Assessing Fluid Status of Peritoneal Dialysis Patients With Assistance of Lung Ultrasound

NCT ID: NCT04176627

Last Updated: 2020-08-14

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Total Enrollment

44 participants

Study Classification

OBSERVATIONAL

Study Start Date

2019-12-02

Study Completion Date

2020-06-30

Brief Summary

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* As studied previously, lung congestion is very prevalent however usually asymptomatic in dialysis patients. Fluid overload is associated with hospitalizations, worse cardiovascular outcomes and mortality in PD patients.
* The clinical exam is the only tool used currently to monitor volume status of PD patients, and has been found to have poor sensitivity and specificity for lung congestion compared to lung ultrasound. In current practice, patients are seen and examined monthly at their home dialysis units by the nurses. The nephrologist separately examines the patient monthly, possibly days to weeks after the nurse visit, and potentially only quarterly with the use of telehealth visits.
* Lung ultrasound is a relatively simple and cheap tool to assess for lung congestion, with little inter-operator variability and good reproducibility.
* There are limited studies of lung ultrasound in peritoneal dialysis, and none in the United States. Lung ultrasound may be useful as an objective measure of lung congestion in patients without signs or symptoms of fluid overload.

Aims of this study

* This study aims to determine the prevalence of subclinical fluid overload in peritoneal dialysis patients.
* The investigators aim to determine the added benefit of lung ultrasound to standard clinical practice of fluid management in PD patients.
* The investigators aim to assess the association of patient characteristics with lung congestion.
* The investigators also aim to assess the agreement between nurse physical exam and lung ultrasound for fluid overload.

Detailed Description

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Study Design:

* Cross-sectional study, inviting PD patients at 10 Northern CA home dialysis units to participate. One-time ultrasound done during monthly nurse visit between December 2019 and March 2020. All patients present for their monthly visit at participating home dialysis units on days in which ultrasound available will be eligible, unless they had already completed an ultrasound for the study.
* Eligible patients approached for informed consent
* Ultrasound method: 28 areas of the anterior and lateral thorax examined for B lines, need at least 3 B lines in each field to be counted- recorded for future validation
* Training: lung ultrasound training modules accredited by American College of Emergency Physicians, in addition to dedicated rotation of ultrasound training during internal medicine residency.
* Separate nurse clinical evaluation- yes or no, nurse blinded from ultrasound results
* Patient characteristics obtained from dialysis EHR and form 2728: Age, gender (male sex %), race, ethnicity, case of ESRD, dialysis vintage (mo), PD modality, BMI, DM (%), SBP, DBP, albumin , # of antihypertensives, use of diuretic, use of icodextrin, PD Rx, 24 hour urine volume, lung disease (%), heart failure (%)
* Lung ultrasound info documented in EHR along with nurse evaluation. If moderate-severe lung congestion on ultrasound, nephrologist notified in person, by phone or fax.
* Prescription changes from nephrologist (diuretic adjustment, dextrose concentration change, addition of icodextrin, or none) within 2 weeks tracked in EHR and/or in person with dialysis nurse
* Sample size calculation- assuming 30% subclinical fluid overload prevalence, 95% confidence interval of prevalence of subclinical fluid overload with 10% margin of error-\> 81 patients

Conditions

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Fluid Overload Pulmonary Edema Peritoneal Dialysis Complication

Study Design

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Observational Model Type

COHORT

Study Time Perspective

CROSS_SECTIONAL

Interventions

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Lung ultrasound

One-time lung ultrasound study completed on peritoneal dialysis patients at monthly clinic visit

Intervention Type DEVICE

Eligibility Criteria

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Inclusion Criteria

* Peritoneal dialysis patients seen at participating Wellbound clinics in Northern California, present for monthly visit on days in which lung ultrasound available

Exclusion Criteria

* Age \<18, on peritoneal dialysis \<3 mo, symptomatic lung congestion (reporting new or worsening shortness of breath over the past 4 weeks on enrollment), patient or nephrologist unwilling to participate in study
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Satellite Healthcare

