journals Inter-rater reliability of the Full Outline of UnResponsiveness score and the Glasgow Coma Scale in critically ill patients: a prospective observational study

Critical Care ◽  
2010 ◽  
Vol 14 (2) ◽  
pp. R64 ◽  
Author(s):  
Michael Fischer ◽  
Stephan Rüegg ◽  
Adam Czaplinski ◽  
Monika Strohmeier ◽  
Angelika Lehmann ◽  
...  
Keyword(s):  
Observational Study ◽  
Glasgow Coma Scale ◽  
Critically Ill ◽  
Critically Ill Patients ◽  
Prospective Observational Study ◽  
Rater Reliability ◽  
Coma Scale

scholarly journals Relation between fluid balance and incidence of morbidity and mortality rates in critically ill patients prospective observational study

QJM ◽  
2020 ◽  
Vol 113 (Supplement_1) ◽  
Author(s):  
M G A Gerges ◽  
H M M Elazzazi ◽  
M H S A Elsersi ◽  
S A R Mustafa ◽  
M A Saeed
Keyword(s):  
Mechanical Ventilation ◽  
Observational Study ◽  
Critically Ill ◽  
Fluid Balance ◽  
Critically Ill Patients ◽  
Prospective Observational Study ◽  
Mortality Rates ◽  
Morbidity And Mortality ◽  
University Hospitals ◽  
Cumulative Fluid Balance

Abstract Background While administration of fluid can be lifesaving, it has been suggested that the fluid accumulation after initial resuscitation and hemodynamic stabilization can contribute to potentially avoidable adverse effects and less favorable outcomes. Objective The aim of this study is to assess whether positive fluid balance in comparison with negative or even fluid balance is associated with increased morbidity and mortality rates in critically ill patients. Patients and Methods This prospective observational study was performed on 145 Patients older than 18 years admitted to intensive care units at Helwan university hospitals and Ain shams university hospitals during the period from November 2017 till May 2018. Results A total of 145 patients with an ICU mortality rate of 14.5% were enrolled. The median cumulative fluid balance of the 124 patients who survive was -110 ml (IQR -2.1-2.2 L) after the fourth day following randomization while the median cumulative fluid balance of the 21 patients who not survive was 3800 ml (IQR 1.7-5.2 L) after the fourth day in ICU. In our study critically ill patients with fluid balance more than 1.2 litres per day had higher ICU complications: increased risk of AKI, longer ICU and hospital stays, and mechanical ventilation, and fluid balance was independently associated with mortality. Conclusion In the view of this study, we concluded that:Zero fluid balance and negative fluid balance independently associated with decrease mortality and morbidity rates in critically ill patients after 4 days from admission in ICU.There was higher cumulative fluid balance in non survivors compared to survivors. Cumulative fluid balance after 4 days from admission was independently predictive of mortality in a heterogeneous group of critically ill patients.96 hour negative fluid balance in critically ill patients was associated with less length of stay at ICU and less mechanical ventilation duration.Positive fluid balance, mechanical ventilation, vasopressors, and high admission SAPS II, SOFA, APACHE II and KIDGO were significantly associated with high mortality.

scholarly journals Predictors of post-extubation stridor in patients on mechanical ventilation: a prospective observational study

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Aiko Tanaka ◽  
Akinori Uchiyama ◽  
Yu Horiguchi ◽  
Ryota Higeno ◽  
Ryota Sakaguchi ◽  
...  
Keyword(s):  
Mechanical Ventilation ◽  
Observational Study ◽  
Critically Ill ◽  
Critically Ill Patients ◽  
Prospective Observational Study ◽  
Spontaneous Breathing Trial ◽  
Leak Test ◽  
Endotracheal Suctioning ◽  
Cuff Leak ◽  
The Impact

