scholarly journals A Prospective Comparative Study of Mobile Acoustic Uroflowmetry and Conventional Uroflowmetry

2021 ◽  
Vol 25 (4) ◽  
pp. 355-363 ◽  
Author(s):  
Dong-Gi Lee ◽  
Jonathan Gerber ◽  
Vinaya Bhatia ◽  
Nicolette Janzen ◽  
Paul F. Austin ◽  
...  
Keyword(s):  
Flow Rate ◽  
Pediatric Patients ◽  
Intraclass Correlation ◽  
Maximum Flow ◽  
Strong Correlations ◽  
Average Flow Rate ◽  
Altman Plot ◽  
Prospective Comparative Study ◽  
Male Patients ◽  
Good Agreement

Purpose: The aim of this study was to assess the performance of a mobile acoustic Uroflowmetry (UFM) application compared with standard UFM in the pediatric population.Methods: A mobile acoustic UFM application represents a noninvasive method to estimate the urine flow rate by recording voiding sounds with a smartphone. Male pediatric patients who were undergoing UFM testing were prospectively recruited, and the voiding sounds were recorded and analyzed. The intraclass correlation coefficient (ICC) was used to compare the maximum flow rate (Qmax), average flow rate (Qavg), voiding time (VT), and voiding volume (VV) as estimated by acoustic UFM with those calculated by standard UFM. Differences in Qmax, Qavg, VT, and VV between the 2 UFM tests were determined using 95% Bland-Altman limits of agreement.Results: A total of 16 male patients were evaluated. Their median age was 9 years. With standard UFM, the median Qmax, Qavg, VT, and VV were 18.7 mL/sec, 11.1 mL/sec, 15.2 seconds, and 157.8 mL, respectively. Strong correlations were observed between the 2 methods for Qmax (ICC=0.755, P=0.005), VT (ICC=0.974, P<0.001), and VV (ICC=0.930, P<0.001), but not for Qavg (ICC=0.442, P=0.135). The Bland-Altman plot showed good agreement between the 2 UFM tests. Flow patterns recorded by acoustic UFM and conventional UFM showed good visual correlations.Conclusions: Acoustic UFM was comparable to standard UFM for male pediatric patients. Further validation of its performance in different toilet settings is necessary for broader use.

Outcome of Buccal Mucosal Graft Urethroplasty in Long Segment Anterior Urethral Stricture

2020 ◽  
Vol 19 (2) ◽  
pp. 64-68
Author(s):  
Mrinmoy Biswas ◽  
Sudip Das Gupta ◽  
Mohammed Mizanur Rahman ◽  
Sharif Mohammad Wasimuddin
Keyword(s):  
Urethral Stricture ◽  
Flow Rate ◽  
Surgical Outcome ◽  
Simple Technique ◽  
Anterior Segment ◽  
Maximum Flow ◽  
Anastomotic Site ◽  
Buccal Mucosal Graft ◽  
Male Patients

Objective: To assess the success of BMG urethroplasty in long segment anterior urethral stricture. Method: From January 2014 to December 2015, twenty male patients with long anterior segment urethral stricture were managed by BMG urethroplasty. After voiding trial they were followed up at 3 month with Uroflowmetry, RGU & MCU and PVR measurement by USG. Patients were further followed up with Uroflowmetry and PVR at 6 months interval.Successful outcome was defined as normal voiding with a maximum flow rate >15ml /sec and PVR<50 ml with consideration of maximum one attempt of OIU after catheter removal. Results: Mean stricture length was 5.2 cm (range 3-9 cm) and mean follow-up was 15.55 months (range 6-23 months). Only two patients developed stricture at proximal anastomotic site during follow-up. One of them voided normally after single attempt of OIU. Other one required second attempt of OIU and was considered as failure (5%). Conclusion: BMG urethroplasty is a simple technique with good surgical outcome. Bangladesh Journal of Urology, Vol. 19, No. 2, July 2016 p.64-68

scholarly journals The effect of alpha blockers on uroflowmetric parameters in different voiding positions

2013 ◽  
Vol 7 (5-6) ◽  
pp. 329
Author(s):  
Gokhan Koc ◽  
Yuksel Yilmaz ◽  
Sitki Un ◽  
Kaan Akbay ◽  
Firat Akdeniz
Keyword(s):  
Flow Rate ◽  
Urine Volume ◽  
Maximum Flow ◽  
Standing Position ◽  
Prostatic Hyperplasia ◽  
Sitting Position ◽  
Average Flow Rate ◽  
Symptomatic Benign Prostatic Hyperplasia ◽  
Transabdominal Ultrasonography ◽  
Alpha Blockers

