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Pardo M, Spencer E, Odunayo A, Ramirez ML, Rudloff E, Shafford H, Weil A, Wolff E. 2024 AAHA Fluid Therapy Guidelines for Dogs and Cats. J Am Anim Hosp Assoc 2024; 60:131-163. [PMID: 38885492 DOI: 10.5326/jaaha-ms-7444] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/20/2024]
Abstract
Fluids are drugs used in veterinary patients capable of producing beneficial therapeutic or inadvertent harmful effects within the body's intravascular, interstitial, and intracellular fluid spaces. The individualized design of a fluid therapy plan requires careful patient assessment and targeted selection of proper fluid types, administration routes, and rates, along with adjustments during therapy tailored specifically as per the individual patient's fluid requirement and therapeutic response. Personalized fluid prescriptions and vigilant patient monitoring help avoid patient morbidity from body fluid deficiencies, fluid excess, and electrolyte derangements and support better patient outcomes. These guidelines provide an overview of fluid dynamics within the fluid spaces of the body, describe various types of fluids and their uses, and outline recommendations for fluid administration for resuscitation, rehydration, and maintenance purposes. The guidelines also outline approaches to fluid therapy for anesthetized patients and reiterate the recommendations of reduced fluid rates in this population of patients. Additionally, the guidelines include practical fluid therapy strategies for patients with various common disorders. The goal of these guidelines is to help veterinary professionals safely and effectively prescribe and administer fluid therapy for canine and feline patients.
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Affiliation(s)
- Mariana Pardo
- Critical Care Veterinarian Consulting, Pleasantville, New York (M.P.)
| | - Erin Spencer
- Veterinary Emergency Group, Derry, New Hampshire (E.S.)
| | | | - Mary L Ramirez
- North Dallas Veterinary Emergency and Specialty Hospital, Frisco, Texas (M.L.R.)
| | - Elke Rudloff
- Blue Pearl Pet Hospice, Milwaukee, Wisconsin (E.R.)
| | - Heidi Shafford
- Veterinary Anesthesia Specialists, Gladstone, Oregon (H.S.)
| | - Ann Weil
- Purdue University, West Lafayette, Indiana (A.W.)
| | - Ewan Wolff
- Blue Pearl NE Portland, Portland, Oregon (E.W.)
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Boegel A, Flamme I, Krebber R, Settje T, Schmidt F, Kruedewagen E, Mangold‐Gehring S, Lainesse C, Moritz A, Beddies G. Pharmacodynamic effects of molidustat on erythropoiesis in healthy cats. J Vet Intern Med 2024; 38:381-387. [PMID: 37994487 PMCID: PMC10800175 DOI: 10.1111/jvim.16827] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2022] [Accepted: 07/12/2023] [Indexed: 11/24/2023] Open
Abstract
BACKGROUND Inhibition of hypoxia-inducible factor prolyl hydroxylase (HIF-PH) stimulates erythropoiesis in rats, dogs, monkeys, and humans. HYPOTHESIS/OBJECTIVE Determine if molidustat, a novel HIF-PH inhibitor, stimulates erythropoiesis in healthy cats. ANIMALS Seventeen healthy adult laboratory cats. METHODS Randomized, placebo-controlled study. Cats were treated PO once daily with suspensions of 0 (Group 1; n = 6), 5 (Group 2; n = 6), or 10 (Group 3; n = 5) mg/kg of molidustat. Effects on red blood cell parameters, reticulocyte indices and plasma erythropoietin (EPO) concentrations were evaluated. Molidustat treatment was stopped when hematocrit (HCT) exceeded 60%. RESULTS Compared to placebo, a significant increase in mean HCT was evident starting on Day 14 (Group 2:54.4% vs 40.3%, P < .001, 95% confidence interval [CI] for the difference [8.95-19.28]; Group 3:61.2% vs 40.3%, P < .001, 95% CI [15.48-26.43]) and remained significantly higher for the entire treatment period. In molidustat-treated groups, HCT exceeded 60% on Day 21 (Group 2) and Day 14 (Group 3). Mean HCT in molidustat-treated cats returned to within the reference range (29%-45%) after Day 56 and was numerically comparable to placebo from Day 70 onwards. Red blood cell count and hemoglobin concentrations followed a similar pattern as HCT. Mean EPO concentrations significantly increased after molidustat administration on all assessment days. Molidustat treatments were well tolerated. CONCLUSIONS AND CLINICAL IMPORTANCE Marked erythropoietic effects were identified after daily administration of molidustat to healthy cats and additional studies are warranted to evaluate the effects in anemic cats.
