Nov 02, 2011 interpretation of the arterial blood gas analysis 1. The chinese university of hong kong sampling of arterial blood for blood gas analysis will yield information on. Interpreting and using the arterial blood gas analysis. Interpretation of arterial blood gases requires a systematic assessment of oxygenation, ph, standard bicarbonate. Blood can be drawn via an arterial stick from the wrist, groin, or above the elbow. These will make more sense as we go along, but i want to present them here so that you can keep them in mind as we go through this. Abg interpretation is especially important in critically ill patients. Identify the relationship between oxygen saturation and pao2 as it relates to the oxyhemoglobin dissociation curve. The radial artery on the wrist is most commonly used to obtain the sample. Test your knowledge on the webs most interactive blood gas learning tool. Pdf interpretation of arterial blood gas researchgate. Mistakes in arterial blood gas abg interpretation are common in clinical practice. The main determinants of pao 2 are the inspired oxygen concentration, alveolar gas exchange, and, to a lesser extent, tissue oxygen consumption. Arterial blood gas abg analysis use this handy reference guide to help you understand and interpret arterial blood gas results, and assess patients oxygenation, acidbase balance, respiratory function and metabolic status.
However, the more complicated and in some ways more important part of abg analysis is ph regulation. Oxygenation of blood through gas exchange in the lungs. Arterial blood gas interpretation a case study approach by paperback accessibility books library as well as its powerful features, including thousands and thousands of title from favorite author, along with the capability to read or. Carbon dioxide co2 elimination through respiration.
So, there are 3 basic steps to interpretation of an arterial blood gas. Creative ways to teach arterial blood gas interpretation. It is an essential part of diagnosing and managing a patients oxygenation status and acidbase balance. It is possible to have a mixed respiratory and metabolic disorder that makes interpretation of an arterial blood gas result difficult. An arterial blood gas, or abg for short, is a test that measures the blood levels of oxygen pao2, carbon dioxide paco2, and acidbase balance ph in the body.
Blood gas and critical care analyte analysis chapter objectives 1. As you struggle to listen to the machine company representative talking about cleaning the machine. Practice rational testing interpreting arterial blood gas results. Explain the types of errors that can occur with blood gas analysis. Components of the arterial blood gas the arterial blood gas provides the following values. Your doctor may run a blood gas analysis or arterial blood gas abg test if you are showing the signs of an oxygen, carbon dioxide, or ph imbalance such as confusion or difficulty breathing. Arterial blood gases abg results reflect underlying pathology and interpretation of the results are often compounded by ongoing disease processes and clinical interventions. Download arterial blood gas interpretation pdf download. The results of abg testing will often influence the treatment that patients receive. Arterial blood gas measurements tensions and concentrations of o 2 and co 2 constitute a mainstay of clinical care to assess the degree of pulmonary gas exchange abnormality.
Arterial blood gas interpretation felicia ratnaraj internal medicine pgy 3. There are many creative ways to teach arterial blood gas interpretation. Interpret the results of various arterial blood gas samples. Arterial blood gases you are a new staff member working in the emergency department ed during your induction you are introduced to the practical workings of the point of care arterial blood gas abg machine in the ed. Explains the basic physiological ph abnormalities and more to understand. The following sixstep process helps ensure a complete interpretation of every abg. Download arterial blood gas interpretation pdf list price. Identify normal arterial blood gas values and interpret the meaning of abnormal values. Indications, interpretations, and clinical applications m etabolic derangements and respiratory distress are common presenting problems in emergency medicine. Interpreting an arterial blood gas abg is a crucial skill for physicians, nurses, respiratory therapists, and other health care personnel. Interpretation of the arterial blood gas emergencypedia. List the types of samples that can be analyzed for blood gas and analyte concentrations. However, the femoral artery and brachial artery can be used if necessary.
How to interpret arterial blood gas results correspondence. It is simple, perhaps simplistic, but it will hopefully arm the reader with the tools and confidence to. Arterial oxygen tension pao 2 is the partial pressure of oxygen in arterial blood. Apr 03, 2020 an arterial blood gas requires the nurse to collect a small sample of blood generally, a full 1 ml. Monitoring of acidbase balance is done by testing patients arterial blood gases abgs. Pdf, epubs, mobi, emagazines, epaper, ejournal and more. Weve created this guide, which aims to provide a structured approach to abg interpretation whilst also increasing your understanding of each results relevance.
