1
|
Malek R, Baghestani A, Rashid-Farokhi F, Shafaghi S, Minoo F, Eghbali F, Chandra N, Shafaghi M, Bonyadi K, Hosseini-Baharanchi FS. Evaluation of laboratory values affecting mortality of end-stage renal disease patients: a competing risks approach. BMC Nephrol 2023; 24:213. [PMID: 37464291 DOI: 10.1186/s12882-023-03234-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2022] [Accepted: 06/06/2023] [Indexed: 07/20/2023] Open
Abstract
BACKGROUND Chronic Kidney Disease (CKD) is a prevalent and life-threatening situation recognized as an emerging health issue. The present study aimed to evaluate the effect of demographic and laboratory parameters on the survival of patients with End-Stage Renal Disease (ESRD) in a hemodialysis (HD) center in Iran. MATERIALS AND METHODS This study was conducted on patients receiving chronic HD in Iran Helal Pharmaceutical and Clinical Complex between 2014 and 2018. The survival time was considered as the time interval between HD initiation and death. Receiving kidney transplantation was regarded as a competing risk, and an improper form of two-parameter Weibull distribution was utilized to simultaneously model the time to both death and renal transplantation. The Bayesian approach was conducted for parameters estimation. RESULTS Overall, 29 (26.6%) patients expired, and 19 (17.4%) received kidney transplants. The male gender was related to poor survival, having nearly 4.6 folds higher hazard of mortality (90% HPD region: 1.36-15.49). Moreover, Serum calcium levels [Formula: see text]9.5 mg/dL (adjusted Sub-hazard ratio (S-HR)=2.33, 90% HPD region: 1.05-5.32) and intact parathyroid hormone (iPTH) [Formula: see text]150 pg/mL (adjusted S-HR = 2.56, 90% HPD region: 1.09-6.15) were associated with an elevated hazard of mortality. The cumulative incidence function (CIF) for transplantation was greater than death in the first two years of the study. Subsequently, the CIF for death exceeded transplantation in the following two years. The 4-year cumulative incidence of death and kidney transplantation was 63.7% and 36.3%, respectively. CONCLUSION Male gender, hypercalcemia, and hypoparathyroidism were associated with worse outcomes. Correcting mentioned laboratory parameters may improve patients' survival in the HD population.
Collapse
Affiliation(s)
- Rayka Malek
- School of Population Health sciences, King's College London, London, UK
| | - Ahmadreza Baghestani
- Department of Biostatistics, Faculty of Paramedical Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Farin Rashid-Farokhi
- Telemedicine Research Center, & Chronic Kidney Disease Research Center, Masih Daneshvari Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Shadi Shafaghi
- Lung Transplantation Research Center, National Research Institute of Tuberculosis and Lung Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Farzanehsadat Minoo
- Center of Excellence in Nephrology, Nephrology Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Foolad Eghbali
- Minimally Invasive Surgery Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Navin Chandra
- Department of Statistics, Ramanujan School of Mathematical Sciences, Pondicherry University, Puducherry, India
| | - Masoud Shafaghi
- Strategic Planning and Executive Office Manager, International Federation of Inventors' Associations, Geneva, Switzerland
| | - Kaveh Bonyadi
- Department of Biomedical (Biomechanics), Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Fatemeh Sadat Hosseini-Baharanchi
- Minimally Invasive Surgery Research Center, Iran University of Medical Sciences, Tehran, Iran.
- Department of Biostatistics, School of Public Health, Iran University of Medical Sciences, Tehran, Iran.
| |
Collapse
|
2
|
Rizk JG, Lazo JG, Quan D, Gabardi S, Rizk Y, Streja E, Kovesdy CP, Kalantar-Zadeh K. Mechanisms and management of drug-induced hyperkalemia in kidney transplant patients. Rev Endocr Metab Disord 2021; 22:1157-1170. [PMID: 34292479 DOI: 10.1007/s11154-021-09677-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 07/16/2021] [Indexed: 10/20/2022]
Abstract
Hyperkalemia is a common and potentially life-threatening complication following kidney transplantation that can be caused by a composite of factors such as medications, delayed graft function, and possibly potassium intake. Managing hyperkalemia after kidney transplantation is associated with increased morbidity and healthcare costs, and can be a cause of multiple hospital admissions and barriers to patient discharge. Medications used routinely after kidney transplantation are considered the most frequent culprit for post-transplant hyperkalemia in recipients with a well-functioning graft. These include calcineurin inhibitors (CNIs), pneumocystis pneumonia (PCP) prophylactic agents, and antihypertensives (angiotensin-converting enzyme inhibitors, angiotensin receptor blockers, beta blockers). CNIs can cause hyperkalemic renal tubular acidosis. When hyperkalemia develops following transplantation, the potential offending medication may be discontinued, switched to another agent, or dose-reduced. Belatacept and mTOR inhibitors offer an alternative to calcineurin inhibitors in the event of hyperkalemia, however should be prescribed in the appropriate patient. While trimethoprim/sulfamethoxazole (TMP/SMX) remains the gold standard for prevention of PCP, alternative agents (e.g. dapsone, atovaquone) have been studied and can be recommend in place of TMP/SMX. Antihypertensives that act on the Renin-Angiotensin-Aldosterone System are generally avoided early after transplant but may be indicated later in the transplant course for patients with comorbidities. In cases of mild to moderate hyperkalemia, medical management can be used to normalize serum potassium levels and allow the transplant team additional time to evaluate the function of the graft. In the immediate post-operative setting following kidney transplantation, a rapidly rising potassium refractory to medical therapy can be an indication for dialysis. Patiromer and sodium zirconium cyclosilicate (ZS-9) may play an important role in the management of chronic hyperkalemia in kidney transplant patients, although additional long-term studies are necessary to confirm these effects.
