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Patidar KR, Belcher JM, Regner KR, St Hillien SA, Simonetto DA, Asrani SK, Neyra JA, Sharma P, Velez JCQ, Wadei H, Nadim MK, Chung RT, Seethapathy R, Parada XV, Ouyang T, Ufere NN, Robinson JE, McLean Diaz P, Wilechansky RM, Przybyszewski EM, Smith TN, Ali AA, Orman ES, Schulz P, Siddiqui SM, Shabbir R, Liu LJ, Cama-Olivares A, Flannery AH, Baker ML, Gunasekaran D, Aswine A, Issa R, Li J, Verma S, Chalmers D, Varghese V, Lam W, Mohamed M, Kovacic R, Gaddy A, Attieh RM, Cortes P, Semnani S, Wang L, Khemichian S, Allegretti AS. Incidence and outcomes of acute kidney injury including hepatorenal syndrome in hospitalized patients with cirrhosis in the US. J Hepatol 2023; 79:1408-1417. [PMID: 37517455 PMCID: PMC10807505 DOI: 10.1016/j.jhep.2023.07.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/22/2023] [Revised: 07/12/2023] [Accepted: 07/13/2023] [Indexed: 08/01/2023]
Abstract
BACKGROUND & AIMS Acute kidney injury (AKI) in cirrhosis is common and associated with high morbidity, but the incidence rates of different etiologies of AKI are not well described in the US. We compared incidence rates, practice patterns, and outcomes across etiologies of AKI in cirrhosis. METHODS We performed a retrospective cohort study of 11 hospital networks, including consecutive adult patients admitted with AKI and cirrhosis in 2019. The etiology of AKI was adjudicated based on pre-specified clinical definitions (prerenal/hypovolemic AKI, hepatorenal syndrome [HRS-AKI], acute tubular necrosis [ATN], other). RESULTS A total of 2,063 patients were included (median age 62 [IQR 54-69] years, 38.3% female, median MELD-Na score 26 [19-31]). The most common etiology was prerenal AKI (44.3%), followed by ATN (30.4%) and HRS-AKI (12.1%); 6.0% had other AKI, and 7.2% could not be classified. In our cohort, 8.1% of patients received a liver transplant and 36.5% died by 90 days. The lowest rate of death was observed in patients with prerenal AKI (22.2%; p <0.001), while death rates were higher but not significantly different from each other in those with HRS-AKI and ATN (49.0% vs. 52.7%; p = 0.42). Using prerenal AKI as a reference, the adjusted subdistribution hazard ratio (sHR) for 90-day mortality was higher for HRS-AKI (sHR 2.78; 95% CI 2.18-3.54; p <0.001) and ATN (sHR 2.83; 95% CI 2.36-3.41; p <0.001). In adjusted analysis, higher AKI stage and lack of complete response to treatment were associated with an increased risk of 90-day mortality (p <0.001 for all). CONCLUSION AKI is a severe complication of cirrhosis. HRS-AKI is uncommon and is associated with similar outcomes to ATN. The etiology of AKI, AKI stage/severity, and non-response to treatment were associated with mortality. Further optimization of vasoconstrictors for HRS-AKI and supportive therapies for ATN are needed. IMPACT AND IMPLICATIONS Acute kidney injury (AKI) in cirrhosis carries high morbidity, and management is determined by the etiology of injury. However, a large and well-adjudicated multicenter database from US centers that uses updated AKI definitions is lacking. Our findings demonstrate that acute tubular necrosis and hepatorenal syndrome have similar outcomes (∼50% mortality at 90 days), though hepatorenal syndrome is uncommon (12% of all AKI cases). These findings represent practice patterns at US transplant/tertiary centers and can be used as a baseline, presenting the situation prior to the adoption of terlipressin in the US.