An arterial blood gas abg analysis can tell you about a patients oxygenation, acidbase balance, pulmonary function, and metabolic status. The first step is to look at each of the three main values ph, paco2, and hco3 or bicarb and determine if they are acidosis, alkalosis, or. This indispensable tool helps you assess and monitor critically ill patients in the icu or other critical care settings. Abg interpretation abg analysis arterial blood gases acidbase balance. Interpretation of thearterial blood gas analysis dm seminar dr. They may help make a diagnosis, indicate the severity of a condition and help to assess treatment. Arterial blood gas interpretation arterial blood gas analysis is an essential part of diagnosing and managing a patients oxygenation status and acid base balance.
The bodys regulation of ph is influenced by both the respiratory and the. You take a blood specimen for analysis of arterial blood gases for rapid biochemical. A case study approach is specially for all the emergency medicine rotatorsexplains all the essentials from basics to the most difficult casesnow you can download the book. Arterial blood gas interpretation demystified physician assistant. Body temperature can also affect arterial blood gas tensions. The most important points when assessing a patient are the history, examination and basic observations. Overview of thediscussion basics of acidbase balance. It explains each component in turn followed by clinical examples to work through. When one thinks of abg analysis, oxygenation may come to mind first.
Arterial blood gases abgs provide a wealth of information for the differential diagnosis of many respiratory and metabolic diseases, but how can nurses use this information as part of the physical assessment and reporting of key events. Arterial blood gas abg analysis is an essential part of diagnosing and managing a patients oxygenation status and acidbase balance. Arterial blood gas analysis dr abdullah pg 2 medicine amu aligarh 2. Download interpretation of the arterial blood gas book pdf free download link or read online here in pdf.
The usefulness of this diagnostic tool is dependent on being able to correctly interpret the results. Patients are often required to be checked for arterial blood gas analysis to find what exactly is happening in the body of patients system. Interpretation of the arterial blood gas pdf book manual. Understanding arterial blood gases nursing case studies. This article illustrates the use of the stepwise approach, tables, figures, case studies, illustrations, computerbased learning modules, and the tictactoe approach. Arterial blood gas abg interpretation for medical students.
Its a test that is used to assess how well oxygen is being distributed throughout the body and how well carbon dioxide is being removed. The arterial blood gas abg measures the acidbase balance ph and oxygenation of an arterial blood sample. The present article is an attempt for the simplified approach for the bedside interpretation of abg. Arterial blood gases indications and interpretation. But it is often encountered that many students dont know how to read abg, and thats why we are providing arterial blood gas. Arterial blood gas abg interpretation for medical students, osces and mrcp paces this section presents how to interpret arterial blood gases. Jan 26, 2015 arterial blood gases abgs are an important routine investigation to monitor the acidbase balance of patients. Arterial blood gas analysis and acidbase balance disorders. Oct 05, 2019 arterial blood gas analysis abg, is a test that measures the amount of oxygen o2 and carbon dioxide co2 in the blood, as well as the acidity ph of the blood.
This is relevant in febrile or hypothermic patients, so body temperature should be recorded at the time of collection. Arterial blood gas abg interpretation is something many medical students find difficult to grasp weve been there. Interpretation of arterial blood gas pubmed central pmc. The interpretation of arterial blood gases australian.
Overview abg sampling interpretation of abg gas exchange acid base status. However, the factors that dictate arterial blood gas values are often multifactorial and complex, with six. Therefore, a basic understanding of how to interpret abg results can be useful for pharmacists to help them clarify the clinical picture. Discuss causes and treatments of respiratory acidosis, respiratory alkalosis, metabolic. Read online interpretation of the arterial blood gas book pdf free download link book now. The process of analysis and monitoring of arterial blood gas abg is an essential part of diagnosing and managing the oxygenation status and acidbase balance of the highrisk patients, as well. The process of analysis and monitoring of arterial blood gas abg is an essential part of diagnosing and managing the oxygenation status and. The following is a simplified explanation of abgs, including a practical method for interpreting results. All books are in clear copy here, and all files are secure so dont worry about it.