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Pleth Variability Index clinical trials

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NCT ID: NCT06407362 Completed - Perfusion Index Clinical Trials

Effects of Volume and Pressure-Controlled Ventilation on Cerebral SpO2, PI, and PVI Index in Septoplasty

Start date: May 15, 2021
Phase:
Study type: Observational

Objective: This study was designed to evaluate the accuracy of Pleth Variability Index (PVI), Perfusion Index (PI) and Regional Oxygen Saturation (rSO2) in both ventilation modes in patients undergoing septorhinoplasty operation under general anaesthesia. Materials and Methods: After anaesthesia induction, ventilation was provided with volume control for 20 minutes. Heart Rate (HR), PI, PVI, Oxygen Saturation (SpO2), Non-Invasive Blood Pressure (NIBP) and rSO2 values were recorded every 5 minutes. At the 20th minute of the surgical procedure, the ventilation mode was set as the pressure-controlled mode. After switching to pressure-controlled mode, HR, PI, PVI, SpO2, NIBP and rSO2 values were recorded every 5 minutes for 20 minutes.

NCT ID: NCT06351241 Completed - Perfusion Index Clinical Trials

Hemodynamic Effects of Steep Trendelenburg Position and Pneumoperitoneum

Start date: November 29, 2022
Phase:
Study type: Observational [Patient Registry]

BACKGROUND: The steep Trendelenburg position and pneumoperitoneum are used to improve surgical visibility in robot-assisted laparoscopic radical prostatectomy (RALRP). However, these procedures can lead to hemodynamic changes. This study aimed to investigate the effects of these interventions on the perfusion index (PI) and the Pleth variability index (PVI) in patients undergoing RALRP under general anesthesia. METHODS: Fifty-three patients scheduled for RALRP underwent standard monitoring; PI and PVI values were monitored using a finger probe. PI, PVI, hemodynamic and respiratory parameters, and intraabdominal pressure were recorded before and after anesthesia induction, after adopting the Trendelenburg position, after pneumoperitoneum, after pneumoperitoneum and the Trendelenburg position, at 15 min, 30 min, in the supine position, after carbon dioxide (CO2) desufflation, and after extubation.

NCT ID: NCT05050552 Completed - Clinical trials for One-Lung Ventilation

Oxygen Reserve Index in One-Lung Ventilation During Elective Thoracic Operations

Start date: March 1, 2020
Phase:
Study type: Observational [Patient Registry]

The investigators' goal is to perform an observational cohort study investigating the use of oxygen reserve index (ORi) in patients undergoing elective thoracic surgery and one-lung ventilation (OLV). For this purpose, ORi values are recorded and compared to the other collected hemodynamical and oximeter parameters. The primary hemodynamic parameters include heart rate (HR) and blood pressure (BP), while; oximeter device-related parameters include peripheral oxygen saturation, perfusion index (PI), and pleth variability index (PVI). The investigators' secondary goal is to investigate relationships between these hemodynamical and oximeter parameters using statistical analysis methods.

NCT ID: NCT04939129 Recruiting - Clinical trials for Fluid Responsiveness

Evaluation of Fluid Responsiveness With Pulse Variation Index and Systolic Blood Pressure Changes After Lung Recruitment Maneuver

Start date: June 15, 2021
Phase:
Study type: Observational

Evaluation of Fluid Responsiveness With Pulse Variation Index and Systolic Blood Pressure Changes After Lung Recruitment Maneuver

NCT ID: NCT04373213 Not yet recruiting - Clinical trials for Pleth Variability Index

Evaluation of the Fluid Response of SARS-CoV-2 (COVID-19) Patients in Intensive Care; Pleth Variability Index

Start date: May 5, 2020
Phase:
Study type: Observational

In this study; We aimed to investigate the role of pleth variability index, which is a noninvasive method, in showing fluid response in SARS-CoV-2 (COVID-19) patients, which we know is appropriate fluid management.

NCT ID: NCT03956186 Completed - Hypotension Clinical Trials

Can Right Toe Perfusion Index or Pleth Variability Index Predict Spinal Anesthesia Induced Hypotension?

Start date: May 21, 2019
Phase:
Study type: Observational

Spinal anesthesia for caesarean section is associated with a decrease in systemic vascular resistance and cardiac output and may cause hypotension in a significant portion of the parturients. Hypotension during delivery may cause maternal and fetal complications. If parturients who are likely to develop hypotension after spinal anesthesia can be identified before surgery, anesthesiologists would have opportunity to take measures such as prophylactic vasopressor administration. Perfusion index (PI) measured by pulse oximetry reflects vasomotor tone which affects the degree of hypotension after spinal anesthesia. This is a non-invasive method of assessing the relative vascular tone with the use of pulse oximeter which calculates the ratio of pulsatile versus the non-pulsatile component of the blood flow. A lower PI indicates greater peripheral vasomotor tone. Pleth variability index (PVI) is calculated using maximum and minimum values of perfusion index during respiratory cycles. PVI is one of the dynamic indices that can predict fluid responsiveness. There are several studies investigating the predictive value of finger PI and PVI on hypotension after spinal anesthesia. However the aortocaval compression by the gravid uterus directly effects the lower extremity perfusion. So, in this study we aimed to investigate whether the right toe PI and PVI values at supine and left lateral positions can predict hypotension during caesarean section.

NCT ID: NCT03864692 Completed - Hypotension Clinical Trials

Prediction of Hypotension Using Perfusion Index and Pleth Variability Index After Spinal Anesthesia for C/S

Start date: January 22, 2019
Phase:
Study type: Observational

Spinal anesthesia for caesarean section is associated with a decrease in systemic vascular resistance and cardiac output and may cause hypotension in a significant portion of the parturients. Hypotension during delivery may cause maternal and fetal complications. If parturients who are likely to develop hypotension after spinal anesthesia can be identified before surgery, anesthesiologists would have opportunity to take measures such as prophylactic vasopressor administration. Perfusion index (PI) measured by pulse oximetry reflects vasomotor tone which affects the degree of hypotension after spinal anesthesia. This is a non-invasive method of assessing the relative vascular tone with the use of pulse oximeter which calculates the ratio of pulsatile versus the non-pulsatile component of the blood flow. A lower PI indicates greater peripheral vasomotor tone. Pleth variability index (PVI) is calculated using maximum and minimum values of perfusion index during respiratory cycles. PVI is one of the dynamic indices that can predict fluid responsiveness. The aim of this study is to investigate whether the PI and PVI values at different patient positions can predict hypotension during caesarean section.

NCT ID: NCT02984956 Active, not recruiting - Hypotension Clinical Trials

Pleth Variability Index and Hypotension

Start date: December 2016
Phase: N/A
Study type: Observational

Correct assessment of a patient's volume status is the most important goal for an anesthetist. However, most of the variables used for fluid response evaluation are invasive and technically challenging.Pulse oximeter is a non-invasive, standardized and widely used monitoring method in many countries. Our aim in this study is to investigate the usefulness of the noninvasive pleth variability index to predict hypotension in orthopedic hip fracture patients who underwent spinal anesthesia.