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Affiliation(s)
- Kavish R Patidar
- Section of Gastroenterology and Hepatology, Department of Medicine, Baylor College of Medicine and Michael E. DeBakey Veterans Affairs Medical Center, Houston, TX, USA
| | - Justin M Belcher
- Section of Nephrology, Department of Internal Medicine, Yale University and VA Connecticut Healthcare, New Haven, CT, USA
| | - Kevin R Regner
- Division of Nephrology at the Medical College of Wisconsin, Milwaukee, WI, USA
| | - Shelsea A St Hillien
- Division of Nephrology, Department of Medicine, Massachusetts General Hospital, Boston, MA, USA
| | - Douglas A Simonetto
- Division of Gastroenterology and Transplant Hepatology, Mayo Clinic, Rochester, MN, USA
| | | | - Javier A Neyra
- Division of Nephrology, Department of Medicine, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Pratima Sharma
- Department of Gastroenterology and Transplant Hepatology at University of Michigan Health, Ann Arbor, MI, USA
| | - Juan Carlos Q Velez
- Department of Nephrology at the Ochsner Medical Center, New Orleans, LA, USA
| | - Hani Wadei
- Department of Transplantation, Mayo Clinic, Jacksonville, FL, USA
| | - Mitra K Nadim
- Division of Nephrology and Hypertension, Department of Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Raymond T Chung
- Division of Gastroenterology, Department of Medicine, Massachusetts General Hospital, Boston, MA, USA
| | - Ritu Seethapathy
- Division of Nephrology, Department of Medicine, Massachusetts General Hospital, Boston, MA, USA
| | - Xavier Vela Parada
- Division of Nephrology, Department of Medicine, Massachusetts General Hospital, Boston, MA, USA
| | - Tianqi Ouyang
- Division of Nephrology, Department of Medicine, Massachusetts General Hospital, Boston, MA, USA
| | - Nneka N Ufere
- Division of Gastroenterology, Department of Medicine, Massachusetts General Hospital, Boston, MA, USA
| | - Jevon E Robinson
- Division of Nephrology, Department of Medicine, Massachusetts General Hospital, Boston, MA, USA
| | - Paige McLean Diaz
- Division of Gastroenterology, Department of Medicine, Massachusetts General Hospital, Boston, MA, USA
| | - Robert M Wilechansky
- Division of Gastroenterology, Department of Medicine, Massachusetts General Hospital, Boston, MA, USA
| | - Eric M Przybyszewski
- Division of Gastroenterology, Department of Medicine, Massachusetts General Hospital, Boston, MA, USA
| | - Thomas N Smith
- Division of Gastroenterology and Transplant Hepatology, Mayo Clinic, Rochester, MN, USA
| | - Arzina Aziz Ali
- Division of Internal Medicine, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Eric S Orman
- Division of Gastroenterology and Hepatology, Indiana University School of Medicine, Indianapolis, IN, USA
| | | | | | | | - Lucas J Liu
- Division of Biomedical Informatics, Department of Medicine and Department of Computer Science, University of Kentucky, Lexington, KY, USA
| | - Augusto Cama-Olivares
- Division of Nephrology, Department of Medicine, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Alexander H Flannery
- Department of Pharmacy Practice and Science, University of Kentucky College of Pharmacy, Lexington, KY, USA
| | - Megan L Baker
- Section of Nephrology, Department of Internal Medicine, Yale University, New Haven, CT, USA
| | - Deepthi Gunasekaran
- Section of Nephrology, Department of Internal Medicine, Yale University, New Haven, CT, USA
| | - Adeline Aswine
- Department of Internal Medicine at University of Michigan Health, Ann Arbor, MI, USA
| | - Rafik Issa
- University of Michigan Medical School, Ann Arbor, MI, USA
| | - Jay Li
- University of Michigan Medical School, Ann Arbor, MI, USA
| | - Shreya Verma
- University of Michigan Medical School, Ann Arbor, MI, USA
| | - Dustin Chalmers
- Department of Nephrology at the Ochsner Medical Center, New Orleans, LA, USA
| | - Vipin Varghese
- Department of Nephrology at the Ochsner Medical Center, New Orleans, LA, USA
| | - Walter Lam
- Department of Nephrology at the Ochsner Medical Center, New Orleans, LA, USA
| | - Muner Mohamed
- Department of Nephrology at the Ochsner Medical Center, New Orleans, LA, USA
| | - Rosemary Kovacic
- Department of Nephrology at the Ochsner Medical Center, New Orleans, LA, USA
| | - Anna Gaddy
- Division of Nephrology at the Medical College of Wisconsin, Milwaukee, WI, USA
| | - Rose Mary Attieh
- Department of Transplantation, Mayo Clinic, Jacksonville, FL, USA
| | - Pedro Cortes
- Department of Transplantation, Mayo Clinic, Jacksonville, FL, USA
| | - Sahar Semnani
- Division of Nephrology and Hypertension, Department of Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Lin Wang
- Division of Nephrology and Hypertension, Department of Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Saro Khemichian
- Division of Gastrointestinal and Liver Disease, Department of Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Andrew S Allegretti
- Division of Nephrology, Department of Medicine, Massachusetts General Hospital, Boston, MA, USA.
