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The Use of Integrated Pulmonary Index During Cesarean Section Under Spinal Anesthesia

NCT05237856 · Status: UNKNOWN · Type: OBSERVATIONAL · Enrollment: 80

Last updated 2022-02-14

No results posted yet for this study

Summary

Postspinal hypotension (PSH) is a common side effect with an incidence of 15.3 to 33% that can result in organ hypoperfusion and ischemic events. In pregnant patients, this incidence may increase to 70% and severe PSH increases the risk of maternal and fetal complications. Therefore, it is extremely important for anesthesiologists to recognize PSH early and treat it quickly during cesarean sections.

Integrated pulmonary index (IPI) is an algorithm that has been used recently. IPI takes into account four parameters: respiratory rate, end tidal CO2, heart rate and O2 saturation. Capnography device measuring IPI can continuously monitor and display the patient's respiratory status in a single digit range from 1-10. This index value can be observed continuously on the monitor as digital data or as a waveform. "10" indicates a normal respiratory condition, while "1" indicates that the patient requires immediate intervention. The relationship between values and the patient status is evaluated as follows; 10 = Normal, 8-9 = Normal range, 7 = Near normal range; Requires attention, 5-6 = Requires attention and may require intervention, 3-4 = Requires intervention, 1-2 = Requires immediate intervention.

IPI monitorization is mostly used during sedation (gastroscopy, cardioversion), intensive care units (for adjusting mechanical ventilator settings, monitoring the weaning process).

As a result, IPI monitoring has attracted attention because it allows non-invasive, dynamic and real-time measurement, reflects respiratory status with high specificity and sensitivity, and enables respiratory problems to be detected earlier.

End tidal CO2, which is one of the 4 parameters that IPI value takes into account, is a parameter that can be used to evaluate the effectiveness of ventilation, but is also related to cardiac output (CO) because the delivery of CO2 to the pulmonary system depends on it. Studies have shown that ETCO2 value correlatively decreases when CO decrease, in cases such as hypotension and hypovolemia.

We think that ETCO2 will decrease due to pulmonary hypoperfusion in post spinal hypotension and it may cause a change in IPI value. In our study, we will monitor patients who are scheduled for cesarean section under spinal anesthesia with a capnometry device and we will try to determine the significance of IPI monitorization in predicting hypotension.

Conditions

  • Intraoperative Hypotension

Interventions

DEVICE

Capnometry Monitorization

After spinal anesthesia, a non-invasive nasal cannula will be applied to the patient, ETCO2 and IPI values will be continuously measured and recorded from this cannula with a capnometry device.

Sponsors & Collaborators

  • Selcuk University

    lead OTHER

Eligibility

Min Age
18 Years
Max Age
45 Years
Sex
FEMALE
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2022-02-01
Primary Completion
2022-08-01
Completion
2022-11-01

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT05237856 on ClinicalTrials.gov