Purpose

The purpose of this study is to determine whether perioperative intravenous administration of pantoprazole will improve kidney function parameters following cardiac surgery with cardiopulmonary bypass compared to famotidine and to determine whether perioperative intravenous administration of pantoprazole will decrease the incidence of postoperative Acte Kidney Injury (AKI) and major adverse kidney events (MAKE).

Condition

Eligibility

Eligible Ages
Between 18 Years and 90 Years
Eligible Genders
All
Accepts Healthy Volunteers
No

Inclusion Criteria

  • Scheduled for elective cardiac surgery with cardio pulmonary bypass (CPB) with a high risk of developing AKI (Cleveland risk score equal or higher than 3, please see the appended table at end of the revised protocol)

Exclusion Criteria

  • Preoperative eGFR<30 ml/min per 1.73 m2 - Dialysis dependence - Emergency surgery - Interstitial nephritis - Pregnancy - Nursing Patients - Proton pump inhibitors (PPIs) hypersensitivity - Liver disease - Vitamin B12 deficiency

Study Design

Phase
Phase 4
Study Type
Interventional
Allocation
Randomized
Intervention Model
Parallel Assignment
Primary Purpose
Prevention
Masking
Single (Participant)

Arm Groups

ArmDescriptionAssigned Intervention
Experimental
Pantoprazole group
Pantoprazole (40 mg iv every 12 hours/q12H) for 2 days perioperatively (first dose after anesthesia induction and before surgical incision, second dose at chest closure, then followed by 2 doses daily (Q12hr dosing) on postoperative (POD) 1 for a total of 4 doses over 2 days. There will be no other modifications in patient care.
  • Drug: Pantoprazole
    Subjects will receive pantoprazole (40 mg iv q12H) for 2 days perioperatively (first dose after anesthesia induction and before surgical incision, second dose at chest closure, then followed by 2 doses daily (Q12hr dosing) on post operative day 1 (POD 1) for a total of 4 doses over 2 days.
Active Comparator
Famotidine Group
Famotidine (20 mg iv q12H) for 2 days perioperatively (first dose after anesthesia induction and before surgical incision, second dose at chest closure, then followed by 2 doses daily (Q12hr dosing) on POD 1 for a total of 4 doses over 2 days. There will be no other modifications in patient care.
  • Drug: Famotidine
    Subjects will receive famotidine (20 mg iv q12H) for 2 days perioperatively (first dose after anesthesia induction and before surgical incision, second dose at chest closure, then followed by 2 doses daily (Q12hr dosing) on POD 1 for a total of 4 doses over 2 days.

Recruiting Locations

The University of Texas Health Science Center at Houston
Houston, Texas 77030
Contact:
Yafen Liang, MD
713-500-6229
Yafen.Liang@uth.tmc.edu

More Details

Status
Recruiting
Sponsor
The University of Texas Health Science Center, Houston

Study Contact

Yafen Liang, MD
713-500-6229
Yafen.Liang@uth.tmc.edu

Detailed Description

Each year more than 500,000 cardiac surgeries are performed in the United States of America (USA) alone. Acute kidney injury ( AK) I is a common complication following cardiac surgery and is associated with poor patient outcomes and increased healthcare costs. Therefore, there is an urgent need to identify medical interventions and treatments that prevent AKI or mitigate its severity when it occurs after cardiac surgery. One of the main causes of AKI following cardiac surgery involves renal hypoperfusion/ischemia and reperfusion injury. Hypoxia-inducible factors (HIFs) are key transcription factors responsible for tissue adaptation to low oxygen, which orchestrate the expression of a wide variety of genes including a set of micro-ribonucleic acid (microRNAs). MicroRNAs are endogenous single-stranded noncoding miRNAs of nucleotides that participate in physiological and pathological functions via regulating post-transcription of target genes. During ischemic injury, hypoxia upregulates endothelial MicroRNAs that has the potential in renal protection through vascular integrity and regeneration. Additionally, microRNAs exert protective effects via decreasing apoptosis and promoting tubular cell proliferation during ischemic AKI. Moreover, decreased serum levels of MicroRNAs are highly correlated with AKI severity in the intensive care unit (ICU) patients. Our preliminary study identified ATP4A as the downstream target gene of MicroRNAs in the kidney. Adenosine triphosphate (ATP)4A (catalytic α subunit of H+/K+ ATPase) is located in intercalated cells in the distal tubules and cortical collecting ducts, which regulates urine acidification through secretion of hydrogen and reabsorption of potassium from urine. Proton pump inhibitors (PPIs) block the ATP hydrolysis of the H+/K+ ATPase via binding its active site of ATP4A and further enhance this endogenous kidney protection pathway. Despite robust animal model data, randomized controlled trial aiming to test the effectiveness of PPI in post-cardiac surgery AKI prevention is lacking. If proven to be effective, our studies could be easily implemented in clinical practice and serve as an effective treatment for perioperative AKI.

Notice

Study information shown on this site is derived from ClinicalTrials.gov (a public registry operated by the National Institutes of Health). The listing of studies provided is not certain to be all studies for which you might be eligible. Furthermore, study eligibility requirements can be difficult to understand and may change over time, so it is wise to speak with your medical care provider and individual research study teams when making decisions related to participation.