Decentralized safety concept for closed-loop controlled intensive care

2017 ◽  
Vol 62 (2) ◽  
Author(s):  
Jan Kühn ◽  
Christian Brendle ◽  
André Stollenwerk ◽  
Martin Schweigler ◽  
Stefan Kowalewski ◽  
...  
Keyword(s):  
Intensive Care ◽  
Blood Circulation ◽  
Distress Syndrome ◽  
Markov Models ◽  
Animal Experiments ◽  
Pressure Sensors ◽  
Safety Concept ◽  
Sensors And Actuators ◽  
Bubble Detection ◽  
Extracorporeal Blood Circulation

Abstract:This paper presents a decentralized safety concept for networked intensive care setups, for which a decentralized network of sensors and actuators is realized by embedded microcontroller nodes. It is evaluated for up to eleven medical devices in a setup for automated acute respiratory distress syndrome (ARDS) therapy. In this contribution we highlight a blood pump supervision as exemplary safety measure, which allows a reliable bubble detection in an extracorporeal blood circulation. The approach is validated with data of animal experiments including 35 bubbles with a size between 0.05 and 0.3 ml. All 18 bubbles with a size down to 0.15 ml are successfully detected. By using hidden Markov models (HMMs) as statistical method the number of necessary sensors can be reduced by two pressure sensors.

Bestimmung des zerebralen Blutflusses mittels des 81 Rb/81 mKr-Generatorsystems

1990 ◽  
Vol 29 (01) ◽  
pp. 7-12 ◽  
Author(s):  
J. Bialy ◽  
F.-J. Hans ◽  
E. Oberhausen ◽  
W.J. Peters ◽  
M. Schmitt ◽  
...  
Keyword(s):  
Blood Flow ◽  
Cerebral Blood Flow ◽  
Blood Circulation ◽  
Semiconductor Device ◽  
Animal Experiments ◽  
Initial Value ◽  
Brain Arteries ◽  
Sufficient Concentration ◽  
Static Quantity

A method is being developed which not only measures cerebral blood flow as a static quantity but also its changes with time. For that purpose a semiconductor device ascertains the proportion of intracerebral81 Rb and 81mKr activities. By opening the haemato-encephalic barrier in animal experiments a sufficient concentration of intracerebral81 Rb could be attained and the modified blood circulation after step-wise ligature of all brain arteries brought into relation to the corresponding Rb/Kr quotient. Over the range from undisturbed to completely interrupted cerebral blood flow this quotient varied up to 25% of its initial value.

Pronation Technique in ARDS Patients

ABOUTOPEN ◽  
2020 ◽  
Vol 7 (1) ◽  
pp. 21-23
Author(s):  
Raffaele Di Fenza ◽  
Hedwige Gay ◽  
Martina Favarato ◽  
Isabella Fontana ◽  
Roberto Fumagalli
Keyword(s):  
Intensive Care ◽  
Intensive Care Units ◽  
Distress Syndrome ◽  
Daily Practice ◽  
Volume Distribution ◽  
Intensive Care Unit Staff ◽  
Safe Technique ◽  
Fraction Of Inspired Oxygen ◽  
And Diffusion ◽  
Inspired Oxygen

In severe acute respiratory distress syndrome (ARDS), characterized by the ratio of arterial partial pressure of oxygen over fraction of inspired oxygen (P/F) less than 150 mm Hg, pronation cycles are the only intervention that showed improved survival, in combination with protective ventilation. The physiological advantages of performing pronation cycles, such as the improvement of oxygenation, better tidal volume distribution with increased involvement of dorsal regions, and easier drainage of secretions, overcome the possible complications, that is, endotracheal tube occlusion or misplacement, pressure ulcers, and brachial plexus injury. However, the incidence of complications is dramatically lower in intensive care units with expertise, adopting prone positioning in daily practice. In this video we are proposing step by step an easy and ergonomic technique to perform pronation maneuvers in patients with severe ARDS. Recent literature suggests that a high percentage of these patients are treated without undergoing pronation cycles. The main purpose of this video is to help increase the number of intensive care units worldwide commonly performing pronation cycles in patients that have indications to be pronated, in order to decrease healthcare burden and costs directly caused by ARDS. Proper intensive care unit staff training is fundamental in minimizing the risks associated with the maneuver for both patients and operators; and diffusion of a safe technique encouraging the operators is the second main purpose of this video.

