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Heart Failure Drugs: Inotropic Agents01:26

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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...
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The activation of the sympathetic nervous system and the renin-angiotensin-aldosterone system (RAAS) contributes to cardiac remodeling, and inhibiting the RAAS is a pharmacological target in heart failure management. As a result, neurohumoral modulation is a crucial treatment principle for managing heart failure. This approach involves using medications like ACE inhibitors (ACEIs), angiotensin receptor blockers (ARBs), β-blockers, mineralocorticoid receptor antagonists (MRAs), and neutral...
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Minimal Invasive Surgical Procedure of Inducing Myocardial Infarction in Mice
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Invasive Treatment Strategy for Older Patients with Myocardial Infarction.

Vijay Kunadian1, Helen Mossop1, Carol Shields1

  • 1From the Translational and Clinical Research Institute, Faculty of Medical Sciences (V.K.), the Population Health Sciences Institute (H.M., M.D.T.), and the Newcastle Clinical Trials Unit (C.S., M. Bardgett, P.W., M.D.T., J.P.), Newcastle University, and the Cardiothoracic Centre, Freeman Hospital, Newcastle upon Tyne Hospitals NHS Foundation Trust (V.K., J.A.H., I.U.H.), Newcastle upon Tyne; Northumbria Healthcare NHS Foundation Trust, Cramlington (C.R., D.P.R.); the Faculty of Health Sciences and Wellbeing, School of Medicine, University of Sunderland Medical School, Sunderland (D.P.R.); North Tees and Hartlepool NHS Foundation Trust, Stockton-on-Tees (J. Carter, J.Q.); Chesterfield Royal Hospital, Chesterfield (J. Cooke); South Tees NHS Foundation Trust, Middlesbrough (D.A.); County Darlington and Durham NHS Foundation Trust, Darlington (J. Murphy); Royal Derby Hospital, Derby (D.K.); University Hospital Ayr, Ayr (J. McGowan); Leeds Teaching Hospital NHS Trust, Leeds (M.V.); Torbay and South Devon NHS Foundation Trust, Torquay (D.F.); Manchester University NHS Foundation Trust, Manchester (H.C.); Epsom and St. Helier University Hospitals, Epsom (S.M.); Ninewells Hospital, Dundee (J.I.); Bradford Royal Infirmary, Bradford (S.L.); Blackpool Victoria Hospital, Blackpool (G.G.); United Lincolnshire Hospitals NHS Trust, Lincoln (K.L.); Wrightington Wigan and Leigh Teaching Hospitals NHS Foundation Trust, Wigan (A.S.); North Bristol NHS Trust, Bristol (A.G.D.); University Hospital of Leicester NHS Trust, Leicester (S.H.); Barts Health NHS Trust (M. Belder) and London School of Hygiene and Tropical Medicine (S.J.P.), London; the Centre for Cardiovascular Science, University of Edinburgh, Edinburgh (M.D., D.E.N., K.A.A.F.); Norwich Medical School, University of East Anglia, Norwich (M.F.); and Sheffield Teaching Hospital, Sheffield (R.F.S.) - all in the United Kingdom.

The New England Journal of Medicine
|September 3, 2024
PubMed
Summary
This summary is machine-generated.

For older adults with non-ST-segment elevation myocardial infarction (NSTEMI), an invasive strategy showed no significant benefit over conservative medical therapy. The study found similar rates of cardiovascular death or nonfatal heart attack between the two approaches.

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Area of Science:

  • Cardiology
  • Geriatric Medicine
  • Clinical Trials

Background:

  • Optimal treatment strategies for older adults with non-ST-segment elevation myocardial infarction (NSTEMI) remain uncertain.
  • The balance between conservative medical therapy and invasive interventions in this demographic requires further investigation.

Purpose of the Study:

  • To compare the efficacy of a conservative medical therapy strategy versus an invasive strategy (coronary angiography and revascularization) in older adults (≥75 years) with NSTEMI.
  • To assess the composite outcome of cardiovascular death or nonfatal myocardial infarction in frail elderly patients with NSTEMI.

Main Methods:

  • A prospective, multicenter, randomized trial (SENIOR-RITA) involving 1518 patients aged 75 years or older with NSTEMI.
  • Patients were randomized 1:1 to either a conservative medical therapy group or an invasive strategy group.
  • The primary outcome was a composite of cardiovascular death or nonfatal myocardial infarction, analyzed via time-to-event methods over a median follow-up of 4.1 years.

Main Results:

  • No significant difference in the primary composite outcome was observed between the invasive (25.6%) and conservative (26.3%) strategy groups (hazard ratio, 0.94; 95% CI, 0.77 to 1.14).
  • Nonfatal myocardial infarction occurred less frequently in the invasive group (11.7%) compared to the conservative group (15.0%) (hazard ratio, 0.75; 95% CI, 0.57 to 0.99).
  • Rates of cardiovascular death were similar between groups, and procedural complications were less than 1%.

Conclusions:

  • An invasive strategy did not significantly reduce the risk of cardiovascular death or nonfatal myocardial infarction compared to a conservative strategy in older adults with NSTEMI.
  • The findings suggest that conservative management is a viable option for elderly NSTEMI patients, including those who are frail.