scholarly journals Influence of extracorporeal membrane oxygenation on serum microRNA expression

2019 ◽  
Vol 47 (12) ◽  
pp. 6109-6119
Author(s):  
M. Scettri ◽  
H. Seeba ◽  
D. L. Staudacher ◽  
S. Robinson ◽  
D. Stallmann ◽  
...  
Keyword(s):  
Extracorporeal Membrane Oxygenation ◽  
Real Time ◽  
Underlying Disease ◽  
Real Time Quantitative Pcr ◽  
Membrane Oxygenation ◽  
Serum Microrna ◽  
Clinical Biomarkers ◽  
Differentially Expressed Mirnas ◽  
Before And After ◽  
Medical Intensive Care

Objective To date, no biomarkers have been established to predict haematological complications and outcomes of extracorporeal membrane oxygenation (ECMO). The aim of this study was to investigate the expression of a panel of microRNAs (miRNAs), which are promising biomarkers in many clinical fields, in patients before and after initiating ECMO. Methods Serum miRNA levels from 14 patients hospitalized for acute respiratory failure and supported with ECMO in our medical intensive care unit were analysed before and 24 hours after ECMO. In total, 179 serum-enriched miRNAs were profiled by using a real-time PCR panel. For validation, differentially expressed miRNAs were individually quantified with conventional real-time quantitative PCR at 0, 24, and 72 hours. Results Under ECMO support, platelet count significantly decreased by 65 × 103/µL (25th percentile = 154.3 × 103/µL; 75th percentile = 33 × 103/µL). Expression of the 179 miRNAs investigated in this study did not change significantly throughout the observational period. Conclusions According to our data, the expression of serum miRNAs was not altered by ECMO therapy itself. We conclude that ECMO does not limit the application of miRNAs as specific clinical biomarkers for the patients’ underlying disease.

scholarly journals A Real‐time Color Doppler Marker for Echocardiographic Guidance of an Acoustically Active Extracorporeal Membrane Oxygenation Cannula

2018 ◽  
Vol 38 (7) ◽  
pp. 1875-1885 ◽  
Author(s):  
Marek Belohlavek ◽  
Minako Katayama ◽  
Veronica V. Vaitkus ◽  
Viksit Kumar ◽  
Mostafa Fatemi ◽  
...  
Keyword(s):  
Extracorporeal Membrane Oxygenation ◽  
Real Time ◽  
Color Doppler ◽  
Membrane Oxygenation

scholarly journals Effects of Extracorporeal Membrane Oxygenation Initiation on Oxygenation and Pulmonary Opacities

2021 ◽  
Vol 7 (1) ◽  
pp. 6-13
Author(s):  
Kiran Batra ◽  
Manish Mohanka ◽  
Srinivas Bollineni ◽  
Vaidehi Kaza ◽  
Prabhakar Rajiah ◽  
...  
Keyword(s):  
Extracorporeal Membrane Oxygenation ◽  
P Value ◽  
Limited Data ◽  
Hospital Survival ◽  
Membrane Oxygenation ◽  
Pulmonary Physiology ◽  
Before And After ◽  
Laboratory Variables ◽  
The Difference ◽  
The Impact

Abstract Introduction There is limited data on the impact of extracorporeal membrane oxygenation (ECMO) on pulmonary physiology and imaging in adult patients. The current study sought to evaluate the serial changes in oxygenation and pulmonary opacities after ECMO initiation. Methods Records of patients started on veno-venous, or veno-arterial ECMO were reviewed (n=33; mean (SD): age 50(16) years; Male: Female 20:13). Clinical and laboratory variables before and after ECMO, including daily PaO2 to FiO2 ratio (PFR), were recorded. Daily chest radiographs (CXR) were prospectively appraised in a blinded fashion and scored for the extent and severity of opacities using an objective scoring system. Results ECMO was associated with impaired oxygenation as reflected by the drop in median PFR from 101 (interquartile range, IQR: 63-151) at the initiation of ECMO to a post-ECMO trough of 74 (IQR: 56-98) on post-ECMO day 5. However, the difference was not statistically significant. The appraisal of daily CXR revealed progressively worsening opacities, as reflected by a significant increase in the opacity score (Wilk’s Lambda statistic 7.59, p=0.001). During the post-ECMO period, a >10% increase in the opacity score was recorded in 93.9% of patients. There was a negative association between PFR and opacity scores, with an average one-unit decrease in the PFR corresponding to a +0.010 increase in the opacity score (95% confidence interval: 0.002 to 0.019, p-value=0.0162). The median opacity score on each day after ECMO initiation remained significantly higher than the pre-ECMO score. The most significant increase in the opacity score (9, IQR: -8 to 16) was noted on radiographs between pre-ECMO and forty-eight hours post-ECMO. The severity of deteriorating oxygenation or pulmonary opacities was not associated with hospital survival. Conclusions The use of ECMO is associated with an increase in bilateral opacities and a deterioration in oxygenation that starts early and peaks around 48 hours after ECMO initiation.