Introduction: We assessed the effect of different voiding positionson uroflowmetric parameters and post-void residual (PVR)urine volume in symptomatic benign prostatic hyperplasia (BPH)patients. We also evaluated the effect of alpha blockers on PVR indifferent voiding positions.Methods: The study was performed with 110 BPH patients over 50years old. In total, 4 uroflowmetries were performed in all patients:2 patients in the sitting position and 2 in the standing position. PVRwas measured with transabdominal ultrasonography. Also, patientswere divided into two groups according to the alpha adrenergicblocker treatment; the effect of this treatment on their uroflowmetricparameters in different positions was evaluated.Results: Maximum flow rate (Qmax) and average flow rate (Qave)were significantly higher in patients in the sitting position, butthere were no differences in other uroflowmetric parameters andPVR volume (Qmax: 15.5±5.9 mL/s vs. 13.7±5.2 mL/s, Qave:11.4±4.6 mL/s vs. 10.7± 3.9 mL/s, respectively; p < 0.05). TheQmax and Qave were significantly higher in sitting position, comparedto the standing position, in both alpha adrenergic treatmentand non-treated groups; again, there were no differences in otheruroflowmetric parameters and PVR volume.Conclusion: Qmax and Qave values were significantly higher inthe sitting position. Alpha blockers did not affect any change.

scholarly journals Modern Investigation toward Shari’ah Compliance: Squatting Uroflowmetry

2018 ◽  
Vol 17 (2) ◽  
Author(s):  
Muhd Zaki Azre Redzuan ◽  
Mohd Nazli Kamarulzaman ◽  
Hamid Ghazali
Keyword(s):  
Flow Rate ◽  
Maximum Flow ◽  
Daily Practice ◽  
Standing Position ◽  
Average Flow Rate ◽  
Urinary Tract Symptoms ◽  
Significant Difference ◽  
Urology Clinic ◽  
Clinic Hospital ◽  
Lower Urinary

INTRODUCTION: Standard uroflowmetry is performed in a standing position and it is an important investigation for those who are suspected of having lower urinary tract symptoms such as benign prostatic hyperplasia (BPH). Effects of changing positions during uroflowmetry have also been investigated previously but mixed conclusions were made. For Muslims, voiding in squatting position is encouraged as part as daily practice. This is mainly due to cleanliness reason and many Hadiths have emphasised about it. Objective: The aim of this study is to compare uroflowmetry findings between squatting and standing positions amongst BPH patients attending urology clinic Hospital Tengku Ampuan Afzan (HTAA).  Methods: This is a cross section observational study carried out from March 2015 to December 2015. The maximum flow rate, average flow rate, voiding volume, total voiding time and post-voiding residual volume were measured and recorded. Results: The results were then compared and analysed. 64.2% of patients were non-Muslims. 78.0% of the patients voiding habit were standing and 12.2% squatting position at home. The average International Prostate Symptom Score (IPSS) was 12.07 and 63.4% of them were in moderate group disease. Post void residual (PVR) volume showed a reduction in squatting position (p<0.05). Otherwise there was no significant difference seen in other parameters. Conclusion: This study showed that voiding in squatting position, which is shari’ah compliant is not inferior compare to standard uroflowmetry. Therefore Muslim patients should be given the option to perform uroflowmetry in a squatting position if available. This may yield better results.

scholarly journals Untersuchungen zum Milchfluss aus Eutervierteln

2000 ◽  
Vol 43 (5) ◽  
pp. 431-440 ◽  
Author(s):  
I. Naumann ◽  
R.-D. Fahr
Keyword(s):  
Flow Rate ◽  
Maximum Flow ◽  
Imaging Analysis ◽  
Average Flow Rate ◽  
Flow Curves ◽  
Ultrasound Technique ◽  
Milk Flow ◽  
Before And After ◽  
Analysis System ◽  
Channel Lengths

Abstract. Title of the paper: Investigation of milk flow from udder quarters 672 milk flow curves of 30 cows from the milkings of one quarter and from the corresponding complete milkings of the respective following day were registered. With the aid of the ultrasound technique and an imaging analysis system the teat Channel lengths, the teat wall thickness and the teat tissue areas were meseared before and after milking. The duration of decreasing flow rate of the complete milking can be explained by the traits of the milk flow curves of the quarter milkings. The maximum flow rate and the average flow rate were influenced by the shape traits of the teat apex.

