The renogram in pregnancy

Baird, D. T.; Gasson, Patrick W.; Doig, A.

doi:10.1016/s0002-9378(16)34733-0

Cited by 11 publications

(4 citation statements)

References 20 publications

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“…We suggest that this change in bladder function is mainly responsible for failure of the nocturia to improve in the third trimester despite the reduction in overnight urine flow. Another factor which may influence the occurrence of nocturia relates to the effects of ureteric compression by the gravid uterus in the second and third trimesters (Baird, 1935;Harrow et al, 1964;Baird et al, 1966;Rubi and Sala, 1968). In some patients it is probable that effective bladder capacity is reduced by the volume of urine released from the dilated upper urinary outflow tract at night, this occurring when ureteric compression is relieved by the adoption of a lateral recumbent position.…”

Section: Discussionmentioning

confidence: 99%

Studies of Nocturia in Normal Pregnancy

Parboosingh

Doig

1973

BJOG

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Summary Observations were made on mean urine flow and the urinary excretion of total solute, sodium, potassium, urea and glucose in a 24 hour study and in an overnight study, each involving 100 pregnant and 100 non‐pregnant women. The findings reveal that the major cause of nocturnal frequency of micturition in the first and second trimesters is an increase in overnight urine flow, the increment being large in comparison with the change in 24 hour output. Overnight sodium excretion was also raised and was mainly responsible for the increase in urine flow. There was a reduction in the overnight excretion of urea relative to total solute excretion in the first and second trimesters and an absolute reduction in both overnight and 24 hour urea excretion in the third trimester; the significance of this observation is discussed. In a survey of 873 pregnant patients, the incidence of nocturia in the first, second and third trimesters was respectively 58, 57 and 66 per cent. Although the increment in mean overnight urine flow was smallest in the third trimester, measurements of urine voiding volumes suggest that in late pregnancy a decrease in functional bladder capacity is an additional cause of nocturia.

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Section: Discussionmentioning

confidence: 99%

Studies of Nocturia in Normal Pregnancy

Parboosingh

Doig

1973

BJOG

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“…Since the introduction of radio-isotope renography in 1956 (25) the method has been generally accepted as a simple means of estimating both secretory (uptake) and excretory (drainage) function of the individual kidney (5,7). The safe application of renography during pregnancy has been satisfactorily established with respect to the risk of radiation (16,18,27), and a few reports of the findings in "normal" pregnancy (2,10,14,17,18,20) as well as in pregnancy complicated by pre-eclampsia (12,17) have been published. During "normal" pregnancy a high incidence of delay in excretion has invariably been reported.…”

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confidence: 99%

“…During "normal" pregnancy a high incidence of delay in excretion has invariably been reported. Occurring as early as the twentieth week of gestation (2), the impairment develops with rising gestational age and disappears immediately following delivery (10,20). The delay is significantly more common and more pronounced on the right side.…”

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confidence: 99%

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The Diagnostic Value of Renography in Suspected Obstruction of the Urinary Tract During, Pregnancy

Bergström

1975

Acta Obstet Gynecol Scand

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Abstnrct. The renographic pattern of excretion in 93 pregnant women with clinically suspected obstruction of the urinary tract was not found to differ significantly from what could be expected on the basis of previous reports concerning "normal" pregnancy. It is concluded that in pregnancy the renographic diagnosis of possible "pathological" urinary tract obstruction is seriously impeded by the very high incidence of impaired excretion of ''physiological'' character, especially on the right side. In cases of pain suggesting urinary tract obstruction, f i e finding of even severely impaired excretion does not conclusively establish an etiological relationship. The main importance of renography is to exclude or confirm abnormalities of renal uptake function which may require further investigation or treatment during, or after, pregnancy. Immediately following delivery, persisting renographic impairment of excretion suggests an obstruction of "pathological" significance.

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Nephrologie und Urologie

Pabst¹,

G²

1978

Nuklearmedizin / Nuclear Medicine

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The renogram in pregnancy

Cited by 11 publications

References 20 publications

Studies of Nocturia in Normal Pregnancy

Studies of Nocturia in Normal Pregnancy

The Diagnostic Value of Renography in Suspected Obstruction of the Urinary Tract During, Pregnancy

Nephrologie und Urologie

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