[Tissue oxygen saturation in the critically ill patient].
G Gruartmoner1, J Mesquida1, F Baigorri2
1Centre de Crítics, Hospital de Sabadell, Corporació Sanitària i Universitària Parc Taulí, Sabadell, Barcelona, España.
Medicina Intensiva
|September 17, 2013
Summary
Hemodynamic resuscitation normalizes pressure and flow, but persistent microcirculatory issues impact patient outcomes. Near-infrared spectroscopy offers a noninvasive tool to monitor tissue oxygenation and guide shock resuscitation.
Area of Science:
- Critical care medicine
- Physiology
- Biomedical engineering
Context:
- Hemodynamic resuscitation aims to restore macrocirculatory function (pressure, flow).
- Persistent microcirculatory dysfunction despite normalized global parameters is linked to poor prognosis in critically ill patients.
- There is a growing need for technologies to assess regional and microcirculatory perfusion.
Purpose:
- To review the current evidence on near-infrared spectroscopy (NIRS).
- To explore the potential clinical applications of NIRS in the resuscitation of critically ill patients in shock.
Summary:
- Near-infrared spectroscopy (NIRS) is a noninvasive technology that measures tissue oxygen saturation.
- NIRS provides continuous, easily obtainable data on regional circulation.
- This review synthesizes existing research on NIRS for monitoring shock resuscitation.
Impact:
- NIRS may offer a valuable tool for optimizing resuscitation strategies by assessing regional tissue perfusion.
- Improved monitoring of microcirculation could lead to better patient outcomes in shock.
- This technology has the potential to guide therapeutic interventions beyond traditional hemodynamic parameters.
Related Concept Videos
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.
01:24Pulse 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...
01:19Guidelines 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.
01:17Assessment 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...
01:23Hypoxia
Hypoxia is a medical condition characterized by an inadequate oxygen supply to body tissues. It typically manifests as a bluish discoloration of the skin and mucosae, especially in fair-skinned individuals, when hemoglobin (Hb) saturation drops below 75%.
Types of Hypoxia
There are four primary types of hypoxia, each resulting from a different cause:
1. Anemic hypoxia: This type occurs due to insufficient oxygen delivery caused by a lack of red blood cells (RBCs) or RBCs with abnormal or...
Types of Hypoxia
There are four primary types of hypoxia, each resulting from a different cause:
1. Anemic hypoxia: This type occurs due to insufficient oxygen delivery caused by a lack of red blood cells (RBCs) or RBCs with abnormal or...
01:23Acute Respiratory Failure-IV
Respiratory failure can manifest suddenly or gradually, characterized by a rapid decline in PaO2 and a rapid rise in PaCO2. This situation indicates a severe respiratory problem that may quickly become a life-threatening emergency. One of the early signs of hypoxemic Acute Respiratory Failure (ARF) is a change in mental status due to the brain's sensitivity to oxygen levels and changes in acid-base balance. Symptoms such as restlessness, confusion, and agitation suggest inadequate oxygen...