…absent until the glucose has become very low [4]. Sampling and measurement error A capillary glucose is sufficient to start emergency treatment, but abnormal or…

…however, and an abnormal result is not specific to delirium. Symptoms are often worse in the evening and at night, but diurnal variation is not…

…adult Abnormal relaxation (grade 1 dysfunction) Pseudonormal (grade 2 dysfunction) Reversible restrictive filling (grade 3 dysfunction) Irreversible restrictive filling (grade 4 dysfunction) E/A ratio…

Right ventricle and pulmonary artery Normal interval Mildly abnormal Moderately abnormal Severely abnormal RV DIMENSIONS Basal RV diameter (RVD 1), cm 2.0–2.8…

…for atrial size and volume Women Men Normal range Mildly abnormal Moderately abnormal Severely abnormal Normal range Mildly abnormal Moderately abnormal Severely abnormal ATRIAL DIMENSIONS…

…1: aortic and pulmonary regurgitation (native valve disease). In European journal of echocardiography : the journal of the Working Group on Echocardiography of the European Society…

…ECG interpretation The QRS complex (ventricular complex): normal and abnormal configurations and intervals A complete QRS complex consists of a Q , R and S wave…

Arrhythmias and arrhythmology Drugs and electrolyte imbalance ECG Definition and Pathophysiology Acquired long QT syndrome (LQTS) is characterised by an abnormal prolongation of the QT…

…by transient abnormal vasoconstriction of one or more coronary arteries. Epicardial spasm produces a reversible functional occlusion and usually causes transmural ischaemia. The resulting abnormalities…

…abnormal tachyarrhythmia (only sinus tachycardia is more common). The prevalence of atrial fibrillation correlates strongly with age. Approximately 10% of individuals aged 80 years and…

…pregnancy or malignancy. A markedly raised GGT with the other tests normal is most often enzyme induction by alcohol or drugs and is often of…

…rate and blood pressure are monitored. The test is generally symptom limited and is stopped when limiting symptoms, significant electrocardiographic changes, arrhythmias or an abnormal…

…early mortality is usually related to the extent of myocardial injury and its complications—shock, reinfarction, myocardial rupture, and ventricular tachyarrhythmia—rather than embolization itself…

…factors include pulmonary disorders, particularly obstructive pulmonary disease, the use of theophylline, and elevated catecholamine states. EAT typically has an abrupt onset, although a brief…

…an abnormal amount of fluid in the pericardial space. It can be caused by numerous local and systemic disorders. Accumulation of fluid in the pericardial…

…conduction delay and intraventricular conduction defect are used interchangeably. Normal and abnormal intraventricular impulse conduction The intraventricular conduction system is composed of the His Purkinje…

…from V1 to V5 and then diminishes again in V6. Refer to Figure 1 . Abnormal R wave progression implies that the gradual increase from V1…

…discussion. A premature ventricular complex is recognized on the ECG as an abnormal and wide QRS complex occurring earlier than expected in the cardiac cycle…

…Marfan syndrome Takayasu's arteritis Iatrogenic (e.g complication of catheterization) Congenital dysplasia/aplasia of the pulmonary valve Idiopathic pulmonary artery dilation Pulmonary regurgitation results…

…et al. A new risk scheme to predict warfarin associated hemorrhage: the ATRIA (Anticoagulation and Risk Factors in Atrial Fibrillation) study. J Am Coll Cardiol…

…the American Society for Echocardiography (J Am Soc Echocardiogr 18:1440 1463, 2005). Left ventricular mass and geometry Women Men Reference Mildy abnormal Moderately abnormal…

…of the severity of native valvular regurgitation with two dimensional and Doppler echocardiography. In Journal of the American Society of Echocardiography : official publication of the…

…but the QRS complexes become wide due to abnormal ventricular depolarization (e.g sinus tachycardia with simultaneous left bundle branch block). P wave and PR…

…abnormalities in the presence of abnormal clinical risk assessment. Low risk PE is characterized by clinical low risk features, negative cardiac biomarkers, and no imaging…

…Proposed explanations in the source material include cardiac memory after abnormal ventricular activation, transient rate related conduction abnormalities, pacing related repolarization changes, and inadequate coronary…

…adults with elevated blood pressure (BP), in whom absolute cardiovascular risk varies considerably according to age and the presence of concomitant risk factors. In contrast…

…represent abnormal communications between a coronary artery and a cardiac chamber or vessel. Other congenital anomalies include anomalous origin of a coronary artery from the…

…of completely discrete diseases. Heart failure extends across the full range of LVEF, and echocardiographic measurement is subject to meaningful variability. HFmrEF may therefore represent…

…greater burden of cardiovascular and non cardiovascular comorbidity than patients with reduced EF. Pathophysiology Abnormal ventricular relaxation and increased filling pressures The central hemodynamic abnormality…