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Charles S, Süssenberger R, Settje T, Langston C, Lainesse C. Use of molidustat, a hypoxia-inducible factor prolyl hydroxylase inhibitor, in chronic kidney disease-associated anemia in cats. J Vet Intern Med 2024; 38:197-204. [PMID: 37740521 PMCID: PMC10800191 DOI: 10.1111/jvim.16807] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2022] [Accepted: 06/27/2023] [Indexed: 09/24/2023] Open
Abstract
BACKGROUND Erythropoietic effects of molidustat, a hypoxia-inducible factor prolyl hydroxylase (HIF-PH) inhibitor, were previously demonstrated in healthy cats. OBJECTIVE To evaluate the safety and erythropoietic effects of daily PO administration of molidustat in anemic cats with chronic kidney disease (CKD). ANIMALS Twenty-one client-owned CKD cats (4-17 years old) with anemia. METHODS Multicenter field study; randomized, masked, and placebo-controlled. Cats were treated PO once daily for 28 days with suspensions of control product (CP; n = 6) or 5 mg/kg of molidustat (n = 15). Hematocrit (HCT) was evaluated at weekly intervals. Individual cat treatment success was defined as a ≥4% point increase in HCT compared to baseline. RESULTS Control group mean HCT remained low throughout the study (20.1%-23.4%). Mean HCT of molidustat-treated cats increased weekly, and a significant increase compared to baseline (23.6%) was first observed on Day 21 (27.3%; P < .001; 95% confidence interval [CI], 1.69-5.67). Compared to CP group, mean HCT was significantly higher on Day 21 (27.3% vs 20.1%; P < .001; 95% CI, 2.91-10.75) but not significantly higher on Day 28 (27.8% vs 23.4%; P = .06; 95% CI, -0.23 to 9.88). The number of individual treatment successes on Day 28 was higher among remaining molidustat-treated cats (7/14) compared to remaining control cats (1/5), but there was no significant difference between groups. CONCLUSIONS AND CLINICAL IMPORTANCE Daily PO molidustat administration may stimulate a clinically relevant erythropoietic response in anemic cats with CKD. This HIF-PH inhibitor may be an alternative for managing anemia in cats compared to recombinant EPO treatment.
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Affiliation(s)
- Samuel Charles
- Research and Breakthrough InnovationElanco Animal Health Inc.GreenfieldIndianaUSA
| | | | | | | | - Chantal Lainesse
- IntegRxal Consulting Strategies, Inc.SaskatoonSaskatchewanCanada
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Vaden SL, Kendall AR, Foster JD, New HL, Eagleson JS, May JL, Traas AM, Wilson MJ, McIntyre BH, Hinderer CJ, Olenick LK, Wilson JM. Adeno-associated virus-vectored erythropoietin gene therapy for anemia in cats with chronic kidney disease. J Vet Intern Med 2023; 37:2200-2210. [PMID: 37847024 PMCID: PMC10658539 DOI: 10.1111/jvim.16900] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2023] [Accepted: 09/27/2023] [Indexed: 10/18/2023] Open
Abstract
BACKGROUND A treatment of chronic kidney disease (CKD)-associated anemia in cats is needed. SB-001 is an adeno-associated virus-vectored (AAV)-based gene therapeutic agent that is administered intramuscularly, causing the expression of feline erythropoietin. HYPOTHESIS/OBJECTIVE We hypothesized that SB-001 injection would lead to a sustained increase in PCV in cats with CKD-associated anemia. ANIMALS Twenty-three cats with International Renal Interest Society (IRIS) Stage 2 to 4 CKD-associated anemia were enrolled at 4 veterinary clinics. METHODS In a prospective clinical trial, cats were treated with 1 of 3 regimens of SB-001 (Lo 1.2 × 109 genome copies [GCs] on Day 0; Lo ± Hi [supplemental 2nd dose of 3.65 × 109 GC on Day 42]; Hi 3.65 × 109 GC IM on Day 0) and followed for 70 days. RESULTS A response to SB-001 at any time between Day 28 and Day 70 was seen in 86% (95% confidence interval 65, 97%) of all cats. There was a significant (P < .003) increase in PCV from Day 0 to Day 28 (mean increase 6 ± 6 percentage points [pp]; n = 21), Day 42 (8 ± 9 pp; n = 21), Day 56 (10 ± 11 pp; n = 17), and Day 70 (13 ± 14 pp, n = 14). Twelve cats were hypertensive at baseline, 4 of which developed encephalopathy during the study. An additional 6 cats became hypertensive during the study. CONCLUSIONS AND CLINICAL IMPORTANCE Results of this study suggest that SB-001 therapy represents a suitable single injection treatment that can address nonregenerative anemia in cats with CKD. It was generally well tolerated; however, hypertension and encephalopathy developed in some cats as previously described in association with erythropoiesis-stimulating agent therapy.