scholarly journals Cardiac biomarkers in acute respiratory distress syndrome: a systematic review and meta-analysis

2021 ◽  
Vol 9 (1) ◽  
Author(s):  
Dilip Jayasimhan ◽  
Simon Foster ◽  
Catherina L. Chang ◽  
Robert J. Hancox
Keyword(s):  
Systematic Review ◽  
Acute Respiratory Distress Syndrome ◽  
Intensive Care ◽  
Cardiac Dysfunction ◽  
Distress Syndrome ◽  
Troponin I ◽  
Meta Analysis ◽  
Cardiac Injury ◽  
Cardiac Biomarkers ◽  
Risk Of Death

Abstract Background Acute respiratory distress syndrome (ARDS) is a leading cause of morbidity and mortality in the intensive care unit. Biochemical markers of cardiac dysfunction are associated with high mortality in many respiratory conditions. The aim of this systematic review is to examine the link between elevated biomarkers of cardiac dysfunction in ARDS and mortality. Methods A systematic review of MEDLINE, EMBASE, Web of Science and CENTRAL databases was performed. We included studies of adult intensive care patients with ARDS that reported the risk of death in relation to a measured biomarker of cardiac dysfunction. The primary outcome of interest was mortality up to 60 days. A random-effects model was used for pooled estimates. Funnel-plot inspection was done to evaluate publication bias; Cochrane chi-square tests and I2 tests were used to assess heterogeneity. Results Twenty-two studies were included in the systematic review and 18 in the meta-analysis. Biomarkers of cardiac stretch included NT-ProBNP (nine studies) and BNP (six studies). Biomarkers of cardiac injury included Troponin-T (two studies), Troponin-I (one study) and High-Sensitivity-Troponin-I (three studies). Three studies assessed multiple cardiac biomarkers. High levels of NT-proBNP and BNP were associated with a higher risk of death up to 60 days (unadjusted OR 8.98; CI 4.15-19.43; p<0.00001). This association persisted after adjustment for age and illness severity. Biomarkers of cardiac injury were also associated with higher mortality, but this association was not statistically significant (unadjusted OR 2.21; CI 0.94-5.16; p= 0.07). Conclusion Biomarkers of cardiac stretch are associated with increased mortality in ARDS.

scholarly journals Collective aeromedical evacuations of SARS-CoV-2-related ARDS patients in a military tactical plane: a retrospective descriptive study

2021 ◽  
pp. bmjmilitary-2021-001876
Author(s):  
Thibault Martinez ◽  
K Simon ◽  
L Lely ◽  
C Nguyen Dac ◽  
M Lefevre ◽  
...  
Keyword(s):  
Intensive Care Unit ◽  
Acute Respiratory Distress Syndrome ◽  
Intensive Care ◽  
Respiratory Distress Syndrome ◽  
Selection Criteria ◽  
Distress Syndrome ◽  
Descriptive Study ◽  
Military Aircraft ◽  
Life Threatening ◽  
The Military

After the appearance of the COVID-19 pandemic in France, MEROPE system was created to transform the military tactical ATLAS A400M aircraft into a flying intensive care unit. Collective aeromedical evacuations (aero-MEDEVAC) of patients suffering from SARS-CoV-2-related acute respiratory distress syndrome was performed from June to December 2020. A total of 22 patients were transported during seven missions. All aero-MEDEVAC was performed in safe conditions for patients and crew. No life-threatening conditions occurred during flight. Biohazard controls were applied according to French guidelines and prevented crew contamination. Thanks to rigorous selection criteria and continuous in-flight medical care, the safe transportation of these patients was possible. To the best of our knowledge, this is the first description of collective aero-MEDEVAC of these kinds of patients using a tactical military aircraft. We here describe the patient’s characteristics and the flight’s challenges.