scholarly journals The Effect of Toileting Position in Uroflow Curves in Young Healthy Nulliparous Women

Scientifica ◽  
2019 ◽  
Vol 2019 ◽  
pp. 1-4
Author(s):  
Omar Felipe Dueñas-Garcia ◽  
Maria del Pilar Matta-Gonzalez ◽  
Kylie Fuller ◽  
Wei Fang ◽  
Robert Edward Shapiro
Keyword(s):  
Pelvic Floor ◽  
Flow Rate ◽  
Pelvic Floor Disorders ◽  
Peak Flow ◽  
Maximum Flow ◽  
Average Flow Rate ◽  
Average Flow ◽  
Time To Peak ◽  
Nulliparous Women ◽  
Voided Volume

The objective of our study was to determine the effect of voiding positions on uroflow parameters in young, healthy nulliparous women with no pelvic floor disorders. Material and Methods. From December 2017 to February 2018, we performed a single-institution cross-sectional study with 30 healthy volunteers comparing uroflow curves in sitting and hovering positions. 49 participants were initially prescreened with a validated tool questionnaire for pelvic floor disorders and 30 participants who had absent symptoms were included for the final analysis. From the selected participants, demographics were collected and comparisons between the sitting and hovering position groups regarding the maximum flow rate (Qmax), average flow rate (Qave), voided volume (VV), and time to peak flow (TQmax) were conducted using either the paired t-test or the Wilcoxon rank sum test. In addition, linear regression analysis was performed to determine whether height, BMI, and age have significant impact on the log-transformed average of the pre- and postvalues of either Qmax, Qave, VV, or TQmax, as the average of these values are not normally distributed. Results. There were no statistical differences between the hovering and sitting position groups on the maximum flow rate (p=0.93), average flow rate (p=0.82), voided volume (p=0.53), and time to peak flow (p=0.82). BMI had borderline significant impact on Qave with p value = 0.0531. Conclusion. Different voiding toileting habits do not affect the most commonly used uroflow parameters in young healthy nulliparous patients. Results need to be corroborated by a larger scale study considering the small sample size of our study.

scholarly journals Clinical Reliability of IOL Master 700 in Measurement of Pupil Diameter and Corneal Curvature

2021 ◽  
Vol 62 (8) ◽  
pp. 1022-1028
Author(s):  
Hee Kyung Ryu ◽  
Sun Young Shin
Keyword(s):  
Correlation Analysis ◽  
Pupil Diameter ◽  
Intraclass Correlation ◽  
T Test ◽  
Corneal Curvature ◽  
Altman Plot ◽  
Bland Altman Plot ◽  
Significant Difference ◽  
Paired T Test ◽  
Good Agreement

Purpose: To compare IOL Master 700 with autokeratometer and video pupillometer in measurement of pupil diameter and corneal curvature.Methods: Pupil diameter were measured with IOL Master 700 and video pupilometer, horizontal keratometry and vertical keratometry were measured with IOL Master 700 and autokeratometer in 100 eyes of 50 children. Paired t-test and Pearson's correlation analysis were used to compare the differences among the devices. Agreement between measurement was analyzed using Bland Altman plot and intraclass correlation coefficient.Results: Comparing IOL Master 700 and video pupilometer for pupil diameter, there was no significant difference (p > 0.05). There was also no significant difference between IOL Master 700 and autokeratometer in measurement of vertical keratometry (p > 0.05). However, regarding horizontal keratometry there was significant difference between IOL Master 700 and autokeratometer, horizontal keratometry measured with IOL Master 700 was steeper than with auto keratometer, +0.105 diopters (D) in right eye and +0.130 D in left eye (p < 0.05).Conclusions: There was good agreement between IOL Master 700 and comparator instruments in regards to pupil diameter and corneal curvature. IOL Master 700 can be helpful in uncooperative children for measuring pupil diameter and corneal curvature at the same time.

