Related Experiment Video

Updated: Jul 14, 2026

Surgical Porcine Model of Chronic Myocardial Ischemia Treated by Exosome-laden Collagen Patch and Off-pump Coronary Artery Bypass Graft
05:25

Surgical Porcine Model of Chronic Myocardial Ischemia Treated by Exosome-laden Collagen Patch and Off-pump Coronary Artery Bypass Graft

Published on: September 15, 2023

Early postoperative cognitive dysfunction and blood pressure during coronary artery bypass graft operation

Rebecca F Gottesman1, Argye E Hillis, Maura A Grega

  • 1Department of Neurology, Johns Hopkins University School of Medicine, Phipps 126, 600 N Wolfe St, Baltimore, MD 21287, USA. rgottesm@jhmi.edu

Archives of Neurology
|June 15, 2007
PubMed

Insights

A drop in mean arterial pressure (MAP) during coronary artery bypass graft surgery may increase the risk of early cognitive dysfunction. Lower MAP is linked to poorer cognitive test scores post-operation.

Area of Science:

  • Cardiology
  • Neurology
  • Anesthesiology

Background:

  • Coronary artery bypass graft (CABG) operations are associated with risks of neurological complications.
  • Early cognitive dysfunction is a potential adverse outcome following cardiac surgery.

Purpose of the Study:

  • To investigate the association between changes in mean arterial pressure (MAP) during CABG surgery and the development of early cognitive dysfunction.
  • To identify potential hemodynamic predictors of postoperative cognitive impairment.

Main Methods:

  • A cohort study was conducted with fifteen high-risk patients undergoing CABG.
  • Mean arterial pressures (MAPs) were measured preoperatively and intraoperatively.
  • Cognitive function was assessed using the Mini-Mental State Examination and other tests before and after surgery.

Main Results:

  • A decrease in MAP from preoperative to intraoperative measurements correlated with a decline in Mini-Mental State Examination scores.
  • Patients experiencing a significant drop in MAP showed a worsening of cognitive performance by 1.4 points (P = .04).
  • Conversely, a smaller decrease in MAP was associated with a slight improvement in cognitive scores.

Conclusions:

  • Reduced mean arterial pressure during CABG surgery may be a risk factor for early cognitive dysfunction.
  • Monitoring and maintaining stable intraoperative blood pressure could be crucial for preserving cognitive function in CABG patients.
Abstract

Related Concept Videos

Peripheral Artery Disease V: Postoperative Nursing Management01:23

Peripheral Artery Disease V: Postoperative Nursing Management

During the postoperative period, it is crucial to focus on maintaining circulation, identifying and managing potential complications, and planning for discharge.Nursing AssessmentVital signs monitoring: Regularly monitor vital signs, including blood pressure, heart rate, respiratory rate, and temperature, to detect early signs of complications such as bleeding and infection.Circulation assessment: Monitor pulses, perform Doppler assessments, and check capillary refill, color, temperature, and...
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...
Aneurysm IV: Nursing Management01:22

Aneurysm IV: Nursing Management

Vigilant monitoring for aneurysm rupture is essential for patients undergoing aortic surgery.Preoperative Nursing ManagementContinuously monitor the patient for manifestations of aneurysm rupture, such as pallor, weakness, tachycardia, hypotension, abdominal, back, groin, or periumbilical pain, changes in consciousness, and a pulsating abdominal mass. Regularly assess the patient's peripheral pulses.Instruct the patient to consume a clear liquid diet the day before surgery and administer...
Coronary Artery Disease V: Interprofessional Care01:27

Coronary Artery Disease V: Interprofessional Care

Interprofessional care for coronary artery disease includes pharmacological therapy and revascularization procedures.Pharmacological therapy for Coronary Artery Disease (CAD) aims to manage symptoms, prevent complications, and improve patient outcomes through various classes of medications:Antiplatelet Agents:Aspirin and Clopidogrel: These medications inhibit platelet aggregation, preventing blood clots, which is crucial for avoiding heart attacks and strokes. Doctors often prescribe these...
Acute Coronary Syndrome IV: Interprofessional Care01:28

Acute Coronary Syndrome IV: Interprofessional Care

IntroductionThe management of Acute Coronary Syndrome (ACS) aims to minimize myocardial damage, preserve myocardial function, and prevent complications.Initial ManagementInpatient management involves continuous cardiac monitoring, preferably in an ICU, focusing on blood pressure, serum sodium, potassium, and creatinine levels, and urine output. Ongoing pharmacologic management is crucial for stabilizing the patient.Supplemental Oxygen: Administer supplemental oxygen if oxygen saturation is...
Cardiac Catheterization IV: Nursing Management01:26

Cardiac Catheterization IV: Nursing Management

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...