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Affiliation(s)
- Shelly L. Vaden
- Department of Clinical Sciences, College of Veterinary MedicineNorth Carolina State UniversityRaleighNorth Carolina27607USA
| | - Allison R. Kendall
- Department of Clinical Sciences, College of Veterinary MedicineNorth Carolina State UniversityRaleighNorth Carolina27607USA
| | | | - Heidi L. New
- VCA Sacramento Veterinary Referral CenterSacramentoCalifornia95287USA
| | | | | | | | | | | | - Christian J. Hinderer
- Gene Therapy Program, Department of Medicine, Perelman School of MedicineUniversity of PennsylvaniaPhiladelphiaPennsylvania19104USA
| | | | - James M. Wilson
- Gene Therapy Program, Department of Medicine, Perelman School of MedicineUniversity of PennsylvaniaPhiladelphiaPennsylvania19104USA
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Elliott J. Therapeutics of managing reduced red cell mass associated with chronic kidney disease - Is there a case for earlier intervention? J Vet Pharmacol Ther 2023; 46:145-157. [PMID: 37036059 DOI: 10.1111/jvp.13127] [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: 02/08/2023] [Revised: 03/27/2023] [Accepted: 03/28/2023] [Indexed: 04/11/2023]
Abstract
Reduced red cell mass is a poor prognostic indicator in chronic kidney disease (CKD) patients. Whilst overt anaemia impacts on the quality of life of patients with CKD, lowered red cell mass may also compromise oxygen delivery to proximal tubular cells and contribute to progressive kidney injury. Epidemiological data from cats with CKD support this hypothesis although controlled interventional studies involving drugs that raise red cell mass in trials designed to test this hypothesis are lacking in both human and veterinary medicine. Recombinant analogues of erythropoietin (EPO) are currently standard of care for human CKD patients where low red cell mass impacts on their quality of life. Resistance to EPO is encountered in 20% to 40% of patients treated, probably due to functional iron deficiency, reflecting the difficulties of managing iron deficiency associated with the chronic inflammation of CKD. Similar issues are likely faced in managing anaemia in feline CKD although published data on the use of human EPO analogues are limited as such treatment in cats risks antibody formation resulting in red cell aplasia and transfusion dependency and so is reserved for late stage cases only. This article reviews the recent alternative therapeutic approach to increase red cell mass using HIF-prolyl hydroxylase inhibitors and explains their mode of action and theoretical advantages over EPO analogues in the context of iron metabolism. The results of human clinical trials and the potential benefit of adopting this approach in feline CKD patients are discussed.
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Affiliation(s)
- Jonathan Elliott
- Department of Comparative Biomedical Sciences, Royal Veterinary College, London, NW1 0TU, UK
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Betting A, Schweighauser A, Francey T. Diagnostic value of reticulocyte indices for the assessment of the iron status of cats with chronic kidney disease. J Vet Intern Med 2022; 36:619-628. [PMID: 35090061 PMCID: PMC8965245 DOI: 10.1111/jvim.16367] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Revised: 01/08/2022] [Accepted: 01/11/2022] [Indexed: 12/01/2022] Open
Abstract
Background Reticulocyte indices have been suggested as alternatives to transferrin saturation (TSAT) for iron status assessment in humans and dogs but they have not been evaluated thoroughly in cats. Objectives To assess the value of the reticulocyte indices for the diagnosis of iron deficiency in cats with chronic kidney disease (CKD) and chronic hematuria associated with subcutaneous ureteral bypasses (SUBs). Animals Sixty‐four cats: 16 healthy, 14 CKD without SUB, and 34 CKD with SUB. Methods Prospective observational cross‐sectional study of cats presented for routine nephrology visits. Primary outcomes included assessment of the diagnostic values of erythrocyte indices (mean corpuscular volume, hemoglobin, and hemoglobin concentration: MCV, MCH, and MCHC) and reticulocyte indices (mean corpuscular volume, MCVr; corpuscular hemoglobin, CHr), using TSAT as reference. Results Iron deficiency was diagnosed in 9/64 cats (14%). A receiver‐operating characteristic curve analysis yielded a moderate discriminatory value for CHr in this diagnosis: area under the curve [AUC] = .75 (95% confidence interval, 0.48‐0.89); P = .006; sensitivity 67%, specificity 82% for a cutoff of 15.9 pg. This compared favorably to MCVr (AUC = .63; P = .29), MCV (AUC = .58; P = .45), MCH (AUC = .64; P = .19), and MCHC (AUC = .7; P = .03). Conclusion and Clinical Importance CHr added moderate value to the diagnosis of iron deficiency in cats with CKD.
