Diuretic renography in infants with prenatal unilateral hydronephrosis: an explanation for the controversy about poor drainage

Background/Aim. The controversy over the postnatal management of infants with antenataly detected hydronephrosis (ANH) still exists. We presented the results of diuretic 99mTc diethylenetriamine pentaacetic acid (DTPA) renography in 30 infants with the antenatal diagnosis of unilateral renal pelvic dilatation. The aim of this study was to assess the renal function determined by the pattern of drainage and split renal function (SRF) on diuretic renography and to correlate these findings with anteroposterior pelvic diameter (APD) estimated by ultrasonography. Methods. A total of 30 infants with 60 renal units (RU) (25 boys and 5 girls, median age 6.0 months, range 2-24) presented with unilateral hydronephrosis on ultrasound in the newborn period, underwent DTPA diuretic renal scintigraphy (F+15 protocol). The median APD evaluated on perinatal ultrasound was 15 mm (range 5-30). The postnatal associated clinical diagnosis were pelviureteric junction obstruction (PUJ), simple hydronephrosis, megaureter, vesicoureteral reflux (VUR) and posterior urethral valves in 11, 10, 6, 2 and 1 infant, respectively. Images and Tmax/2 after diuretic stimulation on the background subtracted renographic curves were used as the criteria for classifying the drainage as good, partial, and poor or no drainage. The SRF was calculated with the integral method. Results. Good drainage was shown in 36/60, partial drainage in 13/60 and poor or no drainage in 11/60 RU. The SRF >40% was observed in 55/60 RU, with no RU showing SRF lower than 23.5%. In infants with severe ANH the obstruction was not excluded in 94.1%. Conclusion. Diuretic renography in antenatally detected hydronephrosis should be a useful tool in postnatal follow up, especially in differentiating nonobstructive hydronephrosis from obstructive. It is also importanat to assess and monitor the SRF. Our results suggest that even in the presence of partial or no drainage, SRF may not be significantly impaired.

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Renal Impairment in Young Patients with Unilateral Ureteral Lithiasis Obstruction: What Factors can be Responsible?

Revista de Chimie ◽

10.37358/rc.18.2.6110 ◽

2018 ◽

Vol 69 (2) ◽

pp. 375-378

Author(s):

Catalin Pricop ◽

Ileana Adela Vacaroiu ◽

Daniela Radulescu ◽

Daniel Andone ◽

Dragos Puia

Keyword(s):

Renal Impairment ◽

Serum Creatinine ◽

Young Patients ◽

Kidney Injury ◽

Contralateral Kidney ◽

Reactive Protein ◽

Ureteral Lithiasis ◽

Unilateral Hydronephrosis ◽

Duration Of Hospitalization ◽

History Of

In the literature, occurrence of acute kidney injury (AKI) in young patients with unilateral ureteral lithiasic obstruction and without previous renal impairment is not very often reported, and the underlined pathophysiological mechanisms are poorly known; according to some studies, it is a false kidney failure, the increase in serum creatinine being due to absorbtion of obstructed urine in the affected kidney. We have conducted a retro and prospective study in order to identify the possible risk factors that can cause renal function impairment in young patients (18-40 years) with unilateral ureteral lithiasis obstruction and a normal contralateral kidney. Results. From 402 patients included in the study, 20.64% (83 cases) presented with serum creatinine ] 1.3 mg/dL. In patients with renal impairment, prevalence of male gender and history of NSAIDS use before admission were significantly higher than in non-AKI group. Serum urea/creatinine ratio, and estimated glomerular filtration rate (MDRD formula) were significantly higher, and respectively lower in AKI group. We found no significant differences between the two groups regarding age, prevalence of urinary tract infection after relief of obstruction, C-reactive protein value, and the duration of hospitalization. Conclusions. AKI in young patients with unilateral ureteral lithiasis obstruction and normal contralateral kidney is not quite a rare finding in our region. NSAIDs use can influence development of AKI, and should be used cautiously even in young patients with renal colic. In our opinion, the presence of AKI in patients with unilateral hydronephrosis demands urgent endourological intervention. Choosing conservative therapy in these patients, especially treatment with NSAIDS may aggravate the renal dysfunction.

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Afforestation of Former Farmland with High-value Hardwoods

The Forestry Chronicle ◽

10.5558/tfc67209-3 ◽

1991 ◽

Vol 67 (3) ◽

pp. 209-212 ◽

Cited By ~ 4

Author(s):

F. W. von Althen

Keyword(s):

Early Years ◽

Intensive Management ◽

High Quality ◽

Close Spacing ◽

Hardwood Species ◽

Competition Control ◽

Stem Development ◽

Gradual Release ◽

Poor Drainage

For satisfactory growth, most high-value hardwood species demand a deep, fertile, moist but well drained soil. Intensive competition control during the early years after planting is a necessity. Close spacing is recommended, with gradual release of crop trees to promote high-quality stem development. For good hardwood growth on soils of marginal fertility or poor drainage or on sites where intensive management cannot be guaranteed, it is recommended that a mixture of several hardwood species be planted.