Inhaled Nitric Oxide Trials: "Vive la différence!"

PEDIATRICS ◽  
1996 ◽  
Vol 97 (3) ◽  
pp. 438-438
Author(s):  
DENNIS DAVIDSON
Keyword(s):  
Nitric Oxide ◽  
Clinical Trials ◽  
Pulmonary Hypertension ◽  
Optimal Design ◽  
Extracorporeal Membrane Oxygenation ◽  
Rescue Therapy ◽  
Underlying Disease ◽  
Inhaled Nitric Oxide ◽  
Persistent Pulmonary Hypertension ◽  
Membrane Oxygenation

The commentary by Drs Abman and Kinsella entitled "Inhaled Nitric Oxide for Persistent Pulmonary Hypertension of the Newborn: The Physiology Matters!" provides one important and valid viewpoint concerning the optimal design of clinical trials in this area of neonatology. The approach that they advocate involves individualized and meticulous care of persistent pulmonary hypertension of the newborn (PPHN) patients depending on their underlying disease, using whatever conventional or rescue therapy (before extracorporeal membrane oxygenation [ECMO] is needed to support the patient, while testing the efficacy of inhaled nitric oxide (I-NO).

Curriculum to Introduce Critical Care Nurses to Extracorporeal Membrane Oxygenation

2020 ◽  
Vol 29 (4) ◽  
pp. 262-269
Author(s):  
Whitney D. Gannon ◽  
Lynne Craig ◽  
Lindsey Netzel ◽  
Carmen Mauldin ◽  
Ashley Troutt ◽  
...  
Keyword(s):  
Critical Care ◽  
Extracorporeal Membrane Oxygenation ◽  
Reference Group ◽  
High Volume ◽  
Critical Care Nurses ◽  
Care Nurse ◽  
Membrane Oxygenation ◽  
Written Examination ◽  
Advanced User ◽  
Before And After

Background Despite the growing use of extracorporeal membrane oxygenation (ECMO) in intensive care units (ICUs), no standardized ECMO training pathways are available for ECMO-naive critical care nurses. Objectives To evaluate a critical care nurse ECMO curriculum that may be reproducible across institutions. Methods An ECMO curriculum consisting of a basic safety course and an advanced user course was designed for critical care nurses. Courses incorporated didactic and simulation components, written knowledge examinations, and electronic modules. Differences in examination scores before and after each course for the overall cohort and for participants from each ICU type were analyzed with t tests or nonparametric equality-of-medians tests. Differences in postcourse scores across ICU types were examined with multiple linear regression. Results Critical care nurses new to ECMO (n = 301) from various ICU types participated in the basic safety course; 107 nurses also participated in the advanced user course. Examination scores improved after completion of both courses for overall cohorts (P < .001 in all analyses). Median (interquartile range) individual score improvements were 23.1% (15.4%-38.5%) for the basic safety course and 8.4% (0%-16.7%) for the advanced user course. Postcourse written examination scores stratified by ICU type, compared with the medical ICU/cardiovascular ICU group (reference group), differed only in the neurovascular ICU group for the basic safety course (percent score difference, −3.0; 95% CI, −5.3 to −0.8; P = .01). Conclusions Implementation of an ECMO curriculum for a high volume of critical care nurses is feasible and effective.

Cardiac dimensions during extracorporeal membrane oxygenation

2005 ◽  
Vol 15 (4) ◽  
pp. 373-378 ◽  
Author(s):  
Ronald B. Tanke ◽  
Otto Daniëls ◽  
Arno F. van Heijst ◽  
Henk van Lier ◽  
Cees Festen
Keyword(s):  
Left Ventricle ◽  
Extracorporeal Membrane Oxygenation ◽  
Left Ventricular ◽  
Loading Conditions ◽  
Volume Loading ◽  
Membrane Oxygenation ◽  
Arterial Duct ◽  
Before And After ◽  
Fractional Shortening

Our aim was to analyze left ventricular fractional shortening during extracorporeal membrane oxygenation under the influence of changing volume loading conditions induced by a ductal left-to-right shunt. In all patients, the fractional shortening was observed using echocardiography before, during, and after bypass, irrespective of the presence or absence of the ductal left-to-right shunt. During membrane oxygenation, there was a significant decrease in fractional shortening (p less than 0.001), with no difference before and after membrane oxygenation. A greater decrease in fractional shortening was observed in the group with a ductal left-to-right shunt when compared to patients lacking the ductal shunt (p less than 0.006). The diastolic diameter of the left ventricle also increased significantly during the membrane oxygenation in those patients with left-to-right ductal shunting. Moreover, the patients with left-to-right shunting showed a very severe decreased fractional shortening, lower than 10 per cent, with significantly greater frequency (p less than 0.05) during the course of membrane oxygenation. Conclusion: An important decrease in left ventricular fractional shortening is observed during veno-arterial extracorporeal membrane oxygenation. Left-to-right shunting during bypass, as seen in the patients with patency of the arterial duct, increases the loading conditions on the left ventricle, and produces a significant increase in left ventricular diastolic dimensions. Despite the effects of volume loading produced by the ductal shunt during bypass, the decrease in fractional shortening is significantly more pronounced for these patients. Therefore, during membrane oxygenation the volume loading produced by the ductal shunt is unable to prevent a decrease in left ventricular fractional shortening.

