Validation of a water-load protocol to define the pattern of bladder sensation

Lucena, Hayser Medina; Tincello, Douglas G.

doi:10.1007/s00192-018-3735-y

Cited by 3 publications

(4 citation statements)

References 24 publications

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“…The presentation detailed the protocol requirements for participants to drink 2 L of Gatorade G2 as quickly as possible to induce a rapid diuresis as shown in other investigations. 11 In addition, the standardized education presentation demonstrated the use of the sensation meter ( Figure 2), which enables participants to record sensation on a tablet computer by sliding a bar from 0% (defined in the presentation as a completely empty bladder) to 100% (defined in the presentation as a completely full bladder). Participants were also instructed to click on radio buttons corresponding to "first sensation," "first desire,"…”

Section: Study Visitsmentioning

confidence: 99%

“…Due to the invasiveness, patient risk, and cost of this test, non‐invasive hydration protocols have been developed to characterize real‐time bladder sensation in patients with and without OAB . Some of these studies have used a tablet‐based sensation meter that participants used to track real‐time, unprompted bladder sensation .…”

Section: Introductionmentioning

confidence: 99%

“…4,5 Due to the invasiveness, patient risk, and cost of this test, noninvasive hydration protocols have been developed to characterize realtime bladder sensation in patients with and without OAB. [6][7][8][9][10][11] Some of these studies have used a tablet-based sensation meter that participants used to track real-time, unprompted bladder sensation. 6,8 In addition, several previous studies have used three-dimensional (3D) ultrasound to measure bladder volume, 12 shape, 13 and biomechanics.…”

Section: Introductionmentioning

confidence: 99%

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Validation of a real‐time bladder sensation meter during oral hydration in healthy adults: Repeatability and effects of fill rate and ultrasound probe pressure

Sheen

Kolli

Nagle

et al. 2019

LUTS

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Objectives A non‐invasive protocol was previously developed using three‐dimensional ultrasound and a sensation meter to characterize real‐time bladder sensation. This study the protocol by measuring the effects of fill rateand ultrasound probe pressure during oral hydration. Methods Healthy volunteers with no urinary symptoms (based on International Consultation on Incontinence Questionnaire on Overactive Bladder surveys) were recruited into an oral hydration study. Throughout two complete fill–void cycles, participants drank 2 L Gatorade G2 (The Gatorade Company, Inc., Chicago, Illinois) and used a touch‐screen sensation meter to record real‐time bladder sensation (0%‐100%). The study was repeated three times, once per week (Visits A, B, and C). In Visits A and B, ultrasound was used to measure bladder volume every 5 minutes. Ultrasound was not used in Visit C except at 100% capacity. Volume data from Visit B were used to estimate volumes throughout the fills in Visit C. Sensation–capacity curves were generated for each fill for comparative analysis. Results Ten participants completed three visits (60 total fills). Increased fill rate led to decreased sensation throughout filling, andultrasound probe pressure led to increased sensation. Participants reported higher sensation at low volumes during Fill 1 of Visit A before training with the sensation meter. Sensation curves with intermittent ultrasound showed repeatability for Fill 2 in Visits A and B. Fill rate and ultrasound probe pressure affect real‐time bladder sensation during oral hydration. Conclusions This study demonstrated repeatability of real‐time bladder sensation during a two‐fill oral hydration protocol with ultrasound.