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Affiliation(s)
- Adeline Betting
- Division of Small Animal Internal Medicine, Department of Clinical Veterinary Medicine, Vetsuisse Faculty University of Bern, Bern, Switzerland
| | - Ariane Schweighauser
- Division of Small Animal Internal Medicine, Department of Clinical Veterinary Medicine, Vetsuisse Faculty University of Bern, Bern, Switzerland
| | - Thierry Francey
- Division of Small Animal Internal Medicine, Department of Clinical Veterinary Medicine, Vetsuisse Faculty University of Bern, Bern, Switzerland
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Lawson JS, Jepson RE. Feline comorbidities: The intermingled relationship between chronic kidney disease and hypertension. J Feline Med Surg 2021; 23:812-822. [PMID: 34428941 PMCID: PMC10812150 DOI: 10.1177/1098612x211037872] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
PRACTICAL RELEVANCE Chronic kidney disease (CKD) is a highly prevalent disorder of senior cats. CKD is frequently diagnosed in association with hypertension, and the two conditions have an intermingled cause-and-effect relationship. Hypertensive target organ damage (TOD) to the eye, brain, heart and kidney significantly impacts the welfare of cats suffering from this comorbidity. Hypertension also drives proteinuria, which is an independent risk factor for progression and mortality in cats with CKD. Blood pressure monitoring and institution of effective antihypertensive treatment, where indicated, is therefore crucial in effective management of the feline CKD patient. Current guidelines recommend a target systolic blood pressure of <160 mmHg to minimise risk of TOD. Both amlodipine besylate and telmisartan are effective antihypertensive agents for use in these patients. CLINICAL CHALLENGES Clinical signs of hypertension may not be apparent to owners of affected cats until severe hypertensive TOD is present. Despite this, blood pressure monitoring in cats with CKD is still infrequently performed, and hypertension likely remains underdiagnosed in this population. EVIDENCE BASE This review is based upon evaluation of the currently available published literature, including relevant consensus statements. There is a large body of evidence supporting the association between hypertension and CKD in cats. However, significant aspects, such as the mechanisms behind this association, and effect of hypertension and antihypertensive treatment on mortality and progression of CKD, remain unclear. Further research is therefore required in order to improve understanding of these conditions.
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Affiliation(s)
- Jack S Lawson
- Clinical Sciences and Services, The Royal Veterinary College, Hawkshead Lane, North Mymms, Hatfield, Hertfordshire, UK
| | - Rosanne E Jepson
- Clinical Sciences and Services, The Royal Veterinary College, Hawkshead Lane, North Mymms, Hatfield, Hertfordshire, UK
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Winzelberg Olson S, Hohenhaus AE. Feline non-regenerative anemia: Diagnostic and treatment recommendations. J Feline Med Surg 2019; 21:615-631. [PMID: 31234748 PMCID: PMC10814193 DOI: 10.1177/1098612x19856178] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
PRACTICAL RELEVANCE Non-regenerative anemia, or anemia with reticulocytopenia, is a daily diagnosis in feline practice. CLINICAL CHALLENGES The disease processes underlying non-regenerative anemia are many and diverse. A major diagnostic evaluation may be required to correctly diagnose and treat the underlying cause. AUDIENCE All veterinarians caring for cats will face the diagnostic and therapeutic challenge of non-regenerative anemia. Readers will benefit from the review of diagnostic testing and therapeutic options for non-regenerative anemia. EVIDENCE BASE This review summarizes the currently available literature informing diagnostic and treatment recommendations related to non-regenerative anemia. The evidence available to support the recommendations in this review is graded as low and includes predominantly expert opinion, case reports and cases series, on which the authors' interpretation/consensus is based.
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Affiliation(s)
- Sarah Winzelberg Olson
- DVM, Diplomate ACVIM (Oncology and Small Animal Internal Medicine) Animal Medical Center, New York, NY, USA
| | - Ann E Hohenhaus
- DVM, Diplomate ACVIM (Oncology and Small Animal Internal Medicine) Animal Medical Center, New York, NY, USA
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Acierno MJ, Brown S, Coleman AE, Jepson RE, Papich M, Stepien RL, Syme HM. ACVIM consensus statement: Guidelines for the identification, evaluation, and management of systemic hypertension in dogs and cats. J Vet Intern Med 2018; 32:1803-1822. [PMID: 30353952 PMCID: PMC6271319 DOI: 10.1111/jvim.15331] [Citation(s) in RCA: 277] [Impact Index Per Article: 46.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2018] [Accepted: 08/29/2018] [Indexed: 12/12/2022] Open
Abstract
An update to the 2007 American College of Veterinary Internal Medicine (ACVIM) consensus statement on the identification, evaluation, and management of systemic hypertension in dogs and cats was presented at the 2017 ACVIM Forum in National Harbor, MD. The updated consensus statement is presented here. The consensus statement aims to provide guidance on appropriate diagnosis and treatment of hypertension in dogs and cats.
