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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...
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Managing cardiomyopathy involves addressing underlying or precipitating causes, treating heart failure with medications, and implementing dietary changes and a balanced exercise and rest regimen.Lifestyle ModificationsCardiomyopathy patients should adopt a low-sodium diet to reduce fluid retention and manage heart failure. A personalized exercise and rest plan helps maintain physical fitness without overstraining the heart. Avoiding alcohol and tobacco is essential to prevent further damage to...
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Nursing responsibilities before cardiac catheterization include:Assess for allergies and establish baseline health status.Before cardiac catheterization, assess the patient for allergies to contrast dye. Perform a comprehensive baseline assessment, including vital signs, heart and breath sounds, and a neurovascular assessment of the extremities, noting distal pulses, skin color, and temperature. Instruct the patient to fast for 8-12 hours before the procedure. Evaluate baseline laboratory...
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Updated: Apr 12, 2026

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Rethinking Lactate in Cardiac Surgery and Intensive Care.

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This summary is machine-generated.

Lactate is more than a waste product; it

Keywords:
continuous lactate monitoringhyperlactatemialactatelactate clearancelactate/pyruvate ratiomicrocirculationwearable device

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Area of Science:

  • Physiology
  • Biochemistry
  • Critical Care Medicine

Background:

  • Traditionally, lactate was viewed as a metabolic byproduct indicating tissue hypoxia.
  • This perspective is challenged by contemporary research.
  • Established interpretations in cardiac surgery and intensive care are being re-evaluated.

Purpose of the Study:

  • To synthesize evidence on lactate's multifaceted roles.
  • To reinterpret perioperative hyperlactatemia in cardiac surgery.
  • To explore continuous lactate monitoring applications.

Main Methods:

  • Narrative review of existing literature.
  • Synthesis of evidence from exercise physiology, biochemistry, cardiac anesthesia, and intensive care.
  • Analysis of lactate's roles as fuel, shuttle, and signaling molecule.

Main Results:

  • Lactate functions as a crucial fuel source.
  • Lactate acts as an important shuttle molecule.
  • Lactate plays a role in cellular signaling pathways.

Conclusions:

  • Lactate's role extends beyond anaerobic metabolism.
  • Reinterpreting hyperlactatemia in perioperative settings is essential.
  • Continuous lactate monitoring offers promising clinical opportunities.