…the left anterior descending artery (LAD) and the left circumflex artery (LCX), whereas the posteromedial papillary muscle receives blood supply from either LCX or the…

…Rheumatic heart disease. Dilatation of the right ventricle. Dilatation of the right atrium. Pulmonary hypertension. Left to right shunt. Right ventricular dysfunction due to pressure…

…rS complexes. Causes of left anterior fascicular block (LAFB) LAFB may occur in persons who are otherwise healthy. The majority of those with LAFB, however…

…duration of 120 ms (0.12 s) or more is required to diagnose a complete left bundle branch block . In addition to prolonged QRS duration…

…duration exceeding 140 msec in males and 130 msec in females , along with slurring or notching of the mid QRS in at least two left…

…Left anterior fascicular block is diagnosed if the axis is between 45° and 90° with qR complex in aVL and QRS duration 0,12 s…

…Left anterior fascicular block is diagnosed if the axis is between 45° and 90° with qR complex in aVL and QRS duration is 0,12…

…indirectly as reciprocal abnormalities in the anterior precordial leads. Acute myocardial ischaemia alters the resting membrane potential and action potential duration of affected myocardial cells…

…deterioration is more likely with larger infarcts, anterior infarction, advanced age, delayed or unsuccessful revascularization, and pre existing diabetes, previous myocardial infarction, or heart failure…

…depolarization of the right ventricle relies on electrical impulses originating from the left ventricle. However, these impulses propagate slowly as they travel partially or entirely…

…circumflex artery before a 60 minute occlusion of the left anterior descending coronary artery (LAD) would reduce the infarct size by 60%, as compared with…

…or the needle from a pericardiocentesis set), 10 mL and 20 mL syringes, a three way tap. A Seldinger set with a guidewire, a dilator…

…lead to ventricular dilation. However, the term dilated cardiomyopathy (DCM) refers to idiopathic or genetic dilation of the left ventricle . Patients with DCM typically develop…

…with left ventricular dilation. This type of cardiomyopathy, referred to as tachycardia induced cardiomyopathy , can be caused by any tachyarrhythmia leading to prolonged periods of…

…may also lead to left ventricular dilation, which is referred to as ischemic cardiomyopathy (Dilated Cardiomyopathy). Ventricular dilation leads to dilation of the mitral annulus…

…prevent, or alleviate, the pressure increase in the left ventricle and left atrium. Chronic aortic regurgitation leads to dilatation and hypertrophy of the left ventricle…

…with more severe neurological deficits, and carry higher rates of mortality and long term disability compared to non cardioembolic ischemic strokes. Consequently, the cornerstone of…

…size and form of the thrombus, it will occlude the main pulmonary artery or its branches. The larger the thrombus, the more proximal the occlusion…

…al). ARVC is more malignant in men, the reason for which remains elusive. Gene mutations can be confirmed in roughly 60% of individuals with ARVC…

…prolonged duration of effect, and significant individual variations in its effect. Drug Enalaprilat Brand names Vasotec IV ® Indications Hypertension and hypertensive emergency. Acute left…

…prolonged duration of effect, and significant individual variations in its effect. Drug Enalaprilat Brand names Vasotec IV ® Indications Hypertension and hypertensive emergency. Acute left…

…hypertension and atherosclerotic coronary disease In patients with heavy alcohol use, left ventricular dilation may precede the development of increased left ventricular hypertrophy and mass…

…For better or worse, ejection fraction has become virtually synonymous with left ventricular function. An obvious drawback with the use of the ejection fraction is…

…or treatment with sodium nitroprusside. In most hypertensive emergencies the following is aimed for: 1. Lower the mean arterial pressure by no more than about…

…third vector: the ventricular free wall The vectors resulting from activation of the ventricular free walls is directed to the left and downwards ( Figure 7 )…

…a patient on digoxin treatment 1 ECG signs of left atrial enlargement 3 Left axis deviation 2 QRS duration ≥90 milliseconds 1 Prolonged R wave…

…a delayed equalization of the pressure gradient. Conversely, the deceleration time is shortened if left ventricular compliance is reduced, or if left atrial pressure is…

…The duration of the P wave will exceed 120 milliseconds in lead II. Biatrial abnormality/enlargement Biatrial abnormality implies that the ECG indicates both left…

…the articles on left ventricular enlargement, right ventricular enlargement and atrial enlargement. Below follows a discussion on the principles and differences of dilatation and hypertrophy…

…system (His Purkinje network), which results in rapid impulse transmission and thus shorter QRS duration (as compared with apical pacing). Because ventricular pacing results in…