scholarly journals Microcirculatory Response to Changes in Venoarterial Extracorporeal Membrane Oxygenation Pump Flow: A Prospective Observational Study

2021 ◽  
Vol 8 ◽  
Author(s):  
Tzu-Jung Wei ◽  
Chih-Hsien Wang ◽  
Wing-Sum Chan ◽  
Chi-Hsiang Huang ◽  
Chien-Heng Lai ◽  
...  
Keyword(s):  
Extracorporeal Membrane Oxygenation ◽  
Treatment Plan ◽  
Sublingual Microcirculation ◽  
Membrane Oxygenation ◽  
Pump Flow ◽  
Clinical Events ◽  
Venoarterial Extracorporeal Membrane Oxygenation ◽  
Before And After ◽  
Group A ◽  
Va Ecmo

Background: Venoarterial extracorporeal membrane oxygenation (VA-ECMO) pump flow is crucial for maintaining organ perfusion in patients with cardiogenic shock, but VA-ECMO pump flow optimization remains as a clinical challenge. This study aimed to investigate the response of sublingual microcirculation to changes in VA-ECMO pump flow.Methods: Sublingual microcirculation was measured before and after changing VA-ECMO pump flow according to the treatment plan of ECMO team within 24 h and at 24-48 h after VA-ECMO placement. In clinical events of increasing VA-ECMO pump flow, those events with increased perfused vessel density (PVD) were grouped into group A, and the others were grouped into group B. In clinical events of decreasing VA-ECMO pump flow, those events with increased PVD were grouped into group C, and the others were grouped into group D.Results: Increased PVD was observed in 60% (95% CI, 38.5–81.5%) of the events with increasing VA-ECMO pump flow. The probability of increasing PVD after increasing VA-ECMO pump flow were higher in the events with a PVD < 15 mm/mm2 at baseline than those with a PVD ≥ 15 mm/mm2 [100% (95% CI, 54.1–100%) vs. 42.9% (95% CI, 17.7–71.1%), P = 0.042]. Other microcirculatory and hemodynamic parameters at baseline did not differ significantly between group A and B or between group C and D.Conclusion: This study revealed contradictory and non-contradictory responses of sublingual microcirculation to changes in VA-ECMO pump flow. Tandem measurements of microcirculation before and after changing VA-ECMO pump flow may help to ensure a good microcirculation.

scholarly journals Chlorhexidine bathing of the exposed circuits in extracorporeal membrane oxygenation: an uncontrolled before-and-after study

Critical Care ◽  
2020 ◽  
Vol 24 (1) ◽  
Author(s):  
Hye Ju Yeo ◽  
Dohyung Kim ◽  
Mihyang Ha ◽  
Hyung Gon Je ◽  
Jeong Soo Kim ◽  
...  
Keyword(s):  
Extracorporeal Membrane Oxygenation ◽  
Blood Stream Infection ◽  
Scientific Evidence ◽  
Blood Stream ◽  
Microbial Colonization ◽  
Controlled Study ◽  
Intervention Period ◽  
Membrane Oxygenation ◽  
Before And After ◽  
Before And After Study

Abstract Background Although the prevention of extracorporeal membrane oxygenation (ECMO) catheter-related infection is crucial, scientific evidence regarding best practices are still lacking. Methods We conducted an uncontrolled before-and-after study to test whether the introduction of disinfection with 2% chlorhexidine gluconate (CHG) and 70% isopropyl alcohol (IPA) of the exposed circuits and hub in patients treated with ECMO would affect the rate of blood stream infection (BSI) and microbial colonization of the ECMO catheter. We compared the microbiological and clinical data before and after the intervention. Results A total of 1740 ECMO catheter days in 192 patients were studied. These were divided into 855 ECMO catheter days in 96 patients before and 885 ECMO catheter days in 96 patients during the intervention. The rates of BSI were significantly decreased during the intervention period at 11.7/1000 ECMO catheter days before vs. 2.3/1000 ECMO catheter days during (difference 9.4, 95% confidence interval (CI) 1.5–17.3, p = 0.019). Furthermore, the colonization of the ECMO catheter was similarly significantly reduced during the intervention period at 10.5/1000 ECMO catheter days before vs. 2.3/1000 ECMO catheter days during intervention (difference 8.3, 95% CI 0.7–15.8, p = 0.032). Hospital mortality (41.7% vs. 24%, p = 0.009) and sepsis-related death (17.7% vs. 6.3%, p = 0.014) were also significantly decreased during intervention. Conclusion Extensive disinfection of exposed ECMO circuits and hub with 2% CHG/IPA was associated with a reduction in both BSI and microbial colonization of ECMO catheters. A further randomized controlled study is required to verify these results. Trial registration KCT 0004431

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