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Affiliation(s)
- Mark J Acierno
- Department of Medicine, College of Veterinary Medicine, Midwestern University, 5715 W. Utopia Rd, Glendale Arizona 85308
| | - Scott Brown
- College of Veterinary Medicine, University of Georgia, Athens, Georgia
| | - Amanda E Coleman
- College of Veterinary Medicine, University of Georgia, Athens, Georgia
| | - Rosanne E Jepson
- Department of Clinical Science and Services, Royal Veterinary College, London, United Kingdom
| | - Mark Papich
- College of Veterinary Medicine, North Carolina State University, Raleigh, North Carolina
| | - Rebecca L Stepien
- Department of Medical Sciences, University of Wisconsin School of Veterinary Medicine, Madison, Wisconsin
| | - Harriet M Syme
- Department of Clinical Science and Services, Royal Veterinary College, London, United Kingdom
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Fiocchi EH, Cowgill LD, Brown DC, Markovich JE, Tucker S, Labato MA, Callan MB. The Use of Darbepoetin to Stimulate Erythropoiesis in the Treatment of Anemia of Chronic Kidney Disease in Dogs. J Vet Intern Med 2017; 31:476-485. [PMID: 28256075 PMCID: PMC5354051 DOI: 10.1111/jvim.14681] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2016] [Revised: 01/16/2017] [Accepted: 01/30/2017] [Indexed: 11/30/2022] Open
Abstract
Background Darbepoetin alfa (darbepoetin) is an erythropoiesis‐stimulating agent used for the treatment of anemia secondary to chronic kidney disease (CKD) in dogs, but reports describing response are lacking. Hypothesis/Objectives To evaluate the effectiveness of darbepoetin in dogs with anemia secondary to CKD, dosing protocols, and adverse events. Animals Thirty‐three client‐owned dogs with naturally occurring CKD, including 26 with comorbidities. Methods Multi‐institutional retrospective study. Results The median starting dosage and highest dosage of darbepoetin administered were 0.5 and 0.8 μg/kg SC once weekly, respectively. Response to treatment was defined as achieving a packed cell volume (PCV) ≥30% or an increase in PCV ≥10%. Twenty‐eight of 33 dogs (85%) achieved a PCV ≥30% and 22 of 33 (67%) dogs achieved an increase in PCV ≥10%. Median time to achieve a PCV ≥30% was 29 days. A higher starting dosage was associated with achieving an increase in PCV ≥10% (P = .01). No dog sustained a response at a dosing interval >q21d. Potential adverse events included increased blood pressure requiring treatment (n = 12), seizures (n = 5), vomiting (n = 3), diarrhea (n = 3), and possible pure red cell aplasia (PRCA) (n = 2). Conclusions and Clinical Importance Darbepoetin, when combined with treatment of comorbidities, is an effective treatment for anemia secondary to CKD in dogs. A dosing interval >q21d was ineffective at maintaining a response to treatment. PRCA was a possible adverse event in 2 of 33 dogs (6%).
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Affiliation(s)
- E H Fiocchi
- Department of Clinical Studies, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, PA
| | - L D Cowgill
- Department of Medicine and Epidemiology, School of Veterinary Medicine, University of California-Davis, Davis, CA
| | - D C Brown
- Department of Clinical Studies, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, PA
| | - J E Markovich
- Department of Clinical Sciences, Cummings School of Veterinary Medicine, Tufts University, North Grafton, MA
| | - S Tucker
- Department of Clinical Sciences, Cummings School of Veterinary Medicine, Tufts University, North Grafton, MA
| | - M A Labato
- Department of Clinical Sciences, Cummings School of Veterinary Medicine, Tufts University, North Grafton, MA
| | - M B Callan
- Department of Clinical Studies, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, PA
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Taylor SS, Sparkes AH, Briscoe K, Carter J, Sala SC, Jepson RE, Reynolds BS, Scansen BA. ISFM Consensus Guidelines on the Diagnosis and Management of Hypertension in Cats. J Feline Med Surg 2017; 19:288-303. [PMID: 28245741 PMCID: PMC11119534 DOI: 10.1177/1098612x17693500] [Citation(s) in RCA: 55] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/27/2024]
Abstract
Practical relevance: Feline hypertension is a common disease in older cats that is frequently diagnosed in association with other diseases such as chronic kidney disease and hyperthyroidism (so-called secondary hypertension), although some cases of apparent primary hypertension are also reported. The clinical consequences of hypertension can be severe, related to 'target organ damage' (eye, heart and vasculature, brain and kidneys), and early diagnosis followed by appropriate therapeutic management should help reduce the morbidity associated with this condition. Clinical challenges: Despite being a common disease, routine blood pressure (BP) monitoring is generally performed infrequently, probably leading to underdiagnosis of feline hypertension in clinical practice. There is a need to: (i) ensure BP is measured as accurately as possible with a reproducible technique; (ii) identify and monitor patients at risk of developing hypertension; (iii) establish appropriate criteria for therapeutic intervention; and (iv) establish appropriate therapeutic targets. Based on current data, amlodipine besylate is the treatment of choice to manage feline hypertension and is effective in the majority of cats, but the dose needed to successfully manage hypertension varies between individuals. Some cats require long-term adjuvant therapy and, occasionally, additional therapy is necessary for emergency management of hypertensive crises. Evidence base: These Guidelines from the International Society of Feline Medicine (ISFM) are based on a comprehensive review of the currently available literature, and are aimed at providing practical recommendations to address the challenges of feline hypertension for veterinarians. There are many areas where more data is required which, in the future, will serve to confirm or modify some of the recommendations in these Guidelines.