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Nair R, Lak H, Hasan S, Gunasekaran D, Babar A, Gopalakrishna KV. Reducing All-cause 30-day Hospital Readmissions for Patients Presenting with Acute Heart Failure Exacerbations: A Quality Improvement Initiative. Cureus 2020; 12:e7420. [PMID: 32351805 PMCID: PMC7186095 DOI: 10.7759/cureus.7420] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Background Congestive heart failure (CHF) is the most common cause of hospitalization in the US for people older than 65 years of age. It has the highest 30-day re-hospitalization rate among medical and surgical conditions, accounting for up to 26.9% of the total readmission rates. We conducted a quality improvement project at our hospital with the objective to reduce the 30-day all-cause readmissions of patients with CHF by improving the transition of care and setting up scheduled follow-up appointments within two weeks of patient discharge. Method Retrospective data were collected to understand the pattern of admission for CHF during November 2017. Data on 30-day readmission post-discharge was also collected to understand readmission rates. Similarly, all patients who were admitted with acute CHF exacerbation to our hospital during the month of November 2018 were included in our intervention cohort. The 30-day readmission rates of these patients post-intervention were calculated and compared to the initial cohort. Results As part of our study, we ensured that 58% of the enrolled patients had a follow-up appointment scheduled within two weeks of discharge compared to only 30% in 2017. Also, 56% of the enrolled patients kept their follow-up appointments compared to 37% in 2017. The 30-day readmission rate of CHF patients was reduced in half after the implementation of our project, with a 14% readmission rate for our study patients compared to 28% in 2017. Conclusion Patient education and measures to augment post-discharge follow-up appointments can lead to substantial reductions in the readmission rates of heart failure (HF) patients.
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Affiliation(s)
- Raunak Nair
- Internal Medicine, Cleveland Clinic - Fairview Hospital, Cleveland, USA
| | - Hassan Lak
- Internal Medicine, Cleveland Clinic - Fairview Hospital, Cleveland, USA
| | - Seba Hasan
- Internal Medicine, Cleveland Clinic Foundation, Cleveland, USA.,Internal Medicine, Cleveland Clinic - Fairview Hospital, Cleveland, USA
| | | | - Arslan Babar
- Internal Medicine, Cleveland Clinic - Fairview Hospital, Cleveland, USA
| | - K V Gopalakrishna
- Internal Medicine, Cleveland Clinic - Fairview Hospital, Cleveland, USA
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Gunasekaran D, Sridhar J, Suryanarayanan V, Manimaran NC, Singh SK. Molecular modeling and structural analysis of nAChR variants uncovers the mechanism of resistance to snake toxins. J Biomol Struct Dyn 2016; 35:1654-1671. [PMID: 27421773 DOI: 10.1080/07391102.2016.1190791] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Nicotinic acetylcholine receptors (nAChRs) are neuromuscular proteins responsible for muscle contraction upon binding with chemical stimulant acetylcholine (ACh). The α-neurotoxins of snake mimic the structure of ACh and attacks nAChRs, which block the flow of ACh and leads to numbness and paralysis. The toxin-binding site of alpha subunit in the nAChRs is highly conserved throughout chordate lineages with few exceptions in resistance organisms. In this study, we have analyzed the sequence and structures of toxin-binding/resistant nAChRs and their interaction stability with toxins through molecular docking and molecular dynamics simulation (MDS). We have reported the potential glycosylation residues within the toxin-binding cleft adding sugar moieties through N-linked glycosylation in resistant organisms. Residue variations at key positions alter the secondary structure of binding cleft, which might interfere with toxin binding and it could be one of the possible explanations for the resistance to snake venoms. Analysis of nAChR-α-neurotoxin complexes has confirmed the key interacting residues. In addition, drastic variation in the binding stability of Mongoose nAChR-α-Bungarotoxin (α-BTX) and human nAChR-α-BTX complexes were found at specific phase of MDS. Our findings suggest that specific mutations in the binding site of toxin are potentially preventing the formation of stable complex of receptor-toxin, which might lead to mechanism of resistance. This in silico study on the binding cleft of nAChR and the findings of interacting residues will assist in designing potential inhibitors as therapeutic targets.
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Affiliation(s)
- D Gunasekaran
- a UGC-Networking Resource Centre in Biological Sciences, School of Biological Sciences , Madurai Kamaraj University , Madurai 625021 , India
| | - J Sridhar
- a UGC-Networking Resource Centre in Biological Sciences, School of Biological Sciences , Madurai Kamaraj University , Madurai 625021 , India.,b Department of Biotechnology (DDE) , Madurai Kamaraj University , Madurai 625021 , India
| | - V Suryanarayanan
- c Computer Aided Drug Design and Molecular Modelling Lab, Department of Bioinformatics , Alagappa University , Karaikudi 630003 , Tamil Nadu , India
| | - N C Manimaran
- a UGC-Networking Resource Centre in Biological Sciences, School of Biological Sciences , Madurai Kamaraj University , Madurai 625021 , India
| | - Sanjeev Kumar Singh
- c Computer Aided Drug Design and Molecular Modelling Lab, Department of Bioinformatics , Alagappa University , Karaikudi 630003 , Tamil Nadu , India
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