Blood gases interpretation pdf

Interpretation of arterial blood gas pubmed central pmc. Indications, interpretations, and clinical applications m etabolic derangements and respiratory distress are common presenting problems in emergency medicine. Similar to your so2, however fcohb and fmethb are not included as they are not ca pable of carrying oxygen. Creative ways to teach arterial blood gas interpretation. An abg is the most accurate representation of a patients clinical status and correct interpretation can lead to quicker and more accurate changes in the. Arterial blood gas interpretation the purpose of this selfleaming packet is to educate patient care providers on the basic principles of acidbase balance as well as to provide a systematic approach to the interpretation of arterial blood gases. The usefulness of this diagnostic tool is dependent on being. O determination of pao2x pao2 is dependant upon age, fio2, patmy as age the expected pao2ge pao2 109 0. An easy step by step guide to understanding the abg. Interpretation of arterial blood gas article pdf available in indian journal of critical care medicine 142. Arterial blood gasses, or abgs, may be among the most complex and confusing parts of nursing practice. Blood gas analysis can give the clinician essential information on the respiratory and metabolic status of a patient. Abg quick interpretation parameter acidosis normal alkalosis reflects ph 7. Fortunately, there are some easy ways to remember how to decipher these important lab results.

If it outside range, then it is uncompensated or partially compensated. Interpreting an arterial blood gas abg is a crucial skill for physicians, nurses, respiratory. Interpretation of arterial blood gases abgs david a. Website to use for online analysis of blood gas values. In addition, they provide a vital insight into a patients status that will ultimately influence how a case is. These measurements should be considered with the patients clinical features table 1. As pao2 increases, more oxygen diffuses into the red blood cells, where it combines with hemoglobin to form oxyhemoglobin. Abg interpretation a guide to understanding abgs geeky. The most important points when assessing a patient are the history, examination and basic observations. Arterial blood gases abg can be difficult and confusing to understand at first. Interpretation of arterial blood gases requires a systematic assessment of.

Interpretation of the arterial blood gas selflearning packet see swift for list of qualifying boards for continuing education hours. Arterial blood gas interpretation demystified physician assistant. This is a nonfinal version of an article published in final form in. Arterial blood gas abg interpretation for medical students, osces and mrcp paces this section presents how to interpret arterial blood gases. Understanding the underlying pathophysiology associated with a patients condition and. Arterial blood gases abg results reflect underlying pathology and interpretation of the results are often compounded by ongoing disease processes and clinical interventions. Interpretation of arterial blood gases requires a systematic assessment of oxygenation, ph, standard bicarbonate shco 3. The pf ratio ratio between the pao 2 and the inspired oxygen concentration expressed as a fraction is a useful guide to the presence and severity of impaired.

Body will not overcompensate when it comes to acidbase balance so. Although often considered difficult or confusing to interpret due to the abundance of chemistry, with a little practice blood gases become easy and quick to interpret. Weve created this guide, which aims to provide a structured approach to abg interpretation whilst also increasing your understanding of each results relevance. Following are the steps one should follow when reading the arterial blood gas and interpreting the values simultaneously. Acidbase balance overview the ph is a measurement of the acidity or alkalinity of the blood. Abg interpretation abg analysis arterial blood gases acidbase balance. Arterial blood gas analysis is an essential part of diagnosing and managing a patients oxygenation status and acidbase balance. Arterial blood gas abg analysis is an essential part of diagnosing and managing a patients oxygenation status and acidbase balance. Abgs made easy for nurses w tic tac toe method for arterial blood gas interpretation. Interpreting abgs arterial blood gases made easy ausmed. When the ph is normal, it will be fully compensated.

However, its a crucial skill for nurses, physicians, respiratory therapists, and nursing students to learn. The usefulness of this diagnostic tool is dependent on being able to correctly interpret the results. Oxygen content of blood is affected by level and affinity state of hemoglobin. The usefulness of this diagnostic tool is dependent. Without knowing them, your patient could easily go. Blood urea nitrogen bun 620 mgdl major nitrogencontaining end product of protein metabolism lactate 4. The main determinants of pao 2 are the inspired oxygen concentration, alveolar gas exchange, and, to a lesser extent, tissue oxygen.

Arterial blood gas interpretation, abg analysis, rules for rapid abg analysis, anion gap, approach to mixed disorders. The automated analysers measure the ph and the partial pressures of oxygen pao 2 and carbon dioxide paco 2 in arterial blood. This measures the number of hydrogen ions in your blood, which may indicate conditions such as copd, asthma, pregnancy, diabetic ketoacidosis dka, lung disease, liver disease, or drug use. Interpreting arterial blood gases abgs by michael greenlee for openpediatrics. It explains each component in turn followed by clinical examples to work through. Practice rational testing interpreting arterial blood gas. Garima aggarwal resident iind yr department of medicine5th august moderator dr.