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Effect of Oral Water in Healthy Volunteers on Cardiac Output, Regional Flow and Microcirculation in Healthy Volunteers

Effect of Oral Water in Healthy Volunteers on Cardiac Output, Regional Flow and Microcirculation in Healthy Volunteers

Status
Completed
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05153837
Acronym
WATERNAL
Enrollment
59
Registered
2021-12-10
Start date
2021-11-30
Completion date
2023-08-28
Last updated
2025-05-28

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

Conditions

Intravenous Fluids, Pharmacodynamics, Fluid Therapy, Fluid Responsiveness, Fluid Challenge

Keywords

intravenous fluids, pharmacodynamics, fluid therapy, fluid responsiveness, fluid challenge

Brief summary

Human digestive system physiologically ensures the absorption of oral water and hydration of the human body. Water is quickly absorbed by the digestive tract with a peak between 15 and 20 minutes. It has demonstrated that oral water remains the best hydration solution that have an effect on plasma volume expansion and cardiovascular system during exercise. While the cardiovascular effect of fluid expansion by saline serum is well known (venous return, preload and cardiac output), effect of oral water varies in the literature depending on the physiological state of the patient and the clinical state. Thus, the investigators aim to investigate oral water effects on fluid responsiveness, regional blood flow and microcirculatory changes.

Interventions

OTHERsaline intravenous administration

Administration of 500 mL of saline (NaCl 0.9%) administered by the venous route

500 ml oral water

Sponsors

Centre Hospitalier Universitaire, Amiens
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
OTHER
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to 30 Years
Healthy volunteers
Yes

Inclusion criteria

* Healthy volunteer subject between 18 and 30 years old * patient with a regular sinus rhythm * Echogenic subject. * Fasting of solid and liquid since 8 h * Subject in regular sinus rhythm. * Written consent signed.

Exclusion criteria

* Any known cardiac, renal or endocrine pathology. * Arrhythmia rhythm disorder by atrial fibrillation * Pregnant or nursing woman. * Pathology versus indicating Nacl administration. * Person under tutors or curators or deprived of liberty. * Person not affiliated to a social security scheme.

Design outcomes

Primary

MeasureTime frame
number of fluid responders 30 minutes after fluid expansion30 minutes after fluid expansion

Countries

France

Outcome results

None listed

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