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Related Concept Videos

Cardiomyopathy VII: Pre and Post Operative Nursing Management01:28

Cardiomyopathy VII: Pre and Post Operative Nursing Management

Patients with hypertrophic cardiomyopathy (HCM) and left ventricular outflow tract (LVOT) obstruction who remain symptomatic despite optimal medical therapy may undergo a septal myectomy (Morrow procedure). This procedure involves excising a portion of the hypertrophied septum below the aortic valve using a heart-lung machine to improve blood flow through the LVOT. Effective preoperative and postoperative nursing management ensures successful patient outcomes, minimizes complications, and...
Heart Failure Drugs: Inotropic Agents01:26

Heart Failure Drugs: Inotropic Agents

Positive inotropic agents are commonly used as the first line of treatment for heart failure. One such agent is digoxin, derived from the genus Digitalis, which has been known for centuries but effectively utilized since 1785. However, these cardiac glycosides can have potentially toxic effects due to their mechanism of action, which involves inhibiting Na+/K+-ATPase and increasing contractility. Digoxin is absorbed orally and distributed in various tissues, including the CNS. It has a long...
Antiarrhythmic Drugs: Class I Agents as Sodium Channel Blockers01:22

Antiarrhythmic Drugs: Class I Agents as Sodium Channel Blockers

Class I antiarrhythmic drugs are used to treat various types of arrhythmias or irregular heart rhythms. These drugs block the sodium (Na+) channels in the cardiac cells, thereby affecting the movement of electrical impulses across the heart. Class I antiarrhythmic drugs are divided into three subgroups: Class IA, Class IB, and Class IC, each with distinct mechanisms of action and effects on the heart.
Class 1A Antiarrhythmic Drugs: These drugs work by moderately blocking sodium channels,...
Heart Failure Drugs: β-Blockers01:22

Heart Failure Drugs: β-Blockers

β-adrenergic antagonists, commonly known as β-blockers, block the effects of sympathetic neurotransmitters such as noradrenaline (NA) and adrenaline (ADR). They have several beneficial effects in heart failure treatment. They reduce heart rate, the force of contraction, and cardiac muscle relaxation. They also slow the atrial-ventricular conduction rate and raise the threshold for arrhythmias. The concentration of β-blockers determines their effects on bronchodilation, vasodilation, and...
Heart Failure Drugs: Diuretics01:22

Heart Failure Drugs: Diuretics

Heart failure and kidney perfusion are interconnected in a complex way. Reduced renal perfusion and venous congestion are two significant factors that contribute to renal dysfunction in heart failure. The kidneys, primarily responsible for fluid balance in the body, are adversely affected due to compromised cardiac output and increased venous pressure. In response to reduced renal perfusion, the kidneys activate neurohumoral mechanisms to restore balance. However, these mechanisms can be...
Antiarrhythmic Drugs: Class II Agents as β-Adrenergic Blockers01:24

Antiarrhythmic Drugs: Class II Agents as β-Adrenergic Blockers

Adrenergic stimulation generally impacts cardiac rate and rhythm. Specifically, stimulation of the β-adrenoceptors triggers an increase in intracellular calcium ion influx and pacemaker currents, which may cause arrhythmias. Catecholamines like adrenaline also demonstrate β2-adrenoceptor-mediated hypokalemia, impacting cardiac action potential and disrupting the normal cardiac rhythm. Class II antiarrhythmic drugs are β-adrenoceptor antagonists or β-blockers, which indirectly block calcium...

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Related Experiment Video

Updated: May 16, 2026

Cardiac Loading using Passive Left Atrial Pressurization and Passive Afterload for Graft Assessment
08:49

Cardiac Loading using Passive Left Atrial Pressurization and Passive Afterload for Graft Assessment

Published on: August 2, 2024

Levosimendan preoperative.

Andrea Rognoni1, Alessandro Lupi, Chiara Cavallino

  • 1Coronary Care Unit and Catheterization Laboratory, Hospital Maggiore della Carità, Corso Mazzini 18, 28100 Novara, Italy. arognoni@hotmail.com

Current Pharmaceutical Design
|December 12, 2012
PubMed
Summary

Levosimendan, a novel calcium-sensitizing inotropic agent, demonstrates potent efficacy in treating heart failure during high-risk surgeries. This review explores its perioperative benefits for patients with reduced left ventricular function.

Related Experiment Videos

Last Updated: May 16, 2026

Cardiac Loading using Passive Left Atrial Pressurization and Passive Afterload for Graft Assessment
08:49

Cardiac Loading using Passive Left Atrial Pressurization and Passive Afterload for Graft Assessment

Published on: August 2, 2024

Area of Science:

  • Cardiology
  • Anesthesiology
  • Pharmacology

Background:

  • Increasing numbers of high-risk patients with reduced left ventricular function undergo surgery.
  • Heart failure is a primary cause of perioperative morbidity and mortality in this population.
  • Existing treatments include intra-aortic balloon pumps and traditional inotropic agents.

Purpose of the Study:

  • To review the experimental and clinical effects of perioperative levosimendan.
  • To evaluate levosimendan as a treatment for heart failure in surgical patients.
  • To compare levosimendan's efficacy with other inotropic agents.

Main Methods:

  • Review of published literature on levosimendan in perioperative settings.
  • Analysis of experimental studies on levosimendan's mechanisms of action.
  • Synthesis of clinical trial data regarding levosimendan's efficacy and safety.

Main Results:

  • Levosimendan is a calcium-sensitizing inotropic agent and vasodilator.
  • Its inotropic efficacy is dose-dependent and comparable or superior to other agents.
  • Evidence suggests benefits in managing perioperative heart failure.

Conclusions:

  • Levosimendan represents a promising therapeutic option for perioperative heart failure.
  • Its vasodilatory and inotropic properties are advantageous in high-risk surgical patients.
  • Further research should continue to define its optimal role in perioperative care.