However, practice and experience will ease the frustration. What this means is that water h2o can combine with co2 and form carbonic acid. Continuous regular abg monitoring and recording for trends. Interpreting abgs arterial blood gases made easy ausmed. For this second edition of arterial blood gases made easy we have remained true to our. Abg quick interpretation parameter acidosis normal alkalosis reflects ph 7. Abg interpretation a guide to understanding abgs geeky medics. There are eight 8 steps simple steps you need to know if you want to interpret abg results using the tictactoe technique. The usefulness of this diagnostic tool is dependent.
They are suitable for all patients needing a known concentration of oxygen, but 24% and 28% venturi masks are particularly suited to those at risk of carbon dioxide retention e. Most doctors struggle with arterial blood gas abg interpretation. Interpretation of arterial blood gases is an essence of critical care. Interpretation of the arterial blood gas selflearning packet see swift for list of qualifying boards for continuing education hours. Mixed venous gases measures oxygen left in the blood as it returns to the heart right side after it has been pumped.
Its worth mentioning that it is possible to have a mixed acidosis or alkalosis. Abgs made easy for nurses w tic tac toe method for. Woodruff, msn, rnbc, cns, cmsrn, cen 6 easy steps to. A respiratory acidosis with a low shco3 would indicate a combined respiratory and metabolic acidosis.
This is bicarbonate, a chemical buffer made in the kidneys to neutralize acids. Partially compensated, or combined abg problems biology chegg tutors. Possible dialysis to remove excess lactate, manipulation of ventilation settings to adjust co 2 levels, but always maintaining tissue perfusion. Abg interpretation a guide to understanding abgs geeky. Po2 can be thought of as the driving force for o2 molecules to bind to hb. Arterial blood gas analysis is an essential part of diagnosing and managing a patients oxygenation status and acidbase balance. Venturi masks are available in the following concentrations. Nursing students will be tested on this material in nursing school, and this is one of the easiest ways to solve these arterial blood gas problems. Abg interpretation free download as powerpoint presentation. Arterial blood gases abg results reflect underlying pathology and interpretation of the results are often compounded by ongoing disease processes and clinical interventions. From this baseline, you can then begin to recognise significant variations in a patients results, which could indicate clinical deterioration.
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