Using an App to monitor postoperative pain at home in pediatric patients

2021 ◽  
pp. 136749352091931
Author(s):  
Emanuela Tiozzo ◽  
Valentina Biagioli ◽  
Matilde Brancaccio ◽  
Riccardo Ricci ◽  
Anna Marchetti ◽  
...  
Keyword(s):  
Postoperative Pain ◽  
Pain Intensity ◽  
Health Professionals ◽  
Pediatric Patients ◽  
Pain Scale ◽  
Factors Associated ◽  
Prospective Comparative Study ◽  
Paper And Pencil ◽  
The Impact ◽  
At Home

A prospective comparative study was conducted in 487 pediatric patients (69% male, mean age = 6.4 ± 4.0) to evaluate (a) the incidence, intensity, and characteristics of pain in pediatric patients at home during the first 24 hours and 5 days after surgery and (b) the factors associated with higher pain intensity, including the impact of an application (App) compared to the paper-and-pencil approach. Postoperative pain was assessed by patients or their parents at home using the ‘Bambino Gesù’ Children’s Hospital (Ospedale Pediatrico Bambino Gesù, OPBG) tool for participants aged 4–17 years or the Faces, Legs, Arms, Cry, and Consolability scale for participants less than four years old. Participants were assigned to two groups: those who used the paper-and-pencil version of the pain scale and those who used the App. Overall, 209 of the 472 (44%) participants reported pain during the first 24 hours, and 92 of the 420 (22%) reported pain between one and five days after surgery. Higher pain intensity scores were associated with being in the App group, directly assessing own pain, and using the OPBG tool. The App was effective in facilitating pain assessment. Health professionals could empower pediatric patients and their parents in assessing pain at home through a dedicated App.

Research on an axial-mounted dual magnetostrictive material rods-based electro-hydrostatic actuator

2021 ◽  
pp. 1045389X2110145
Author(s):  
Yuchuan Zhu ◽  
Chang Liu ◽  
Yunze Song ◽  
Long Chen ◽  
Yulei Jiang ◽  
...  
Keyword(s):  
Mathematical Model ◽  
Flow Rate ◽  
Flow Distribution ◽  
Maximum Flow ◽  
Magnetostrictive Material ◽  
Simulation Techniques ◽  
Motion State ◽  
New Type ◽  
Output Characteristics ◽  
Active Rectification

In this paper, an electro-hydrostatic actuator driven by dual axial-mounted magnetostrictive material rods-based pumps (MMPs) with a new type of active rectification valve is designed in the current study. Based on flow distribution of the active rectification valve and driving energy provided by two MMPs, the actuator can output continuous and bidirectional displacement. By establishing a mathematical model of the actuating system, using simulation techniques, the change rule of hydraulic cylinder’s motion state caused by different driving signals are studied and analyzed. Test equipment platform is constructed in the laboratory to test the output characteristics and confirm the feasibility of the new concept. The experimental results indicate that the maximum flow rate can reach approximately 2.7 L·min−1, while the operating frequency is 180 Hz.

scholarly journals Repeatability of automated measurements by a new anterior segment optical coherence tomographer and biometer and agreement with standard devices

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Domenico Schiano-Lomoriello ◽  
Kenneth J. Hoffer ◽  
Irene Abicca ◽  
Giacomo Savini
Keyword(s):  
Intraclass Correlation ◽  
Anterior Segment ◽  
Consecutive Series ◽  
Optical Coherence ◽  
Limits Of Agreement ◽  
Automated Measurements ◽  
Deviation Coefficient ◽  
Corneal Diameter ◽  
High Repeatability ◽  
Good Agreement

AbstractWe assess repeatability of automatic measurements of a new anterior segment optical coherence tomographer and biometer (ANTERION) and their agreement with those provided by an anterior segment-optical coherence tomography device combined with Placido-disk corneal topography (MS-39) and a validated optical biometer (IOLMaster 500). A consecutive series of patients underwent three measurements with ANTERION and one with MS-39. A subgroup of patients underwent biometry also with IOLMaster 500. Repeatability was assessed by means of within-subject standard deviation, coefficient of variation (COV), and intraclass correlation coefficient (ICC). Agreement was investigated with the 95% limits of agreement. Paired t-test and Wilcoxon matched-pairs test were performed to compare the measurements of the different devices. Repeatability of ANTERION measurements was high, with ICC > 0.98 for all parameters except astigmatism (0.963); all parameters apart from those related to astigmatism revealed a COV < 1%. Repeatability of astigmatism improved when only eyes whose keratometric astigmatism was higher than 1.0 D were investigated. Most measurements by ANTERION and MS-39 showed good agreement. No significant differences were found between measurements by ANTERION and IOLMaster, but for corneal diameter. ANTERION revealed high repeatability of automatic measurements and good agreement with both MS-39 and IOLMaster for most parameters.

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