Related Experiment Video
Updated: Jun 4, 2026
07:28
Donor Posterior Atrial Flap Rotation for Left Atrial Cuff Reconstruction in Lung Transplantation
Published on: October 11, 2024
Tissue oxygen saturation and outcome after cardiac surgery
Julie Sanders1, Iqbal Singh Toor, Teresa M Yurik
1Institute for Human Health and Performance, University College London, United Kingdom. j.sanders@ucl.ac.uk
Summary
Reduced muscle tissue oxygen saturation during cardiac surgery may indicate poor postoperative recovery. Monitoring oxygen saturation can help identify patients at higher risk for complications after surgery.
Area of Science:
- Cardiovascular Surgery
- Physiology
- Medical Monitoring
Background:
- Cardiopulmonary bypass can cause oxygen supply-demand imbalance.
- This imbalance leads to decreased tissue oxygen saturation, termed "tissue shock."
- Tissue shock may negatively impact postoperative recovery.
Purpose of the Study:
- To investigate the link between tissue oxygen saturation changes and postoperative outcomes.
- To assess the predictive value of tissue oxygen saturation for recovery after cardiac surgery.
Main Methods:
- Near-infrared spectroscopy (NIRS) monitored thenar eminence tissue oxygen saturation in 74 adult cardiac surgery patients.
- Measurements were taken pre-anesthesia, during surgery, and up to 24 hours postoperatively in the ICU.
- Collected data was correlated with postoperative patient outcomes.
Main Results:
- Mean tissue oxygen saturation decreased significantly during surgery and upon ICU arrival.
- Lower mean saturation during early anesthesia and in the ICU was associated with increased postoperative morbidity.
- Specifically, lower saturation on day 15 (81.1% vs 87.6%) and day 3 (72.9% vs 85.5%) correlated with poorer outcomes.
Conclusions:
- Reduced thenar eminence tissue oxygen saturation in cardiac surgery patients may predict adverse postoperative outcomes.
- Further research is required to validate these findings.
- Investigating interventions to optimize oxygen delivery and consumption balance is warranted to improve both saturation and patient outcomes.
More Related Videos
Related Concept Videos
01:24Pulse Oximetry
Pulse oximetry, or SpO2, is a non-invasive method for continuously monitoring arterial oxygen saturation (SaO2). This procedure involves attaching a probe or sensor to the patient's fingertip, forehead, earlobe, or nose bridge. The sensor works by detecting changes in oxygen saturation levels through light signals generated by the oximeter and reflected by the pulsing blood under the probe.
Purpose
Average SpO2 values are greater than 95%. If the readings fall below 90%, it indicates that...
Purpose
Average SpO2 values are greater than 95%. If the readings fall below 90%, it indicates that...
01:17Assessment of Diffusion and Perfusion
Understanding and evaluating diffusion and perfusion is critical in assessing a patient's respiratory and circulatory health. These processes play key roles in maintaining the body's internal environment, ensuring that tissues receive adequate oxygen while waste products are efficiently removed.
The Role of Diffusion in Respiration
Diffusion is the process by which molecules move from an area of higher concentration to an area of lower concentration. In the respiratory system, this principle...
The Role of Diffusion in Respiration
Diffusion is the process by which molecules move from an area of higher concentration to an area of lower concentration. In the respiratory system, this principle...
01:28Cardiomyopathy 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...
01:19Guidelines For Measuring Vital Signs
Following these guidelines can help nurses accurately measure vital signs, assess changes in patient conditions, and provide timely treatment when necessary. Adhering closely to the guidelines ensures the accuracy and reliability of the results.
Before taking a patient's vital signs, a nurse would consider and assess the patient's comfort level and ensure appropriate equipment is available.
Before taking a patient's vital signs, a nurse would consider and assess the patient's comfort level and ensure appropriate equipment is available.
01:19Special considerations while measuring oxygen saturation
Assessing respiratory rate concurrently with pulse measurement is fundamental to patient care, providing valuable insights into the patient's respiratory function. The normal breathing rate for an adult usually falls within a normal range of 12 to 20 breaths per minute. Abnormal respiratory rates can signal underlying health conditions or the need for immediate intervention.
Ensuring accuracy in vital sign recordings while prioritizing patient comfort and minimizing anxiety is important.
Ensuring accuracy in vital sign recordings while prioritizing patient comfort and minimizing anxiety is important.
01:23Peripheral 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...