…further classified based on the intensity of tracer uptake and associated myocardial changes: Mild defects : Characterized by decreased tracer counts while preserving normal wall thickness…

…While detailed receptor pharmacology is not specified in the source material, it is utilised alongside inotropes in acute heart failure to support systemic blood pressure…

…while supine Sudden onset of palpitations followed by syncope Severe coronary artery or structural heart disease High risk features on examination include: Unexplained systolic blood…

…blood flow, due to the reduced metabolic rate that accompanies declining body temperature. For every 1°C reduction in body temperature, there is a 6% decrease…

…the aortic valve opens and blood is ejected into the aorta. Left ventricular volume decreases as the ventricle contracts and pumps blood into the aorta…

…of the ventricular wall is the epicardium , which contains fibroelastic connective tissue, blood vessels, lymphatics and adipose tissue. The myocardium The thick muscular layer between…

…common in patients with inferoposterior left ventricular infarction, while infarction confined predominantly to the right ventricle is rare. The clinical spectrum extends from limited right…

…provided a scaffold that tacked down dissection flaps, counteracted elastic recoil, reduced emergency vessel closure and decreased the need for emergency CABG. Metal only stents…

…By reducing intestinal cholesterol absorption, it decreases the quantity of cholesterol delivered to the liver. The resulting hepatic response includes increased expression of low density…

…The discrepancy between traditional figures and recent studies is due to the dramatic decrease in the incidence of acute coronary syndromes over the past decades…

…In DHF, ventricular rate may decrease as dyspnoea improves and sympathetic activation subsides, making it difficult to determine whether AF initiated the deterioration or resulted…

…widespread acceptance was delayed, partly due to autopsy studies demonstrating an absence of coronary thrombi in a significant proportion of deceased patients. Historically referred to…

…drug prolongs the QT interval and the PR interval, while leaving the QRS duration largely unchanged. Continuous ECG monitoring is mandated during hospital initiation to…

…inverted and ST segments are depressed in leads with positive QRS waves (such as I, aVL, V5, and V6), while ST segments are elevated and…

…The resulting glucosuria and natriuresis reduce proximal tubular workload, contract plasma volume and modestly lower blood pressure. Increased sodium delivery to the macula densa restores…

…stretched out, which results in increased wavelength and decreased frequency. The Doppler principle is primarily used to study blood flow and myocardial motion. Figure 1…

…changes. Specific electrolyte disorders 1. Sodium Increased (hypernatremia) and decreased (hyponatremia) sodium levels do not have any effect on the ECG, nor cardiac rhythm, or…

…to reduce its risk. VSR incidence has decreased from approximately 1–2% without reperfusion to about 0.2% in the reperfusion era. Clinical presentation and…

…to calculate; if the left ventricle contains 100 ml of blood at the end of diastole and 40 ml is pumped out during systole, then…

…completely blocked and a loss of P wave occurs. The P P interval is gradually decreased. The ensuing pause is twice as long as the…

…any retrieval: it begins when someone in the intensive care unit identifies a possible donor and the deceased person's own wishes are properly established…

…hepatocytes. Reduced hepatic PCSK9 synthesis decreases circulating PCSK9, increases the availability of hepatic low density lipoprotein cholesterol (LDL C) receptors at the cell surface, and…

…muscle cells. As compared with nitroprusside, nicardipine induces relatively greater venodilation than arteriolar dilation. Effects Nicardipine causes dilation of the coronary and systemic arteries, decreases…

…these adverse events are related to the suppression of the renin angiotensin aldosterone system (RAAS), such as decreases in blood pressure and mild azotemia. However…

…in turn reduces the L type calcium current (Ica.L) and the pacemaker current (If) in sinus node cells, accompanied by a decrease in Vmax…

…attenuates carotid sinus baroreceptor activity and acts centrally and peripherally to enhance vagal tone. These sympatho inhibitory effects decrease serum norepinephrine levels, plasma renin levels…

…obesity. Gestational hypertension is defined in the supplied guideline material as blood pressure 140/90 mmHg on two separate occasions after 20 weeks of gestation…

…Grading of hyperthermia. Body temperature should decrease at a rate of 0.1°C/min during the cooling process. Malignant hyperthermia Malignant hyperthermia may manifest under…

…months to about 150 beats/min. It then gradually decreases to about 120 beats/min at 6 months of age. After 12 months of age…

…As the heart rate increases, the QT interval decreases and vice versa. The physiological purpose of this phenomenon is to allow for faster cardiac cycles…

…And the opposite, i.e the heart rate decreases during expiration due to increased vagal tone. This causes the slightly irregular rhythm seen in Figure…

…in this layer results in radial shortening , meaning that the diameter of the ventricular cavity decreases (Figure 1B). The muscle fibers adjacent to the epicardium…

…a sudden heart rate decrease (e.g due to sinus pause or post VPC pause) results in augmentation of early afterdpolarization amplitude (typically seen with…

…selective for vascular smooth muscle cells and has little or no effect on myocardial contractility or conduction. Clevidipine reduces mean arterial blood pressure (MAP) by…

…Minimal chronotropic effect. Increases coronary blood flow. Atrial or ventricular arrhythmias Bradycardia Peripheral (digital) ischemia Hypertension (especially nonselective β blocker patients) Prolonged use may be…

…and coronary vasodilator. When administered intravenously (150 mg over 10 minutes followed by 1 mg/min), it decreases heart rate, systemic vascular resistance, and left…

…a sudden heart rate decrease (e.g due to sinus pause or post VPC pause) results in augmentation of early afterdpolarization amplitude (typically seen with…

…intrathoracic pressure decreases during inhalation, which lowers pressure in the pulmonary veins and left atrium; this facilitates blood flow from the pulmonary veins to the…

…the cell membranes collapse whereby cellular proteins are released into the circulation. It is possible to detect elevated levels of myocardial proteins in blood within…

…effect on the activity in the SA node. Propafenone may decrease automaticity in the SA node and thereby lower heart rate. P wave No effect…

…the Doppler effect is provided here. The Doppler effect is used to assess the velocity and direction of blood flow. This is possible because sound…

…selective for vascular smooth muscle cells and has little or no effect on myocardial contractility or conduction. Clevidipine reduces mean arterial blood pressure (MAP) by…

…Minimal chronotropic effect. Increases coronary blood flow. Atrial or ventricular arrhythmias Bradycardia Peripheral (digital) ischemia Hypertension (especially nonselective β blocker patients) Prolonged use may be…

…in the left ventricle decreases and when it is lower than left atrial pressure, the mitral valve opens, which results in blood flowing into the…

…sequence of activation of the piezoelectric crystals. The density of the ultrasound lines decreases with increasing distance from the transducer; this affects the lateral resolution…

…ST segment deviation ). ST segment depression implies that the ST segment is depressed below the level of the PR segment. ST segment elevation implies that…

…ST segment and T wave (ST T changes). The ST segment may be either elevated or depressed. The T wave may diminish in amplitude ( flat…