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Wael Hussein, MBBS, MSc

Role: PRINCIPAL_INVESTIGATOR

Stanford University, Satellite Healthcare

Locations

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WellBound Daly City

Daly City, California, United States

Site Status

Satellite WellBound Emeryville

Emeryville, California, United States

Site Status

Satellite WellBound Fremont

Fremont, California, United States

Site Status

Satellite WellBound Milpitas

Milpitas, California, United States

Site Status

WellBound Modesto

Modesto, California, United States

Site Status

WellBound North Modesto

Modesto, California, United States

Site Status

Satellite WellBound Mountain View

Mountain View, California, United States

Site Status

WellBound Sacramento

Sacramento, California, United States

Site Status

WellBound San Francisco

San Francisco, California, United States

Site Status

Satellite WellBound San Jose

San Jose, California, United States

Site Status

WellBound San Leandro

San Leandro, California, United States

Site Status

Satellite WellBound San Mateo

San Mateo, California, United States

Site Status

Wellbound Santa Cruz

Santa Cruz, California, United States

Site Status

WellBound Santa Rosa

Santa Rosa, California, United States

Site Status

WellBound Stockton

Stockton, California, United States

Site Status

WellBound Vallejo

Vallejo, California, United States

Site Status

Countries

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United States

References

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Panuccio V, Enia G, Tripepi R, Torino C, Garozzo M, Battaglia GG, Marcantoni C, Infantone L, Giordano G, De Giorgi ML, Lupia M, Bruzzese V, Zoccali C. Chest ultrasound and hidden lung congestion in peritoneal dialysis patients. Nephrol Dial Transplant. 2012 Sep;27(9):3601-5. doi: 10.1093/ndt/gfs116. Epub 2012 May 9.

Reference Type RESULT
PMID: 22573237 (View on PubMed)

Torino C, Gargani L, Sicari R, Letachowicz K, Ekart R, Fliser D, Covic A, Siamopoulos K, Stavroulopoulos A, Massy ZA, Fiaccadori E, Caiazza A, Bachelet T, Slotki I, Martinez-Castelao A, Coudert-Krier MJ, Rossignol P, Gueler F, Hannedouche T, Panichi V, Wiecek A, Pontoriero G, Sarafidis P, Klinger M, Hojs R, Seiler-Mussler S, Lizzi F, Siriopol D, Balafa O, Shavit L, Tripepi R, Mallamaci F, Tripepi G, Picano E, London GM, Zoccali C. The Agreement between Auscultation and Lung Ultrasound in Hemodialysis Patients: The LUST Study. Clin J Am Soc Nephrol. 2016 Nov 7;11(11):2005-2011. doi: 10.2215/CJN.03890416. Epub 2016 Sep 22.

Reference Type RESULT
PMID: 27660305 (View on PubMed)

Zoccali C, Torino C, Tripepi R, Tripepi G, D'Arrigo G, Postorino M, Gargani L, Sicari R, Picano E, Mallamaci F; Lung US in CKD Working Group. Pulmonary congestion predicts cardiac events and mortality in ESRD. J Am Soc Nephrol. 2013 Mar;24(4):639-46. doi: 10.1681/ASN.2012100990. Epub 2013 Feb 28.

Reference Type RESULT
PMID: 23449536 (View on PubMed)

Gargani L, Sicari R, Raciti M, Serasini L, Passera M, Torino C, Letachowicz K, Ekart R, Fliser D, Covic A, Balafa O, Stavroulopoulos A, Massy ZA, Fiaccadori E, Caiazza A, Bachelet T, Slotki I, Shavit L, Martinez-Castelao A, Coudert-Krier MJ, Rossignol P, Kraemer TD, Hannedouche T, Panichi V, Wiecek A, Pontoriero G, Sarafidis P, Klinger M, Hojs R, Seiler-Mussler S, Lizzi F, Onofriescu M, Zarzoulas F, Tripepi R, Mallamaci F, Tripepi G, Picano E, London GM, Zoccali C. Efficacy of a remote web-based lung ultrasound training for nephrologists and cardiologists: a LUST trial sub-project. Nephrol Dial Transplant. 2016 Dec;31(12):1982-1988. doi: 10.1093/ndt/gfw329. Epub 2016 Sep 26.

Reference Type RESULT
PMID: 27672089 (View on PubMed)

Other Identifiers

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SIH_122_Fluid-PLUS

Identifier Type: -

Identifier Source: org_study_id

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