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Section: Study Visitsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Validation of a real‐time bladder sensation meter during oral hydration in healthy adults: Repeatability and effects of fill rate and ultrasound probe pressure

Sheen

Kolli

Nagle

et al. 2019

LUTS

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“…We focused on the bladder due to its proximity to the uterus, the source of patients' pain. Since there was no non-invasive task for assessing bladder interoception 40 , we conceived a novel urinary interoceptive task inspired by an already existing water load diuresis protocol 35,53 . We adapted their task to measure urinary stimuli at two stages: the maximum desire to void and the first noticeable signal of need to void.…”

Section: Introductionmentioning

confidence: 99%

Impaired Gastric and Urinary but Preserved Cardiac Interoception in Women with Endometriosis

Cantoni,

Ciccarone,

Porpora

et al. 2024

Preprint

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Endometriosis is a chronic inflammatory gynaecological condition frequently associated with chronic pelvic pain. Visceral hypersensitivity could be present, like in other chronic pain conditions, causing altered levels of interoception. So far, studies have explored interoceptive deficits in chronic pain individuals exclusively using questionnaires or cardiac interoceptive tasks. Here, we explore cardiac, gastric, and urinary domains to probe interoceptive differences between patients with endometriosis and healthy women. 30 patients and 30 controls underwent three interoceptive tasks for assessing cardiac (through Heartbeat Counting Task, HCT), gastric (through Water Load Test-II, WLT-II) domains and bladder (through a novel Urinary Interoceptive Task, UIT) domain, which has been neglected so far. Participants also completed bladder interoceptive sensibility measures and subjective pain ratings for each endometriosis symptom (i.e., dysmenorrhea, dyspareunia, dyschezia, chronic pain). A positive correlation between WLT-II and UIT emerged in all participants (R=0.47, p<0.001), indicating that the lower the gastric interoceptive abilities, the lower the urinary ones. Moreover, compared to healthy controls, women with endometriosis exhibited lower scores in WLT-II (t(58) = 4.6814, p<0.001) and UIT (t(39.931)= 5.1462, p<0.001), as well as higher scores in subjective bladder sensibility questions (t(57.346)= -4.0304, p<0.001). UIT scores were associated with pain symptoms. Results indicate a dissociation between patients’ poor objective performance on interoceptive tasks and their high bladder interoceptive sensibility. UIT scores were associated with pain symptoms, suggesting that patients, probably due to sensitisation, struggle to ignore painful sensations, resulting in reduced accuracy in detecting physiological signals from the pelvic area.

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Ultrasound Urodynamics: A Review of Ultrasound Imaging Techniques for Enhanced Bladder Functional Diagnostics

McCormack,

Hampton,

Speich

et al. 2024

Curr Bladder Dysfunct Rep

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Purpose of Review Invasive urodynamics are currently used to diagnose disorders of bladder function. However, due to patient discomfort as well as artifacts induced by catheters and non-physiologic filling, less invasive screening tools that can improve diagnostic information, such as ultrasound are required. The purpose of this review is to assess different modalities of ultrasound as applied to functional bladder imaging. This information will help guide future studies in the use of ultrasound during urodynamics. Recent Findings Recently, multiple studies have employed ultrasound to evaluate bladder volume, wall thickness, shape, vibrometry, elastography, compliance, biomechanics, and micromotion during urodynamics. These new techniques have used both 2D and 3D ultrasound techniques to evaluate bladder changes during filling. Continued research is needed to confirm ongoing findings prior to widespread incorporation into clinical practice. Summary This review demonstrates the potential use of ultrasound as an adjunct to urodynamics for the diagnostic evaluation of functional bladder disorders.

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Validation of a water-load protocol to define the pattern of bladder sensation

Abstract: This refined protocol reliably produced stable diuresis with a water load of 300 ml/15 min, excluding those with a difference in diuresis rate > 4.5 ml/min.

Cited by 3 publications

References 24 publications

Validation of a real‐time bladder sensation meter during oral hydration in healthy adults: Repeatability and effects of fill rate and ultrasound probe pressure

Validation of a real‐time bladder sensation meter during oral hydration in healthy adults: Repeatability and effects of fill rate and ultrasound probe pressure

Impaired Gastric and Urinary but Preserved Cardiac Interoception in Women with Endometriosis

Ultrasound Urodynamics: A Review of Ultrasound Imaging Techniques for Enhanced Bladder Functional Diagnostics

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