…of increasing coronary blood flow. In circumstances with non shockable rhythm or with prolonged periods of VF (fine VF resistant to defibrillations), the purpose of…

…reflection of the electrical potentials generated by the left ventricle. QRS duration QRS duration is the time duration from the start to the end of…

…complex is actually a reflection of left ventricular depolarization. QRS duration is the time interval from the onset to the end of the QRS complex…

ECG Hypertrophy and dilatation Biventricular hypertrophy Simultaneous hypertrophy of the left and right ventricle is rather common. The ECG has low sensitivity with respect to…

…ECGs showing left and right ventricular hypertrophy. Next chapter Biventricular Hypertrophy Related chapters Overview of Hypertrophy and Dilatation Left Ventricular Hypertrophy Atrial Hypertrophy and Dilatation …

…prolonged duration of effect, and significant individual variations in its effect. Drug Enalaprilat Brand names Vasotec IV ® Indications Hypertension and hypertensive emergency. Acute left…

…technically more difficult with ultrasound Femoral vein Fastest, and does not interfere with ongoing CPR or airway management, no risk of pneumothorax Highest risk of…

…heal with good function or cosmesis without apposition. A wound that bleeds because the edges are held apart. A wound through the full thickness of…

…lead V1 and qRS pattern in V6 with QRS duration <120 ms) D: Profound sinus bradycardia (<30 beats/min or sinus pauses ≥3 s) Explanation…

…therapies have failed. Patients with structural heart disease or reduced left ventricular function are not eligible. Effects of propafenone and flecainide on ECG, heart rhythm…

…may impair left ventricular filling and reduce systemic output. In this setting, venous congestion is generally treated initially with diuretics, whereas norepinephrine and/or inotropes…

…the ventricle is empty or nearly empty). In patients with an initial shockable rhythm, compressions and ventilation can extend the duration of the shockable rhythm…

…Conventional thoracic X ray sometimes reveals calcification of the pericardium. With MRI or CT, the thickness of the pericardium can be measured and in most…

…in the AV node is high grade. Causes of tachyarrhythmia with narrow QRS complexes (QRS duration < 0.12 s): sinus tachycardia, inappropriate sinus tachycardia…

…20 th week of pregnancy, or when the fundal height surpasses the umbilicus, the uterus should be manually displaced to the woman's left side …

…collectively dictate the urgency and modality of intervention [3] . By Duration: Non sustained VT (NSVT): Defined as three or more consecutive ventricular beats at a…

…safe in patients with coronary artery disease since it does not increase heart rate, and reduces myocardial oxygen consumption. Time to onset of action: 5…

…in patients with suspected or established coronary artery disease (CAD). It combines echocardiographic assessment of left ventricular (LV) structure and function with exercise or pharmacological…

…clinical patterns of AF—paroxysmal, persistent, long standing persistent and permanent—and is not determined solely by the apparent frequency or duration of documented episodes…

…cardiomyopathy or hypertrophy. Prognosis of nonspecific intraventricular conduction delay Patients with nonspecific intraventricular conduction delays are at twice as great a risk of all cause…

…escalation of beta blocker or CCB therapy. Nicorandil and trimetazidine are additional options in selected patients. Treatment choices should be integrated with management of precipitating…

…the stroke risk is high or the time of onset uncertain, choose the more cautious course. Anticoagulation Assess the risk with CHA₂DS₂ VA (the sex…

…reserved for patients with a CHA₂DS₂ VA score of 0–1. Check what applies in your own region. Duration above the threshold or unknown: at…

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

…left ventricular hypertrophy, or echocardiographic evidence of impaired filling, make the diagnosis more likely. HFpEF and HFmrEF together account for approximately half of patients with…

…left ventricular systolic function is depressed or preserved Whether hypotension is present Whether an accessory pathway is suspected, particularly before administration of digoxin The duration…

…or more frequently, as individually appropriate. 3 Important study: Milrinone as Compared with Dobutamine in the Treatment of Cardiogenic Shock (N Engl J Med 2021…

…is caused by a complete coronary artery occlusion, which results in the complete stop of blood flow and thus more extensive myocardial ischemia (referred to…

…duration ≥40 ms suggest ventricular tachycardia. Duration from start of QRS complex to nadir of S wave ≥60 ms suggests ventricular tachycardia. V6 : QR or…

…Note that narrow complex tachyarrhythmia rarely causes circulatory compromise or collapse. Causes of tachycardia (tachyarrhythmia) with wide QRS complexes (QRS duration ≥0,12 s) : ventricular…