AbstractThe cuff leak test (CLT) has been widely accepted as a simple and noninvasive method for predicting post-extubation stridor (PES). However, its accuracy and clinical impact remain uncertain. We aimed to evaluate the reliability of CLT and to assess the impact of pre-extubation variables on the incidence of PES. A prospective observational study was performed on adult critically ill patients who required mechanical ventilation for more than 24 h. Patients were extubated after the successful spontaneous breathing trial, and CLT was conducted before extubation. Of the 191 patients studied, 26 (13.6%) were deemed positive through CLT. PES developed in 19 patients (9.9%) and resulted in a higher reintubation rate (8.1% vs. 52.6%, p < 0.001) and longer intensive care unit stay (8 [4.5–14] vs. 12 [8–30.5] days, p = 0.01) than patients without PES. The incidence of PES and post-extubation outcomes were similar in patients with both positive and negative CLT results. Compared with patients without PES, patients with PES had longer durations of endotracheal intubation and required endotracheal suctioning more frequently during the 24-h period prior to extubation. After adjusting for confounding factors, frequent endotracheal suctioning more than 15 times per day was associated with an adjusted odds ratio of 2.97 (95% confidence interval, 1.01–8.77) for PES. In conclusion, frequent endotracheal suctioning before extubation was a significant PES predictor in critically ill patients. Further investigations of its impact on the incidence of PES and patient outcomes are warranted.

scholarly journals Prone positioning of patients with moderate hypoxia due to COVID-19: A multicenter pragmatic randomized trial [COVID-PRONE]

2021 ◽  
Author(s):  
Mike Fralick ◽  
Michael Colacci ◽  
Laveena Munshi ◽  
Kevin Venus ◽  
Lee Fidler ◽  
...  
Keyword(s):  
Respiratory Failure ◽  
Critically Ill ◽  
Median Time ◽  
Critically Ill Patients ◽  
Primary Outcome ◽  
Standard Of Care ◽  
High Flow ◽  
Hospital Death ◽  
Prone Positioning ◽  
High Flow Oxygen

What is already known on this topic: Prone positioning is considered standard of care for mechanically ventilated patients who have severe acute respiratory distress syndrome. Recent data suggest prone positioning is beneficial for patients with COVID-19 who are requiring high flow oxygen. It is unknown of prone positioning is beneficial for patients not on high flow oxygen. What this study adds: Prone positioning is generally not well tolerated and innovative approaches are needed to improve adherence. Clinical and physiologic outcomes were not improved with prone positioning among hypoxic but not critically ill patients hospitalized with COVID-19. Objectives: To assess the effectiveness of prone positioning to reduce the risk of death or respiratory failure in non-critically ill patients hospitalized with COVID-19 Design: Pragmatic randomized clinical trial of prone positioning of patients hospitalized with COVID-19 across 15 hospitals in Canada and the United States from May 2020 until May 2021. Settings: Patients were eligible is they had a laboratory-confirmed or a clinically highly suspected diagnosis of COVID-19, required supplemental oxygen (up to 50% fraction of inspired oxygen [FiO2]), and were able to independently prone with verbal instruction. (NCT04383613). Main Outcome Measures: The primary outcome was a composite of in-hospital death, mechanical ventilation, or worsening respiratory failure defined as requiring at least 60% FiO2 for at least 24 hours. Secondary outcomes included the change in the ratio of oxygen saturation to FiO2 (S/F ratio). Results: A total of 248 patients were included. The trial was stopped early on the basis of futility for the pre-specified primary outcome. The median time from hospital admission until randomization was 1 day, the median age of patients was 56 years (interquartile range [IQR] 45,65), 36% were female, and 90% of patients were receiving oxygen via nasal prongs at the time of randomization. The median time spent prone in the first 72 hours was 6 hours total (IQR 1.5,12.8) for the prone arm compared to 0 hours (0,2) in the control arm. The risk of the primary outcome was similar between the prone group (18 [14.3%] events) and the standard care group (17 [13.9%] events), odds ratio 0.92 (95% CI 0.44 to 1.92). The change in the S/F ratio after 72 hours was similar for patients randomized to prone compared to standard of care. Conclusion: Among hypoxic but not critically patients with COVID-19 in hospital, a multifaceted intervention to increase prone positioning did not improve outcomes. Adherence to prone positioning was poor, despite multiple efforts. Subsequent trials of prone positioning should aim to develop strategies to improve adherence to awake prone positioning.

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