Collapse
Affiliation(s)
- John G Rizk
- Arizona State University, Edson College, Phoenix, AZ, USA.
| | - Jose G Lazo
- UCSF Medical Center, University of California San Francisco, San Francisco, CA, USA
| | - David Quan
- UCSF Medical Center, University of California San Francisco, San Francisco, CA, USA
| | - Steven Gabardi
- Department of Transplant Surgery, Brigham and Women's Hospital, Boston, MA, USA
- Department of Medicine, Harvard Medical School, Boston, MA, USA
| | - Youssef Rizk
- Department of Internal Medicine, Division of Family Medicine, Lebanese American University Medical Center - St. John's Hospital, Beirut, Lebanon
| | - Elani Streja
- Department of Medicine, Division of Nephrology, Hypertension and Kidney Transplantation, School of Medicine, University of California, CA, Irvine, Orange, USA
| | - Csaba P Kovesdy
- Division of Nephrology, University of Tennessee Health Science Center, Memphis, TN, USA
| | - Kamyar Kalantar-Zadeh
- Department of Medicine, Division of Nephrology, Hypertension and Kidney Transplantation, School of Medicine, University of California, CA, Irvine, Orange, USA
- Department of Epidemiology, University of California, UCLA Fielding School of Public Health, Los Angeles, CA, USA
| |
Collapse
|
3
|
Assessment of Oxidative Stress Markers in Hypothermic Preservation of Transplanted Kidneys. Antioxidants (Basel) 2021; 10:antiox10081263. [PMID: 34439511 PMCID: PMC8389232 DOI: 10.3390/antiox10081263] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Revised: 08/06/2021] [Accepted: 08/06/2021] [Indexed: 12/14/2022] Open
Abstract
Ischemia-reperfusion injury (IRI) after renal transplantation is a complex biochemical process. The first component is an ischemic phase during kidney storage. The second is reperfusion, the main source of oxidative stress. This study aimed to analyze the activity of enzymes and concentrations of non-enzymatic compounds involved in the antioxidant defense mechanisms: glutathione (GSH), glutathione peroxidase (GPX), catalase (CAT), superoxide dismutase (SOD), glutathione reductase (GR), glutathione transferase (GST), thiobarbituric acid reactive substances (TBARS), malondialdehyde (MDA), measured in preservation fluid before transplantation of human kidneys (KTx) grafted from brain dead donors. The study group (N = 66) was divided according to the method of kidney storage: Group 1—hypothermic machine perfusion (HMP) in LifePort perfusion pump, n1 = 26, and Group 2—static cold storage (SCS), n2 = 40. The measurements of kidney function parameters, blood count, and adverse events were performed at constant time points during 7-day hospitalization and 3-month follow-up. Kidney perfusate in Group 2 was characterized by significantly more acidic pH (p < 0.0001), higher activity of GPX [U/mgHb] (p < 0.05) and higher concentration of MDA [μmol/L] (p < 0.05). There was a statistically significant improvement of kidney function and specific blood count alterations concerning storage method in repeated measures. There were aggregations of significant correlations (p < 0.05) between kidney function parameters after KTx and oxidative stress markers: diuresis & CAT, Na+ & CAT, K+ & GPX, urea & GR. There were aggregations of significant correlations (p < 0.05) between recipient blood count and oxidative stress markers: CAT & MON, SOD & WBC, SOD & MON. Study groups demonstrated differences concerning the method of kidney storage. A significant role of recipient’s gender, gender matching, preservation solution, and perfusate pH was not confirmed, however, basing on analyzed data, the well-established long-term beneficial impact of HMP on the outcome of transplanted kidneys might partially depend on the intensity of IRI ischemic phase and oxidative stress, reflected by the examined biomarkers.
Collapse
|