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Affiliation(s)
| | | | - Katherine Briscoe
- Animal Referral Hospital, 250 Parramatta Road, Homebush, Sydney, NSW 2140, Australia
| | - Jenny Carter
- PO Box 128209, Remuera, Auckland 1541, New Zealand
| | | | - Rosanne E Jepson
- Clinical Sciences and Services, Royal Veterinary College, Hawkshead Lane, Hatfield, Hertfordshire, AL9 7TA, UK
| | | | - Brian A Scansen
- Associate Professor, Department of Clinical Sciences, Colorado State University, Campus Delivery 1678, Fort Collins, CO 80523, USA
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Quimby JM. Update on Medical Management of Clinical Manifestations of Chronic Kidney Disease. Vet Clin North Am Small Anim Pract 2016; 46:1163-81. [DOI: 10.1016/j.cvsm.2016.06.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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Sparkes AH, Caney S, Chalhoub S, Elliott J, Finch N, Gajanayake I, Langston C, Lefebvre HP, White J, Quimby J. ISFM Consensus Guidelines on the Diagnosis and Management of Feline Chronic Kidney Disease. J Feline Med Surg 2016; 18:219-39. [PMID: 26936494 PMCID: PMC11148907 DOI: 10.1177/1098612x16631234] [Citation(s) in RCA: 78] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/27/2024]
Abstract
PRACTICAL RELEVANCE Chronic kidney disease (CKD) is one of the most commonly diagnosed diseases in older cats. In most cats, CKD is also a progressive disease and can be accompanied by a wide range of clinical and clinicopathological changes. These ISFM Consensus Guidelines have been developed by an independent panel of clinicians and academics to provide practical advice on the diagnosis and management of this complex disease. CLINICAL CHALLENGES Although CKD is a common clinical problem in cats, the manifestations of disease vary between individuals. Thus there is a need for careful and repeat evaluation of cats with CKD and adjustment of therapy according to individual needs. In addition to addressing problems arising from CKD and improving quality of life (QoL) for the patient, therapy may also target slowing the underlying progression of disease and hence prolonging life. While maintaining QoL is of paramount importance in our patients, this can be challenging when multiple therapies are indicated. In some cases it is necessary to prioritise therapy, given an understanding of what is likely to most benefit the individual patient. EVIDENCE BASE In preparing these Guidelines, the Panel has carefully reviewed the existing published literature, and has also graded the quality of evidence for different interventions to help to provide practical recommendations on the therapeutic options for feline CKD. This is a field of veterinary medicine that has benefited from some excellent published clinical research and further research findings will undoubtedly modify the recommendations contained in these Guidelines in the future.
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Affiliation(s)
| | | | - Serge Chalhoub
- Faculty of Veterinary Medicine, University of Calgary, Canada
| | - Jonathan Elliott
- Department of Comparative Biomedical Sciences, Royal Veterinary College, UK
| | - Natalie Finch
- Bristol Renal, School of Clinical Sciences, University of Bristol, UK
| | | | | | - Hervé P Lefebvre
- Clinical Research Unit, National Veterinary School of Toulouse (ENVT), France
| | - Joanna White
- Small Animal Specialist Hospital, Sydney, Australia
| | - Jessica Quimby
- Department of Clinical Veterinary Sciences, Colorado State University, USA
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Lynch AM, Respess M, Boll AE, Bozych M, McMichael M, Fletcher DJ, De Laforcade AM, Rozanski EA. Hospital-acquired Anemia in Critically Ill Dogs and Cats: A Multi-Institutional Study. J Vet Intern Med 2016; 30:141-6. [PMID: 26578290 PMCID: PMC4913629 DOI: 10.1111/jvim.13650] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2014] [Revised: 08/17/2015] [Accepted: 09/21/2015] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND Hospital-acquired anemia is commonly described in people but limited information currently is available regarding its prevalence in animals. HYPOTHESIS/OBJECTIVES Assess the prevalence of hospital-acquired anemia in hospitalized critically ill dogs and cats, and examine its relationship with phlebotomy practices, transfusion administration, and survival to discharge. ANIMALS Eight hundred and fifty-one client-owned animals (688 dogs and 163 cats). METHODS A multicenter, observational study was conducted in which packed cell volume (PCV) was recorded at the time of admission and on subsequent hospitalization days. Signalment, number of blood samples obtained, underlying disease, whether or not blood products were administered, duration of hospitalization, and survival to discharge were recorded. RESULTS Admission anemia prevalence was 32%, with overall prevalence during the hospitalization period of 56%. The last recorded PCV was significantly lower than the admission PCV for both dogs (admission PCV, 42% [range, 6-67%]; last recorded PCV, 34% [range, 4-64%], P < .0001) and cats (admission PCV, 31% [range, 6-55%]; last recorded PCV, 26% [range, 10-46%], P < .0001). Patients that developed anemia had significantly more blood samples obtained (nonanemic, 5 blood samples [range, 2-54]; anemic, 7 blood samples [range, 2-49], P < .0001). Hospitalized cats were significantly more likely to develop anemia compared to dogs (P < .0001), but anemic dogs were significantly less likely to survive to discharge (P = .0001). Surgical patients were at higher risk of developing hospital-acquired anemia compared to medical patients (OR, 0.63; 95% CI, 0.4-0.9; P = .01). CONCLUSIONS AND CLINICAL RELEVANCE Hospital-acquired anemia occurred frequently, especially in surgical patients. Additional studies focused on the direct effect of phlebotomy practices on the likelihood of anemia development in hospitalized animals are warranted.