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Transient Hydroureteronephrosis Caused by a Foley's Catheter Tip in the Right Ureter

The Scientific World JOURNAL ◽

10.1100/tsw.2005.45 ◽

2005 ◽

Vol 5 ◽

pp. 367-369 ◽

Cited By ~ 8

Author(s):

Jacob George ◽

George Tharion

Keyword(s):

Teaching Hospital ◽

Tertiary Care ◽

Abdominal Ultrasound ◽

Physical Medicine ◽

Urethral Catheterization ◽

Ureteric Orifice ◽

Unilateral Hydronephrosis ◽

Catheter Tip ◽

Foley’S Catheter ◽

The Right

We report a case of unilateral hydronephrosis following urethral catheterization in a patient with T6 complete paraplegia at the Physical Medicine and Rehabilitation Department in a tertiary care teaching hospital, India. Diagnosis was established by an abdominal ultrasound. The misplaced catheter tip was withdrawn from the ureteric orifice and hydronephrosis was resolved. Foley's catheterization, a widely practiced clinical procedure, is not without its attendant risks of an inadvertent placement in the ureter leading to transient hydronephrosis. Inadequate drainage through a catheter should thus alert one to this potentially hazardous complication that can be diagnosed by an early ultrasound. This complication can be avoided by gently tugging on the catheter after inflating the catheter bulb.

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USO DE CAMALHÕES DE BASE LARGA PARA A VIABILIZAÇÃO DO CULTIVO DE SOJA EM TERRAS BAIXAS

Irriga ◽

10.15809/irriga.2018v23n4p679-696 ◽

2018 ◽

Vol 23 (4) ◽

pp. 679-696

Author(s):

Ricardo Benetti Rosso ◽

Marcia Xavier Peiter ◽

Adroaldo Dias Robaina ◽

Rogério Ricalde Torres ◽

Jardel Henrique Kirchner

Keyword(s):

Water Table ◽

Rio Grande ◽

The State ◽

Rice Cultivation ◽

Rio Grande Do Sul ◽

Soybean Production ◽

Surface Drainage ◽

Santa Maria ◽

Poor Drainage

USO DE CAMALHÕES DE BASE LARGA PARA A VIABILIZAÇÃO DO CULTIVO DE SOJA EM TERRAS BAIXAS RICARDO BENETTI ROSSO1; MARCIA XAVIER PEITER2; ADROALDO DIAS ROBAINA3; ROGÉRIO RICALDE TORRES4 E JARDEL HENRIQUE KIRCHNER5 1Eng. Agrônomo, Doutor, Professor do Instituto Federal Catarinense, Campus Concórdia, SC, Brasil, CEP: 89703-720, [email protected]. 2Eng. Agrônoma, Doutora, Professora Associada do Departamento de Engenharia Rural, UFSM, Santa Maria, RS, Brasil, CEP: 97195-000, [email protected]. 3Eng. Agrônomo, Doutor, Professor Titular do Departamento de Engenharia Rural, UFSM, Santa Maria, RS, Brasil, CEP: 97195-000, [email protected]. 4Eng. Agrônomo, Doutor, Professor do Instituto Federal de Educação, Ciência e Tecnologia do Rio Grande do Sul, Vacaria, RS, Brasil, CEP: 95219-899, [email protected] 5Eng. Agrônomo, Doutor, Professor do Instituto Federal de Educação, Ciência e Tecnologia do Rio Grande do Sul, Ibirubá, RS, Brasil, CEP: 98200-000, [email protected]. 1 RESUMO O estado do Rio Grande do Sul possui extensas áreas de terras baixas que são predominantemente ocupadas pela orizicultura que nos últimos anos vem enfrentando sérios problemas. A alternativa encontrada foi o cultivo de soja nestas áreas. Porém, estas áreas apresentam restrições físicas do solo, como por exemplo a má drenagem, que acarreta na elevação do nível freático próximo a superfície. Neste sentido, foi realizado um estudo com objetivo de avaliar a utilização de técnicas de drenagem, para viabilizar o cultivo de soja, através do rebaixamento do nível freático. Estas técnicas de drenagem são compostas pelos camalhões de base larga de 22,5; 15 e 7,5 m e a drenagem superficial. Como parâmetros de avaliação da eficiência no rebaixamento do nível freático foram utilizados os índices SEW30 SCmod e IDS, e também a produtividade e os componentes de produção da soja. Os resultados, demonstraram a eficiência do camalhão de base larga no rebaixamento do nível freático em comparação a drenagem superficial. Assim recomenda-se a utilização de camalhões de base larga de 7,5 e 15 m para o cultivo de soja em terras baixas. Palavras chave; drenagem, SEW30, nível freático, várzea. ROSSO R. B.; PEITER M. X.; ROBAINA A. D.; TORRES R.R.; KIRCHNER J. H. USE OF BROAD BED FURROW FOR FEASIBILITY OF SOYBEAN CULTIVATION IN LOWLANDS 2 ABSTRACT The state of Rio Grande do Sul has extensive lowland areas predominantly occupied by rice cultivation, which in recent years has been experiencing serious problems. The alternative found was to implement soybean cultivation in these areas. However, they present physical soil restrictions, such as poor drainage, which leads to elevation of the water table near the surface. In this sense, a study was carried out with the objective of evaluating the use of drainage techniques to enable soybean cultivation by lowering the water table. The drainage techniques were composed of a broad bed ridge of 22.5, 15 and 7.5 meters and surface drainage. SEW30, SCmod and IDS indices, as well the productivity and components of soybean production, were used as parameters for the evaluation of efficiency in lowering the water table. Among the broad bed ridges, 7.5 m wide and 15 m wide base were the most successful in the two harvests. Thus, the use of 7.5 and 15 m wide broad bed for cultivation of soybeans in lowlands is recommended. Keywords: drainage, SEW30, water table, lowland.

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