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Sources of error in blood gas analysis Essentially, this chapter is a short list of reasons as to why your ABG (or venous biochemistry)  measurement may be wrong, i.e. not reflective of what is happening in the patient. In 99% of cases, it is a problem with the collection storage and transport of the sample, because these are factors which are subject to human input and thus human error. The self-calibrating blood gas analyser is a dutiful and dependable serv...
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How the blood gas analyser measures ABG variables Question 9.1 from the second paper of 2008 asks of the bewildered candidates: "Outline  how pH, PCO2 and PO2  are measured in a blood gas analyser and briefly state the underlying principle behind  each of those measurements." The pass rate of 47% was pleasantly surprising, suggesting that many (if not all) of the candidates arose from an intellectually robust anaesthetic background. Judgi...
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ICU Management & Practice, Volume 18 - Issue 1, 2018 Understanding LVAD & artificial hearts Regarding the growing number of patients with long-term mechanical assist devices, intensivists need to understand the physiology of the devices, their functioning, potential complications and their management. Long-term mechanical circulatory support (MCS) is being used increasingly for patients at risk of dying from heart failure and cardiogenic shock (Ponik...
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Drugs & Diseases > Medscape > Fast Five Quizzes Fast Five Quiz: Venous Thromboembolism Zab Mosenifar, MD December 13, 2018 Venous thromboembolism (VTE) encompasses two interrelated conditions that are part of the same spectrum: deep vein thrombosis (DVT) and pulmonary embolism (PE). PE and DVT can occur in the setting of disease processes, after hospitalization for serious illness, or after major surgery. Th...
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Drugs & Diseases > Medscape > Fast Five Quizzes Fast Five Quiz: Venous Thromboembolism Zab Mosenifar, MD December 13, 2018 Venous thromboembolism (VTE) encompasses two interrelated conditions that are part of the same spectrum: deep vein thrombosis (DVT) and pulmonary embolism (PE). PE and DVT can occur in the setting of disease processes, after hospitalization for serious illness, or after major surgery. Th...
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Drugs & Diseases > Medscape > Fast Five Quizzes Fast Five Quiz: Venous Thromboembolism Zab Mosenifar, MD December 13, 2018 Venous thromboembolism (VTE) encompasses two interrelated conditions that are part of the same spectrum: deep vein thrombosis (DVT) and pulmonary embolism (PE). PE and DVT can occur in the setting of disease processes, after hospitalization for serious illness, or after major surgery. Th...
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Drugs & Diseases > Medscape > Fast Five Quizzes Fast Five Quiz: Venous Thromboembolism Zab Mosenifar, MD December 13, 2018 Venous thromboembolism (VTE) encompasses two interrelated conditions that are part of the same spectrum: deep vein thrombosis (DVT) and pulmonary embolism (PE). PE and DVT can occur in the setting of disease processes, after hospitalization for serious illness, or after major surgery. Th...
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Drugs & Diseases > Medscape > Fast Five Quizzes Fast Five Quiz: Venous Thromboembolism Zab Mosenifar, MD December 13, 2018 Venous thromboembolism (VTE) encompasses two interrelated conditions that are part of the same spectrum: deep vein thrombosis (DVT) and pulmonary embolism (PE). PE and DVT can occur in the setting of disease processes, after hospitalization for serious illness, or after major surgery. Th...
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Viewpoint January 15, 2019 Rethinking How Antibiotics Are Prescribed: Incorporating the 4 Moments of Antibiotic Decision Making Into Clinical Practice Pranita D. Tamma, Melissa A. Miller, Sara E. Cosgrove, et al. JAMA. 2019;321(2):139-140. doi:10.1001/jama.2018.19509 Antibiotics save countless lives, but can also cause significant harm including antibiotic-associated adverse events, Clostridium difficile&n...
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Drugs & Diseases > Medscape > Fast Five Quizzes Fast Five Quiz: Venous Thromboembolism Zab Mosenifar, MD December 13, 2018 Venous thromboembolism (VTE) encompasses two interrelated conditions that are part of the same spectrum: deep vein thrombosis (DVT) and pulmonary embolism (PE). PE and DVT can occur in the setting of disease processes, after hospitalization for serious illness, or after major surgery. Thromboembol...
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