…of the mid QRS in at least two left facing leads [7]. These stricter parameters correlate more closely with abnormal LV mechanical function and the…

…metabolic abnormalities; and abnormal pain perception in patients without demonstrable ischaemia. The absence of obstructive disease therefore does not establish a benign diagnosis. ANOCA/INOCA…

…borderline or abnormal and the heart rate is less than 50 beats/min? A: Proceed directly to an exercise ECG test without repeating the resting…

…The central therapeutic objective is prevention of thromboembolic complications, particularly stroke. In untreated AF, stroke risk is increased approximately five fold, and AF is associated…

…dilated, light unresponsive pupils are indicative of cerebral anoxia or brain death and constitute an adverse prognostic sign. Notably, the presence of dilated, nonreactive pupils…

…however, tachyarrhythmia is defined as an abnormal and rapid heart rate, whereas tachycardia is defined as the subjective perception of a rapid heart rate. These…

Drugs and electrolyte imbalance ECG ECG changes due to electrolyte imbalance (electrolyte disorder) The normal cardiac action potential may be altered by electrolyte imbalance, owing…

…ECG waves and how to determine whether the ECG is normal or abnormal. Although heart rhythm will be discussed in detail in the next chapters…

…not be considered abnormal. For example, sinus bradycardia (a slow rhythm directed by the sinoatrial node) is a common finding in athletes and during sleep…

…of the QRS complex as an R’ wave (pronounced "R prime"), which is directed anteriorly and rightward. Due to the abnormal depolarization sequence of the…

…are defective and fail to generate electrical impulses. Side effects of drugs (notably beta blockers, digitalis, verapamil, diltiazem, amiodarone, clonidine) – These drugs affect the pacemaker…

…1 ). If the T wave and the QRS complex head in opposite directions, the T wave is said to be discordant which is abnormal. Because…

…Causes of ventricular rhythm and idioventricular rhythm The usual mechanisms are responsible for all ventricular rhythms. Increased automaticity (in His Purkinje fibers), abnormal automaticity (in…

…particularly in the elderly An abnormal 24 hour rhythm should prompt investigation for sleep apnoea, renal disease and secondary hypertension, and lead to one dose…

…Normal Abnormal Abnormal A compensated simple disorder, or two opposing primary disorders It is therefore not enough to ask which of the pCO₂ and the…

…of the severity of native valvular regurgitation with two dimensional and Doppler echocardiography. In Journal of the American Society of Echocardiography : official publication of the…

…the heart are immunoglobulin light chain (AL) amyloidosis and transthyretin (ATTR) amyloidosis [8, 15]. AL Amyloidosis: This is a plasma cell dyscrasia in which abnormal…

…Classification of CKD CKD severity is classified by eGFR and albuminuria. The following categories describe the principal eGFR stages: CKD stage eGFR Clinical context Cardiovascular…

…clinical context, the diagnosis requires evidence of new myocardial ischaemia, which may manifest through symptoms, ECG changes, or angiographic complications. Evaluation and Physical Examination The

…abnormal arteriolar vasoconstriction. More than one mechanism may coexist. Supply–demand mismatch MINOCA may result from a mismatch between myocardial oxygen supply and demand. The…

…or become abnormal, in the presence of symptoms suggestive of ischaemia and presumed new ischaemic ECG changes. The distinction between myocardial injury and type 2…

…Depression, low self esteem or body image disturbance The number and severity of obesity related complications generally increase as the degree of obesity rises. Nevertheless…

…This response is age dependent and may rarely occur in healthy people older than 60 years. The abnormal slope does not itself distinguish precapillary from…

…in type 2 and type 3 MI. A diagnosis of MI should not be made solely from an abnormal cTn concentration in the absence of…

…depression). As mentioned above there are numerous other conditions that affect the ST T segment and it is fundamental to be able to differentiate these…

…in high, pointed and asymmetric T waves. These must be differentiated from hyperacute T waves seen in the very early phase of myocardial ischemia. Hyperacute…

…though abnormal cardiac troponin (cTn) values in the setting of acute or chronic heart failure are often better categorised as myocardial injury. Clinical Presentation and…

…Abnormal renal/liver function, Stroke history, Bleeding history, Labile INRs, Elderly age ( 65), and Drugs/alcohol. A crucial clinical pitfall is the misapplication of this…

…ventricular hypertrophy, and to the left in left ventricular hypertrophy). ST T segment Significant hypertrophy may result in abnormal depolarization of the ventricular myocardium. This…

…difficult to discern depending on the skin tone. For laypeople, confirming absent or abnormal breathing is sufficient to alert the emergency service and commence CPR…

ECG Myocardial ischemia and infarction Acute Myocardial Infarction: Definition & Criteria Acute myocardial infarction is the most severe complication of coronary artery disease. The most common…