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Affiliation(s)
- A M Lynch
- Cummings School of Veterinary Medicine at Tufts University, North Grafton, MA
- College of Veterinary Medicine, University of Florida, Gainesville, FL
| | | | - A E Boll
- Cornell University College of Veterinary Medicine, Ithaca, NY
| | - M Bozych
- College of Veterinary Medicine at the University of Illinois, Urbana, IL
| | - M McMichael
- College of Veterinary Medicine at the University of Illinois, Urbana, IL
| | - D J Fletcher
- Cornell University College of Veterinary Medicine, Ithaca, NY
| | - A M De Laforcade
- Cummings School of Veterinary Medicine at Tufts University, North Grafton, MA
| | - E A Rozanski
- Cummings School of Veterinary Medicine at Tufts University, North Grafton, MA
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Anderson KM, Wolf KN. Iron deficiency anemia in a ring-tailed lemur (Lemur catta) with concurrent chronic renal failure. J Am Vet Med Assoc 2014; 244:471-5. [PMID: 24479462 DOI: 10.2460/javma.244.4.471] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
CASE DESCRIPTION A 16-year-old vasectomized male ring-tailed lemur (Lemur catta) with a history of suspected chronic renal failure was evaluated because of extreme lethargy, hyperpnea, and abscess of the right pectoral scent gland. CLINICAL FINDINGS Examination of the anesthetized patient revealed an impacted right pectoral scent gland with serosanguineous exudate. A CBC and serum biochemical analysis revealed severe anemia, marked azotemia, hyperphosphatemia, and hypocalcemia. TREATMENT AND OUTCOME Supportive care (including fluid therapy and phosphorus binder administration) was initiated for renal failure; the affected gland was cleaned, and antimicrobials were administered. The patient received 1 blood transfusion, and darbepoetin alfa was administered weekly to stimulate RBC production. Anemia and azotemia persisted. Three months after treatment started, serum iron analysis revealed that iron deficiency was the probable cause for the lack of a consistent regenerative response to darbepoetin injections. Iron dextran injections resulted in a marked regenerative response; however, serum biochemical analysis results after the second injection were consistent with hepatic injury. Hepatic enzyme activities normalized following discontinuation of iron dextran treatment, but the lemur's Hct declined rapidly despite supplementary iron administration PO. The patient developed severe mandibular osteomyelitis and was euthanized because of poor prognosis. Postmortem evaluation of hepatic iron concentration confirmed iron deficiency. CLINICAL RELEVANCE The family Lemuridae is considered prone to hemosiderosis and hemochromatosis, which delayed rapid diagnosis and treatment of the lemur's disease. Apparent hepatic injury following iron dextran injections further complicated treatment. Findings for this lemur support the use of species-specific total iron binding capacity and total serum iron and ferritin concentrations in evaluation of an animal with suspected iron deficiency.
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Affiliation(s)
- Kadie M Anderson
- Point Defiance Zoo and Aquarium, 5400 N Pearl St, Tacoma, WA 98407
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Abstract
PRACTICAL RELEVANCE Chronic kidney disease (CKD) is common in humans as well as in cats, and is a significant human health problem. In feline medicine, despite recent research and improvements in our understanding of the condition, management remains limited by late diagnosis and an inadequate ability to prevent progression of disease. Investigation of future treatments that both delay the progression of CKD and manage clinical signs, and that are also easy and cost effective to administer, is desirable. To this end, we may learn from our colleagues in the medical profession. AUDIENCE CKD is commonly encountered in general practice and so all practitioners dealing with cats will benefit from understanding future treatment possibilities and interventions in the management of CKD. EVIDENCE BASE Large-scale medical studies have been performed to provide an evidence base for treatment decisions in human CKD. Several studies in cats have looked at various aspects of treatment and prognosis, but large-scale studies are needed to assess the benefits of treatments such as angiotensin-converting enzyme inhibitors and angiotensin receptor blockers. CLINICAL CHALLENGES Providing treatment that is effective, easy to administer and not cost-prohibitive is the challenge currently faced by clinicians in the management of feline CKD.
