Cardiac Arrhythmias and Hypertensive Emergencies

Dec 30, 2018 by in CRITICAL CARE Comments Off on Cardiac Arrhythmias and Hypertensive Emergencies

INTRODUCTION Print Section Listen Cardiac arrhythmias and hypertensive emergencies are not uncommon in the intensive care unit. This chapter will discuss basic cardiac electrophysiology, cardiac conduction, electrocardiography (ECG) interpretation, tachyarrhythmias,…

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Acute Coronary Syndromes

Dec 30, 2018 by in CRITICAL CARE Comments Off on Acute Coronary Syndromes

INTRODUCTION Print Section Listen An acute coronary syndrome (ACS) encompasses a clinical spectrum of myocardial ischemia ranging from unstable angina (UA) and non–ST-segment elevation myocardial infarction (NSTEMI) to ST-segment elevation…

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Electrolyte Disorders

Dec 30, 2018 by in CRITICAL CARE Comments Off on Electrolyte Disorders

INTRODUCTION Print Section Listen Critically ill patients have disturbances in multiple organ systems and hence are at risk for serious imbalances in electrolyte and water handling. Electrolyte disorders are extremely…

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Acid–Base Disorders

Dec 30, 2018 by in CRITICAL CARE Comments Off on Acid–Base Disorders

INTRODUCTION Print Section Listen The human body needs to regulate free hydrogen ions (H+) within a narrow window in order to maintain proper protein structure and function. In the process…

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Hemodynamic Monitoring

Dec 30, 2018 by in CRITICAL CARE Comments Off on Hemodynamic Monitoring

INTRODUCTION Print Section Listen Patients are usually transferred to the intensive care unit (ICU) due to their hemodynamic instability. Interpretation of hemodynamic monitoring is crucial to delivery of prompt and…

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Hypoxemic Respiratory Failure

Dec 30, 2018 by in CRITICAL CARE Comments Off on Hypoxemic Respiratory Failure

INTRODUCTION Print Section Listen Hypoxia occurs when tissues do not receive adequate oxygen to meet their metabolic demands. It is nonspecific and can mean reduced arterial partial pressure of oxygen…

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Thromboembolic Disease

Dec 30, 2018 by in CRITICAL CARE Comments Off on Thromboembolic Disease

INTRODUCTION Print Section Listen Thromboembolic disease is derived from Virchow’s triad of alterations in blood flow, vascular endothelial injury, and alterations in constituents of the blood. Risk factors include antithrombin…

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Hypercarbic Respiratory Failure

Dec 30, 2018 by in CRITICAL CARE Comments Off on Hypercarbic Respiratory Failure

INTRODUCTION Print Section Listen The main function of the lung is gas exchange: the elimination of carbon dioxide (CO2) and the delivery of oxygen (O2) to the tissues. When either…

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Congestive Heart Failure

Dec 30, 2018 by in CRITICAL CARE Comments Off on Congestive Heart Failure

INTRODUCTION Print Section Listen Heart failure (HF) is the inability of the heart to pump an adequate supply of blood to meet the demands of the body. It is an…

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Shock

Dec 30, 2018 by in CRITICAL CARE Comments Off on Shock

INTRODUCTION Print Section Listen Shock is a profound state of circulatory failure that leads to a reduction in delivery and impaired utilization of oxygen and other nutrients at the end-organ…

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