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SV and IVC Collapsibility Index to Predict Postinduction Hypotension

5. september 2026 opdateret af: Ain Shams University

Stroke Volume Versus Inferior Vena Cava Collapsibility Index to Predict Postinduction Hypotension in Intestinal Obstruction

Postinduction hypotension (PIH) is a frequent complication during general anesthesia. This study aims to compare the predictive effectiveness and diagnostic accuracy of stroke volume (SV) measured via left ventricular outflow tract velocity time integral (LVOT-VTI) versus the inferior vena cava collapsibility index (IVC-CI) using transthoracic echocardiography. The assessment will be conducted in adult patients with intestinal obstruction undergoing exploratory abdominal surgery under general anesthesia.

Studieoversigt

Status

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Betingelser

Detaljeret beskrivelse

Postinduction hypotension (PIH) is associated with adverse postoperative outcomes. In this diagnostic accuracy observational study, adult patients aged 40-70 years with intestinal obstruction undergoing exploratory abdominal surgery under general anesthesia will be enrolled at Ain Shams University Hospitals. Prior to induction of general anesthesia, transthoracic echocardiography (TTE) will be performed to measure the stroke volume (SV) via LVOT-VTI and the inferior vena cava collapsibility index (IVC-CI). Patients will receive standard rapid sequence induction, and hemodynamic parameters will be monitored post-induction to evaluate the predictive value, sensitivity, and specificity of SV versus IVC-CI for postinduction hypotension. Secondary outcomes including incidence of PIH, length of hospital stay, PACU recovery time, and postoperative nausea and vomiting will also be recorded.

Undersøgelsestype

Observationel

Tilmelding (Anslået)

75

Kontakter og lokationer

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Studiekontakt

Undersøgelse Kontakt Backup

  • Navn: Islam A Taher, M.D.
  • Telefonnummer: +201005629809

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

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  • Ældre voksen

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Ingen

Prøveudtagningsmetode

Ikke-sandsynlighedsprøve

Studiebefolkning

Adult patients diagnosed with intestinal obstruction scheduled for exploratory abdominal surgery under general anesthesia at Ain-Shams University Hospitals.

Beskrivelse

Inclusion Criteria:

  • Adult patients with intestinal bowel obstruction undergoing exploratory abdominal surgery under general anesthesia.
  • Age 40 to 70 years old.
  • Body Mass Index (BMI) = 18 to 25 kg/m2.
  • American Society of Anesthesiologists (ASA) physical status grade I or II.

Exclusion Criteria:

  • American Society of Anesthesiologists (ASA) physical status grade >= III.
  • Patients in whom the IVC cannot be visualized or patients with poor echogenicity.
  • Patients with hemodynamic instability.
  • Patients with vascular, respiratory, or cardiac diseases (e.g., cardiomyopathy, heart valve disease, arrhythmia, or bad exercise tolerance).
  • Pregnant patients.
  • Difficult airway or multiple intubatio

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Diagnostic accuracy of Stroke Volume (SV) to predict post-induction hypotension.
Tidsramme: Baseline (pre-induction) and immediately post-induction.
Area under the receiver operating characteristic curve (AUC) of stroke volume measured via left ventricular outflow tract velocity-time integral (LVOT-VTI) as a predictor of post-induction hypotension.
Baseline (pre-induction) and immediately post-induction.
Diagnostic accuracy of Inferior Vena Cava Collapsibility Index (IVC-CI) to predict post-induction hypotension.
Tidsramme: Baseline (pre-induction) and immediately post-induction.
Area under the receiver operating characteristic curve (AUC) of inferior vena cava collapsibility index measured via transthoracic echocardiography (TTE) as a predictor of post-induction hypotension.
Baseline (pre-induction) and immediately post-induction.

Sekundære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Length of Hospital Stay Length of Hospital Stay
Tidsramme: From date of surgery until hospital discharge (up to 9 months).
Total duration of hospitalization from the day of surgery until discharge.
From date of surgery until hospital discharge (up to 9 months).
Time to Recovery from Post-Anesthesia Care Unit (PACU) Time to Recovery from Post-Anesthesia Care Unit (PACU)
Tidsramme: Intraoperative / immediate postoperative period until PACU discharge (up to 24 hours).

Time elapsed from patient admission to the PACU until meeting discharge criteria.

Time elapsed from patient admission to the PACU until meeting discharge criteria.
Intraoperative / immediate postoperative period until PACU discharge (up to 24 hours).
Incidence of Post-Induction Hypotension
Tidsramme: Within 3 minutes following induction of general anesthesia.
Assessment of the proportion of patients who develop post-induction hypotension, defined as SBP decrease > 30%, MAP decrease > 20% from baseline, or absolute SBP < 90 mmHg and MAP < 60 mmHg.
Within 3 minutes following induction of general anesthesia.

Samarbejdspartnere og efterforskere

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Sponsor

Ain Shams University

Efterforskere

  • Studiestol: Mohamed H Shokeir, M.D., Ph.D., Ain Shams University

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart (Anslået)

1. oktober 2026

Primær færdiggørelse (Anslået)

1. februar 2027

Studieafslutning (Anslået)

1. februar 2027

Datoer for studieregistrering

Først indsendt

29. juli 2026

Først indsendt, der opfyldte QC-kriterier

29. juli 2026

Først opslået (Faktiske)

3. august 2026

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

10. september 2026

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

5. september 2026

Sidst verificeret

1. juli 2026

Mere information

Begreber relateret til denne undersøgelse

Nøgleord

Yderligere relevante MeSH-vilkår

Andre undersøgelses-id-numre

  • FMASU MD49/2025

Plan for individuelle deltagerdata (IPD)

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INGEN

IPD-planbeskrivelse

Individual participant data will not be shared to protect patient privacy and confidentiality.

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