SVV and PPV Predict Fluid Responsiveness in Mechanically Ventilated Elderly Patients Under General Anesthesia

Stroke Volume Variation and Pulse Pressure Variation Predict Fluid Responsiveness in Mechanically Ventilated Elderly Patients Under General Anesthesia

Status

UNKNOWN

Phases

Study type

Interventional

Source

ClinicalTrials.gov

Registry ID

NCT04388995

Enrollment

Registered

2020-05-15

Start date

2020-05-12

Completion date

2020-08-31

Last updated

2020-08-26

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Stroke Volume Variation, Pulse Pressure Variation, Fluid Responsiveness, Fluid Therapy

Brief summary

Although individualized or goal-directed approach has been advocated, a reliable index is still required to help monitor the volume status timely and efficiently. Dynamic indexes, such as pulse pressure variation (PPV) and stroke volume variation (SVV), have been shown to be clearly superior to more commonly measured static preload variables, such as pulmonary artery occlusion pressure (PAOP) and central venous pressure (CVP). The reliability of dynamic indexes in monitoring the volume status and predicting fluid responsiveness have been validated. Fluid optimization guided by SVV and PPV is beneficial to hemodynamic stability and can decrease mortality and reduce postoperative complications. However, the usefulness of dynamic indexes in elderly patients has not been previously investigated. This study aimed to evaluate whether dynamic indexes PPV and SVV can reliably predict fluid responsiveness in elderly patients, and to determine their thresholds in elderly patients.

Interventions

DIAGNOSTIC_TESTvolume expansion

volume expansion with 6% hydroxyethyl starch (7 mL/kg) at a rate of 0.4 mL/kg/min

Study design

Allocation

Intervention model

SINGLE_GROUP

Primary purpose

DIAGNOSTIC

Masking

NONE

Eligibility

Sex/Gender

ALL

Age

16 Years to 80 Years

Healthy volunteers

Inclusion criteria

* 1.Patients undergoing gastrointestinal surgery 2.Age between 18 and 80 3.ASA I \ II. 4.BMI 18 \ 24 kg/m2

Exclusion criteria

* 1.arrhythmias 2.intracardiac shunts 3.severe hypertension (SBP ≥ 160 mmHg or DBP ≥ 100 mmHg) 4.pulmonary hypertension 5.chronic obstructive pulmonary disease 6.peripheral vascular obstructive disease 7.receiving long-term treatment with vasopressors.

Design outcomes

Primary

Measure	Time frame	Description
Fluid responsiveness	immediately after the fluid therapy	Fluid responsiveness was defined as an increase in CI ≥15%

Countries

China

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026