Related Experiment Videos

The impact of aortic manipulation on neurologic outcomes after coronary artery bypass surgery: a risk-adjusted study

Emmanouil I Kapetanakis1, Sotiris C Stamou, Mercedes K C Dullum

  • 1Department of Surgery, Section of Cardiac Surgery, Washington Hospital Center, Washington, DC 20010-2975, USA.

The Annals of Thoracic Surgery
|October 30, 2004
PubMed

Insights

Minimizing aortic manipulation during coronary artery bypass grafting (CABG) surgery significantly reduces the risk of postoperative stroke. Higher levels of aortic manipulation correlate with increased stroke incidence, highlighting the benefit of off-pump CABG techniques.

Area of Science:

  • Cardiovascular Surgery
  • Neurology
  • Vascular Surgery

Background:

  • Cerebral embolization from aortic plaque is a key cause of stroke after conventional coronary artery bypass grafting (CABG).
  • Off-pump CABG (OPCABG) surgery minimizes aortic manipulation, potentially reducing stroke rates.
  • This study investigated the relationship between aortic manipulation extent and neurologic outcomes in CABG patients.

Purpose of the Study:

  • To examine the impact of varying degrees of aortic manipulation during CABG on the incidence of postoperative stroke.
  • To compare stroke rates across different CABG techniques based on aortic manipulation levels.

Main Methods:

  • A retrospective analysis of 7,272 isolated CABG patients from January 1998 to June 2002.
  • Categorization of surgeries into three groups based on aortic manipulation: full plus tangential clamp (on-pump), tangential clamp only (OPCABG), and "aortic no-touch" (OPCABG).
  • Risk-adjusted logistic regression analysis to determine the likelihood of postoperative stroke for each technique, using established and identified risk factors.

Main Results:

  • Univariable analysis showed a significant increase in stroke incidence with greater aortic manipulation (0.8% to 2.2%, p < 0.01).
  • Logistic regression revealed patients with full and tangential clamping were 1.8 times more likely to have a stroke than those with no aortic manipulation (95% CI: 1.15-2.74, p < 0.01).
  • Patients with full and tangential clamping had a 1.7 times higher stroke risk compared to those with only tangential clamping (95% CI: 1.11-2.48, p < 0.01).

Conclusions:

  • Aortic manipulation during CABG is a significant contributing factor to postoperative strokes.
  • The incidence of postoperative stroke is directly proportional to the extent of aortic manipulation performed during CABG surgery.
Abstract

Related Concept Videos

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...
Aneurysm III: Interprofessional Care01:26

Aneurysm III: Interprofessional Care

Aneurysm management involves either conservative medical therapy or surgical intervention, depending on the size and symptoms of the aneurysm. Conservative management is generally reserved for smaller, asymptomatic aneurysms, while larger or symptomatic aneurysms often necessitate surgical repair.Conservative Medical TherapyFor small, asymptomatic aneurysms, particularly abdominal aortic aneurysms (AAA) less than 5.5 centimeters in diameter, conservative medical therapy is recommended. This...
Aortic Regurgitation III: Medical Management01:25

Aortic Regurgitation III: Medical Management

Aortic regurgitation (AR) is when the aortic valve does not close or seal properly, leading to backward blood circulation from the aorta into the left ventricle during diastole. Common causes of AR include rheumatic heart disease, congenital valve defects, and aortic root dilation. Managing AR requires a multifaceted approach to alleviate symptoms, preserve left ventricular function, and address the underlying cause of the regurgitation. Patients with symptomatic AR or significant left...