Ibuprofen vs Dipyrone After C-section in Preeclampsia (DIPROFEN)

The goal of this randomized, triple-masked clinical trial is to compare the effectiveness and safety of the use of ibuprofen versus dipyrone for postoperative analgesia in postpartum women with preeclampsia undergoing cesarean section. The main question it aims to answer are: Postoperative pain is similar; The frequency of acute kidney injury is similar. Researchers will compare one group that will receive dipyrone and the other group that will receive ibuprofen to see if Postoperative pain are different between groups or development of acute kidney injury each group is different.

Specific objectives In postpartum women with preeclampsia undergoing cesarean section randomized to receive treatment with ibuprofen versus dipyrone for postoperative analgesia, compare: primary outcomes Postoperative pain (mild, moderate, severe by visual analogue scale) Development of acute kidney injury (serum creatinine 1.5 to 1.9 times baseline, or increase in serum creatinine by ≥0.3 mg/dL, or decrease in urine output to <0.5 mL/kg/ hour for six to 12 hours). secondary outcomes 1. Average reduction of visual analogue scale scores; 2 Reduction of mean scores by algometer; 3. Need for rescue analgesic; 4. User satisfaction with the Likert scale; 5. Basic laboratory tests and their evolution: urea, creatine, uric acid, saline, potassium and chlorine, lactic dehydrogenase (DHL), aspartate transferase (AST), alanine transferase (ALT), total and fractions bilirubin and plaque; 6. Evolution of blood pressure in the puerperium; 7. Number of hypertensive peaks; 8. Need for maintenance antihypertensive treatment and number of drugs; 9. Allergic reactions; 10. Gastrointestinal side effects; 11. Time between postoperative and unassisted ambulation; 12. Length of hospital stay; 13. Compound maternal morbidity (eclampsia, acute weight edema, HELLP, difficulty hypertension, intracranial hemorrhage, renal function control and others); 14. Maternal death; 15. Costs related to analgesic medications. The sample is 74 patients randomized into two groups: one group that will receive dipyrone and the other group that will receive ibuprofen. Randomization for the two groups will be performed according to a list of random numbers drawn up for that purpose by an employee who does not be involved with data collection, to ensure confidentiality in the allocation. From this list, sealed envelopes will be prepared, numbered sequentially, with each number, according to the randomization table, corresponding to the patient's group (dipyrone or ibuprofen). For statistical analysis of the data, the domain statistical program will be used public Epi-info version 7, or higher versions. Tables will be distributed frequency distribution for categorical variables, calculating the mean and standard deviation of quantitative variables. Then, contingency tables will be used to determine the association of the independent variable (Ibuprofen versus dipyrone) with the dependent variables (Biological characteristics, obstetric features, Maternal clinical parameters at admission and during hospitalization, Maternal laboratory tests at the time of admission). For determination of the strength of association will be calculated as a measure of the risk (RR) and its 95% confidence interval. All p values will be two-tailed and in all stages of the analysis will be considered a level of significance 5%.

Ibuprofen pills, identical to the intervention (dipyrone pills), will be administered every 6 hour for a maximum of five days

Dipyrone pills, identical to the intervention (ibuprofen pills), will be administered every 6 hour for a maximum of five days

Development of acute kidney injury (serum creatinine 1.5 to 1.9 times baseline, or increase in serum creatinine by ≥0.3 mg/dL, or decrease in urine output to <0.5 mL/kg/ hour for six to 12 hours).

Quantify the number of times analgesic medication was requested, in addition to what is being offered in the study

Likert scale, used in questionnaires, Participants choose from a variety of possible responses to a specific question or statement; responses usually include "strongly agree", "agree", "neutral", "disagree" and "strongly disagree".

Baseline laboratory tests and their evolution, urea measured in mg/dl at admission and up to 48 hours after admission.

Baseline laboratory tests and their evolution, aspartate transferase dosage measured in mg/dl at admission and up to 48 hours after admission.

Baseline laboratory tests and their evolution, potassium dosage measured in mg/dl at admission and up to 48 hours after admission.

Baseline laboratory tests and their evolution,chlorine dosage measured in mg/dl at admission and up to 48 hours after admission.

Baseline laboratory tests and their evolution, alanine transferase dosage measured in mg/dl at admission and up to 48 hours after admission.

Baseline laboratory tests and their evolution, lactic dehydrogenase dosage measured in mg/dl at admission and up to 48 hours after admission.

Baseline laboratory tests and their evolution, sodium dosage measured in mg/dl at admission and up to 48 hours after admission.

Baseline laboratory tests and their evolution, creatinine dosage measured in mg/dl at admission and up to 48 hours after admission.

Baseline laboratory tests and their evolution, creatinine dosage measured in mm³ at admission and up to 48 hours after admission.

Baseline laboratory tests and their evolution: urea, creatinine, uric acid, sodium, potassium and chlorine, lactic dehydrogenase (DHL), aspartate transferase (AST), alanine transferase (ALT), total and fractions bilirubin and platelets;

Baseline laboratory test and the evolution. urea, creatinine, uric acid, sodium, potassium and chlorine, lactic dehydrogenase (DHL), aspartate transferase (AST), alanine transferase (ALT), total and fractions bilirubin and platelets;

Number of hypertensive peaks (systolic blood pressure of 180mmHg and/or diastolic blood pressure of 120mmHg);

Questionnaire with options for acute gastrointestinal effects: abdominal pain, dyspepsia and diarrhea

From hospital admission to hospital discharge date or up to eight days after surgery whichever comes first.

Compound maternal morbidity (eclampsia, acute pulmonary edema, HELLP syndrome, difficult-to-control hypertension, intracranial hemorrhage, renal failure and others);

Space reserved in the questionnaire to be described according to the death certificate the primary cause of maternal death.

Accounting for the cost related to each dose doses of anesthetic medications that were used in addition to the therapeutic regimens of the experiment were used

Inclusion Criteria: Puerperal women from 14 years of age diagnosed with preeclampsia with signs of severity Immediate postoperative period; Delivery attended at the Maternity from Instituto de Medicina Integral Prof Fernando Figueira. Exclusion Criteria: Acute kidney disease (serum creatinine 1.5 to 1.9 times baseline, or increase in serum creatinine by ≥0.3 mg/dL, or decrease in urine output to <0.5 mL/kg/hour for six to 12 hours) Chronic kidney disease; Diabetes mellitus; Collagenoses; Sickle cell anemia; Patients who presented bleeding in the pre, trans and immediate postpartum periods; Antepartum or puerperal sepsis; Known contraindications to the use of NSAIDs and dipyrone;