scholarly journals Systematic prediction of mortality in trauma patients based on Arterial Blood Gas

2020 ◽  
Author(s):  
Zeinab Shayan ◽  
Mohammad Sabouri ◽  
Milad Shayan ◽  
Shahram Paydar
Keyword(s):  
Medical Center ◽  
Blood Gases ◽  
Trauma Patients ◽  
Blood Gas ◽  
Severe Injuries ◽  
Arterial Blood Gas ◽  
Arterial Blood ◽  
Prediction Of Mortality ◽  
Death Probability ◽  
Dynamic Relationships

Context: An effort to predict the final condition of patients is one of the purposes of many studies; since it enables the treatment system to provide the necessary facilities in the best possible time and prevent wasting time and energy as well as increasing patient mortality. Research purpose: This study was purposed to investigate the correlation between arterial blood gas (ABG) and patient mortality and design a system to predict the final patients' condition. Method: In this study, a method has been proposed to identify dynamic systems to estimate the final condition of trauma patients and predict their death or survival probability during treatment or being confined in the medical center. The proposed method by using the information of patients' arterial blood gases identifies a linear model indicating the correlation between these gases and the patients' final condition. This method is based on system identification using ARX model simulated in MATLAB and its results are presented. Results: Data of 2802 patients (365 deaths and 2437 survivors) with an average age of 37.87 years old and GCS average of 9.27 including 470 female and 2332 male patients were studied. The designed structure was tested with 62.57% accuracy to be able to predict patient mortality. Therefore, it can be stated that the proposed method has a good accuracy in predicting the final patients' condition based on dynamic analysis. Discussion and Conclusion: It is unavoidable mortality due to accidents and severe injuries. Also, it is important to predict the death probability based on data from the early hours of the onset of trauma in patients; since it takes time to collect the data of patient's condition. Therefore, it is very important to find reliable methods to measure the patients' condition and predict the mortality. The study of these methods has always been considered by physicians due to its high importance. This study has almost been able to meet physicians' need by providing a method based on the study of dynamics and dynamic relationships discussing arterial and mortal blood gases.

Arterial blood gases

2007 ◽  
pp. 319-326
Keyword(s):  
Decision Making ◽  
Pulse Oximetry ◽  
Respiratory Rate ◽  
Management Strategy ◽  
Blood Gases ◽  
Capillary Blood ◽  
Blood Gas ◽  
Arterial Blood Gas ◽  
Arterial Blood ◽  
Gas Measurements

Arterial blood gas (ABGs) analysis forms the cornerstone of emergency respiratory investigation. In many situations values obtained dictate management strategy and facilitate decision-making. It is an uncomfortable procedure for the patients and if repeated ABGs are required, consider whether less invasive measures, such as respiratory rate, pulse oximetry or capillary blood gas measurements could be used....

Successful Treatment of Experimental Neonatal Respiratory Failure Using Extracorporeal Membrane Lung Assist

1986 ◽  
Vol 9 (6) ◽  
pp. 427-432 ◽  
Author(s):  
R. Fumagalli ◽  
T. Kolobow ◽  
P. Arosio ◽  
V. Chen ◽  
D.K. Buckhold ◽  
...  
Keyword(s):  
Respiratory Failure ◽  
Pulmonary Ventilation ◽  
Blood Gases ◽  
Blood Gas ◽  
Arterial Blood Gases ◽  
Arterial Blood Gas ◽  
Membrane Lung ◽  
Arterial Blood ◽  
Long Term Survivors

A total of 44 preterm fetal lambs at great risk of developing respiratory failure were delivered by Cesarean section, and were then managed on conventional mechanical pulmonary ventilation. Fifteen animals initially fared well, and 14 of these were long term survivors. Twenty-nine other lambs showed a progressive deterioration in arterial blood gases within 30 minutes of delivery, of which 10 lambs were continued on mechanical pulmonary ventilation (20% survival), while the remaining 19 lambs were placed on an extracorporeal membrane lung respiratory assist (79% survival). Extracorporeal membrane lung bypass rapidly corrected arterial blood gas values, and permitted the use of high levels of CPAP instead of the continuation of mechanical pulmonary ventilation at high peak airway pressures. Improvement in lung function was gradual, and predictable. Early institution of extracorporeal respiratory assist using a membrane artificial lung rapidly corrected arterial blood gas values and significantly improved on neonate survival.

scholarly journals Open and Closed Endotracheal Suctioning and Arterial Blood Gas Values: A Single-Blind Crossover Randomized Clinical Trial

