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Cardiomyopathy VII: Pre and Post Operative Nursing Management01:28

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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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Related Experiment Video

Updated: May 21, 2026

A Pre-clinical Rat Model for the Study of Ischemia-reperfusion Injury in Reconstructive Microsurgery
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Microcirculation and macrocirculation in cardiac surgical patients.

Elli-Sophia Tripodaki1, Athanasios Tasoulis, Antigoni Koliopoulou

  • 1First Critical Care Department, Evangelismos Hospital, National and Kapodistrian University of Athens, Ypsilantou 45-47, 106 75 Athens, Greece.

Critical Care Research and Practice
|June 22, 2012
PubMed
Summary

Microcirculatory changes after open cardiac surgery impact organ perfusion. Assessing tissue oxygenation with near-infrared spectroscopy and vascular occlusion technique helps predict patient outcomes.

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Area of Science:

  • Cardiovascular Surgery
  • Critical Care Medicine
  • Physiology

Background:

  • Open cardiac surgery can lead to microcirculatory dysfunctions.
  • Understanding the interplay between microcirculation and macrohemodynamics is crucial for patient management.

Purpose of the Study:

  • To investigate the relationship between microcirculatory alterations, macrohemodynamics, and organ perfusion after open cardiac surgery.

Main Methods:

  • Near-infrared spectroscopy (NIRS) and vascular occlusion technique (VOT) were used to assess microcirculation.
  • 23 patients undergoing open cardiac surgery were enrolled.

Main Results:

  • Cardiac index correlated with tissue oxygen consumption and reperfusion rates.
  • Oxygen delivery and consumption also correlated with these microcirculatory parameters.
  • Tissue oxygen saturation was linked to peak lactate levels, and microcirculatory parameters differed between survivors and non-survivors.

Conclusions:

  • Microcirculatory alterations post-open cardiac surgery are associated with macrohemodynamics and global organ perfusion indices.
  • NIRS and VOT can provide valuable insights into patient recovery and outcomes.