Comparison of Urine Protein/Creatinine Ratio With 24-hour Urine Protein Excretion in Woman With Hypertensive Disorders

Saint Thomas Hospital, Panama420 enrolled

Overview

The presence of proteinuria (\>300 mg/d) represents an important factor in the diagnosis and evaluation of the pregnant patient with an hypertensive disorder. The 24 hour collection of urine for proteinuria is the gold standard for the diagnosis of the condition and allows the physician to determine if an hypertensive disorder is related directly or not to the gestation. The problem is the time it takes and the technical difficulties related to the sample collection. An alternative is the quantification of protein and creatinine in a random sample of urine. We seek to evaluate if this method is as affective as the gold standard in the diagnosis of proteinuria (\>300 mg/d).

Study Type

INTERVENTIONAL

Allocation

Purpose

DIAGNOSTIC

Masking

NONE

Enrollment

420

Conditions

Hypertension, Pregnancy-Induced

Interventions

Eligibility

Sex: FEMALE

Medical Language ↔ Plain English

Inclusion Criteria: * Pregnant women with 28 weeks or more of gestation. * Complete collection of the 24 hour urine sample. Exclusion Criteria: * Failure to recollect the 24 hour urine sample. * Pregestational Diabetes * Kidney disease * 24 hour urine protein \> 8.0 g/dL or seric creatinine \> 2.0 mg/dL (it could indicate kidney disease).

Outcomes

Primary Outcomes

Sensitivity and Specificity

The number of patients with a 24 hour urine collection with a proteinuria \> 300mg will be compared with the number of patients with a Spot Test (protein/creatinine ratio in a random urine sample) \> 0.2 (equivalent to the 24 hour test \> 300 mg). This value will be used to calculate the Sensitivity and Specificity of the spot test.

Time frame: Six months

Secondary Outcomes

Positive and Negative Predictive Value

Time frame: six months