2015 ◽  
Vol 2015 ◽  
pp. 1-7
Author(s):  
Azam Faraji ◽  
Alireza Khatony ◽  
Gholamreza Moradi ◽  
Alireza Abdi ◽  
Mansour Rezaei
Keyword(s):  
Clinical Trial ◽  
Heart Surgery ◽  
Open Heart Surgery ◽  
Blood Gases ◽  
Open Heart ◽  
Blood Gas ◽  
Open Technique ◽  
Endotracheal Suctioning ◽  
Arterial Blood Gas ◽  
Arterial Blood

Aim. This study was aimed at comparing the effects of the open and closed suctioning techniques on the arterial blood gas values in patients undergoing open-heart surgery.Methods. In a clinical trial, we recruited 42 patients after open-heart surgery in an educational hospital. Each patient randomly underwent both open and closed suctioning. ABGs, PaO2, SaO2, PaCO2, were analyzed before and one, five, and fifteen minutes after each suctioning episode.Results. At first the pressure of oxygen in arterial blood increased; however, this increase in the open technique was greater than that of the closed system(P<0.001). The pressure of oxygen decreased five and fifteen minutes after both suctioning techniques(P<0.05). The trends of carbon dioxide variations after the open and closed techniques were upward and downward, respectively. Moreover, the decrease in the level of oxygen saturation five and fifteen minutes after the open suctioning was greater than that of the closed suctioning technique(P<0.05).  Conclusion. Arterial blood gas disturbances in the closed suctioning technique were less than those of the open technique. Therefore, to eliminate the unwanted effects of endotracheal suctioning on the arterial blood gases, the closed suctioning technique is recommended.

PREDICTION OF ARTERIAL BLOOD GAS BY TRANSCUTANEOUS O2 AND CO2 IN CRITICALLY ILL HYPERDYNAMIC TRAUMA PATIENTS

1986 ◽  
Vol 26 (7) ◽  
pp. 684
Author(s):  
Curtis D. Stokes ◽  
Steve Blevins ◽  
Joan C. Stoklosa ◽  
Kathleen Cotter ◽  
Kim C. Goh ◽  
...  
Keyword(s):  
Critically Ill ◽  
Trauma Patients ◽  
Blood Gas ◽  
Arterial Blood Gas ◽  
Arterial Blood

scholarly journals Use of artificial intelligence and neural network algorithms to predict arterial blood gas items in trauma victims

2020 ◽  
Author(s):  
Milad Shayan ◽  
Mohammad Sabouri ◽  
Leila Shayan ◽  
Shahram Paydar
Keyword(s):  
Neural Network ◽  
Blood Pressure ◽  
Cause Of Death ◽  
Blood Gases ◽  
Blood Gas ◽  
Network Algorithms ◽  
Arterial Blood Gas ◽  
Arterial Blood ◽  
The Neural Network ◽  
Golden Standard

ABSTRACTBackgroundTrauma is the third leading cause of death in the world and the first cause of death among people younger than 44 years. In traumatic patients, especially those who are injured early in the day, arterial blood gas (ABG) is considered a golden standard because it can provide physicians with important information such as detecting the extent of internal injury, especially in the lung. However, measuring these gases by laboratory methods is a time-consuming task in addition to the difficulty of sampling the patient. The equipment needed to measure these gases is also expensive, which is why most hospitals do not have this equipment. Therefore, estimating these gases without clinical trials can save the lives of traumatic patients and accelerate their recovery.MethodsIn this study, a method based on artificial neural networks for the aim of estimation and prediction of arterial blood gas is presented by collecting information about 2280 traumatic patients. In the proposed method, by training a feed-forward backpropagation neural network (FBPNN), the neural network can only predict the amount of these gases from the patient’s initial information. The proposed method has been implemented in MATLAB software, and the collected data have tested its accuracy, and its results are presented.ResultsThe results show 87.92% accuracy in predicting arterial blood gas. The predicted arterial blood gases included PH, PCO2, and HCO3, which reported accuracy of 99.06%, 80.27%, and 84.43%, respectively. Therefore, the proposed method has relatively good accuracy in predicting arterial blood gas.ConclusionsGiven that this is the first study to predict arterial blood gas using initial patient information(systolic blood pressure (SBP), diastolic blood pressure (DBP), pulse rate (PR), respiratory rate (RR), and age), and based on the results, the proposed method could be a useful tool in assisting hospital and laboratory specialists, to be used.

scholarly journals Incidence of hyperoxia in trauma patients receiving pre-hospital emergency anaesthesia: results of a 5-year retrospective analysis

2021 ◽  
Vol 29 (1) ◽  
Author(s):  
P. Leitch ◽  
A. L. Hudson ◽  
J. E. Griggs ◽  
R. Stolmeijer ◽  
R. M. Lyon ◽  
...  
Keyword(s):  
Major Trauma ◽  
Hospital Setting ◽  
Blood Gas Analysis ◽  
Gas Analysis ◽  
Trauma Patients ◽  
Blood Gas ◽  
Hospital Emergency ◽  
Arterial Blood Gas ◽  
Arterial Blood ◽  
Arterial Blood Gas Analysis