Burning of a Neonate due to a Pulse Oximeter: Arterial Saturation Monitoring

PEDIATRICS ◽  
1992 ◽  
Vol 89 (1) ◽  
pp. 154-155
Author(s):  
DANIEL B. SOBEL
Keyword(s):  
Mechanical Ventilation ◽  
Intensive Care ◽  
Case Report ◽  
Pulse Oximeter ◽  
Distress Syndrome ◽  
Pediatric Intensive Care ◽  
Supplemental Oxygen ◽  
Premature Neonate ◽  
Skin Development ◽  
Pulse Oximeter Probe

Monitoring of arterial hemoglobin saturations by pulse oximetry has become a fixture in neonatal and pediatric intensive care units, operating rooms, and in other hospital settings. Use with extremely premature neonates is especially beneficial because of their immature skin development and vulnerability to topical damage—whether due to chemicals, tape, or temperature.1,2 This report documents a case of a burn due to a presumed shorting of a pulse oximeter probe cable in an extremely premature neonate. CASE REPORT The patient was a 690-g Hispanic female neonate born prematurely at approximately 25 weeks' gestation with respiratory distress syndrome requiring mechanical ventilation and supplemental oxygen.

Respiratory distress syndrome in neonates with extremely low body weight: non-invasive respiratory therapy in the early neonatal period

2020 ◽  
Vol 15 (6) ◽  
pp. 94-102
Author(s):  
O.V. Zavyalov ◽  
◽  
V.V. Marenkov ◽  
A.A. Dementyev ◽  
I.N. Pasechnik ◽  
...  
Keyword(s):  
Intensive Care Unit ◽  
Body Weight ◽  
Intensive Care ◽  
Respiratory Distress Syndrome ◽  
Respiratory Distress ◽  
Distress Syndrome ◽  
Neonatal Period ◽  
Respiratory Therapy ◽  
Non Invasive ◽  
Early Neonatal Period

The aim of this study was to evaluate the efficacy of non-invasive respiratory therapy using the method of dual positive airway pressure (DuoPAP) via nasal prongs performed in the intensive care unit and neonatal intensive care unit in premature newborns with extremely low body weight and respiratory distress syndrome in the early neonatal period. We conducted a retrospective analysis of 55 medical records of premature newborns treated in the intensive care unit of the Perinatal Center at S.S. Yudin City Clinical Hospital during the first 7 days of their life. We included patients treated between January 2018 and December 2019. All newborns had extremely low body weight (850 ± 149 g); mean gestational age was 28 ± 4 weeks; Apgar score at the first minute of life varied between 3 and 6; Silverman Anderson score (severity of respiratory disorders) was between 3 and 5 s. Standard examination was performed in accordance with current protocols developed by Russian and foreign specialists in neonatal medicine. A specially developed clinical protocol of the study was approved by the local ethics committee. Study participants were divided into 3 groups according to their type of spontaneous respiratory efforts, target level of preductal saturation, and Silverman Anderson score. Patients in Group I received synchronized intermittent mandatory ventilation (SIMV); patients in Group II received ventilation using DuoPAP via nasal prongs (if it was ineffective, we considered SIMV via tube); patients in group III received ventilation using DuoPAP only. In this study, we have identified indications and contraindications for initial and prolonged respiratory therapy with DuoPAP and developed main practical recommendations for effective and safe application of DuoPAP. The efficacy and safety of non-invasive respiratory therapy with DuoPAP via nasal prongs in extremely premature infants with respiratory distress syndrome in the early neonatal period is primarily determined by the newborn’s readiness for active spontaneous and productive respiratory movements, but not only by the compensated parameters of the acid-base state and gas composition of the capillary blood. The assessment of feasibility and limitations of non-invasive respiratory therapy with DuoPAP is an important step towards developing a clinical protocol for respiratory therapy in the early neonatal period in a neonatal intensive care unit; it will help to reduce the use of invasive lung ventilation. Key words: premature newborns, non-invasive respiratory therapy, respiratory distress syndrome, extremely low body weight

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