Abstract Background Previous studies have demonstrated an association between hyperoxia and increased mortality in various patient groups. Critically unwell and injured patients are routinely given high concentration oxygen in the pre-hospital phase of care. We aim to investigate the incidence of hyperoxia in major trauma patients receiving pre-hospital emergency anesthesia (PHEA) in the pre-hospital setting and determine factors that may help guide clinicians with pre-hospital oxygen administration in these patients. Methods A retrospective cohort study was performed of all patients who received PHEA by a single helicopter emergency medical service (HEMS) between 1 October 2014 and 1 May 2019 and who were subsequently transferred to one major trauma centre (MTC). Patient and treatment factors were collected from the electronic patient records of the HEMS service and the MTC. Hyperoxia was defined as a PaO2 > 16 kPA on the first arterial blood gas analysis upon arrival in the MTC. Results On arrival in the MTC, the majority of the patients (90/147, 61.2%) had severe hyperoxia, whereas 30 patients (20.4%) had mild hyperoxia and 26 patients (19.7%) had normoxia. Only 1 patient (0.7%) had hypoxia. The median PaO2 on the first arterial blood gas analysis (ABGA) after HEMS handover was 36.7 [IQR 18.5–52.2] kPa, with a range of 7.0–86.0 kPa. SpO2 pulse oximetry readings before handover were independently associated with the presence of hyperoxia. An SpO2 ≥ 97% was associated with a significantly increased odds of hyperoxia (OR 3.99 [1.58–10.08]), and had a sensitivity of 86.7% [79.1–92.4], a specificity of 37.9% [20.7–57.8], a positive predictive value of 84.5% [70.2–87.9] and a negative predictive value of 42.3% [27.4–58.7] for the presence of hyperoxemia. Conclusion Trauma patients who have undergone PHEA often have profound hyperoxemia upon arrival at hospital. In the pre-hospital setting, where arterial blood gas analysis is not readily available a titrated approach to oxygen therapy should be considered to reduce the incidence of potentially harmful tissue hyperoxia.

scholarly journals International Federation of Clinical Chemistry (IFCC): Scientific Division, Committee on pH, Blood Gases and Electrolytes:Guidelines for Transcutaneouspo2andpco2Measurement

1989 ◽  
Vol 11 (5) ◽  
pp. 235-239 ◽  
Author(s):  
P. D. Wimberley ◽  
R. W. Burnett ◽  
A. K. Covington ◽  
A. H. J. Maas ◽  
O. Mueller-Plathe ◽  
...  
Keyword(s):  
Clinical Chemistry ◽  
Newborn Infants ◽  
Blood Gases ◽  
International Federation ◽  
Blood Gas ◽  
Arterial Blood Gas ◽  
Arterial Blood ◽  
Measuring Site

This document provides guidelines for the terminology, methodology, and for the interpretation of data obtained from the use of skin (transcutaneous)po2andpco2electrodes. The transcutaneous technique has found special application in newborn infants. The causes of analytical bias with respect to arterial blood gas values, and imprecision obtained with transcutaneouspco2electrodes, are reviewed. Electrode temperatures above 44°C should not be used routinely, and, at a measuring temperature of 44°C, the measuring site should be changed at least every 4 h to avoid skin burns.

scholarly journals Interpretation of arterial blood gases

Pulse ◽  
1970 ◽  
Vol 3 (1) ◽  
pp. 15-19
Author(s):  
CP Dokwal
Keyword(s):  
Blood Gases ◽  
The Body ◽  
Respiratory Physiology ◽  
Blood Gas ◽  
Acid Base Balance ◽  
Acid Base ◽  
Arterial Blood Gas ◽  
Arterial Blood ◽  
Base Balance ◽  
Life Threatening

Measuring arterial blood gas is routinely performed in critically ill patients, and may unravel severe life-threatening acid-base disorders or hypoxemia. It provides the vital information about ventilation, oxygenation, and acid-base status in such persons. These three processes are intimately related to each other in achieving normal oxygenation and acid-balance in the body.The interpretation of arterial blood gas requires a reasonable understanding of respiratory physiology and acid-base balance in the body. Hence, in the following section, first the role of alveolar ventilation, oxygenation, and the maintenance of acid-base homeostasis have been discussed. This is followed by a step-wise approach to analyze the acid-base disorders, if present.DOI: 10.3329/pulse.v3i1.6547Pulse Vol.3(1) July 2009 p15-19

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