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Affiliation(s)
- Samantha Taylor
- International Society of Feline Medicine, High Street, Tisbury, Wiltshire SP3 6LD, UK
| | - Andrew H Sparkes
- International Society of Feline Medicine, High Street, Tisbury, Wiltshire SP3 6LD, UK
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17
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Abstract
PRACTICAL RELEVANCE Treatment of feline chronic kidney disease (CKD) tends to focus on minimising the adverse effects of reduced renal function, rather than addressing an underlying cause. Despite this, and the progressive nature of CKD, treatment can improve quality of life and enable many cats to have long survival times. EVIDENCE BASE Strong evidence supports the provision of renal diets, which are protein and phosphorus restricted; compliance is improved by gradual dietary transition. Additional phosphorus restriction is achieved by the use of phosphate binding agents, although it is unknown if these yield similar survival benefits to those provided by renal diets. Interventions to control hypokalaemia and hypertension in affected cats are important to prevent serious complications. Administration of benazepril to cats with proteinuric kidney disease has been shown to significantly improve their appetite but not their survival. As CKD progresses, many cats will benefit from treatment to control clinical signs of uraemic gastroenteritis and anaemia.
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Affiliation(s)
- Rachel M Korman
- Feline Friendly Practice, Veterinary Specialist Services, Underwood 4009, Australia
| | - Joanna D White
- Institute of Veterinary, Animal and Biomedical Sciences, Massey University, New Zealand
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18
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Polzin DJ. Evidence-based step-wise approach to managing chronic kidney disease in dogs and cats. J Vet Emerg Crit Care (San Antonio) 2013; 23:205-15. [PMID: 23470210 DOI: 10.1111/vec.12034] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2012] [Accepted: 02/02/2013] [Indexed: 11/28/2022]
Abstract
OBJECTIVE To provide a framework for successfully managing chronic kidney disease (CKD) over an extended period of time with the goal of optimizing clinical outcomes by fostering a veterinarian-client relationship that facilitates successful application of evidence-based treatment. ETIOLOGY Ultimately, CKD results from loss of functional nephrons; however, the specific disease process responsible for this loss usually cannot be determined due to development of chronic changes (eg, fibrosis) and compensatory adaptations that have occurred in the kidneys of patients with CKD. Earlier diagnosis may foster a better understanding of the etiologies of CKD. DIAGNOSIS Diagnosis of CKD is based on establishing loss of kidney function(s) due to primary kidney disease that have been present for an extended time (typically 3 months or longer). THERAPY The goals of therapy are to: (1) slow progressive loss of kidney function, (2) ameliorate clinical and biochemical consequences of CKD, and (3) maintain adequate nutrition. These goals are achieved by: (1) managing adaptive processes that promote progression of CKD, (2) controlling intake of water, nutrients, minerals and electrolytes, and (3) correcting hormonal deficiencies. PROGNOSIS The short-term prognosis for dogs with CKD varies from good to poor, while the long-term prognosis for dogs with CKD is generally guarded to poor depending on the International Renal Interest Society (IRIS) CKD stage of the patient. Both short-term and long-term prognosis for cats with CKD may vary from good to poor depending on the IRIS CKD stage. However, prognosis is more variable and unpredictable in cats.
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Affiliation(s)
- David J Polzin
- Department of Veterinary Clinical Sciences, College of Veterinary Medicine, University of Minnesota, St. Paul, MN 55108, USA.
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Chong ZZ, Shang YC, Wang S, Maiese K. Shedding new light on neurodegenerative diseases through the mammalian target of rapamycin. Prog Neurobiol 2012; 99:128-48. [PMID: 22980037 PMCID: PMC3479314 DOI: 10.1016/j.pneurobio.2012.08.001] [Citation(s) in RCA: 89] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2012] [Revised: 08/01/2012] [Accepted: 08/07/2012] [Indexed: 12/13/2022]
Abstract
Neurodegenerative disorders affect a significant portion of the world's population leading to either disability or death for almost 30 million individuals worldwide. One novel therapeutic target that may offer promise for multiple disease entities that involve Alzheimer's disease, Parkinson's disease, epilepsy, trauma, stroke, and tumors of the nervous system is the mammalian target of rapamycin (mTOR). mTOR signaling is dependent upon the mTORC1 and mTORC2 complexes that are composed of mTOR and several regulatory proteins including the tuberous sclerosis complex (TSC1, hamartin/TSC2, tuberin). Through a number of integrated cell signaling pathways that involve those of mTORC1 and mTORC2 as well as more novel signaling tied to cytokines, Wnt, and forkhead, mTOR can foster stem cellular proliferation, tissue repair and longevity, and synaptic growth by modulating mechanisms that foster both apoptosis and autophagy. Yet, mTOR through its proliferative capacity may sometimes be detrimental to central nervous system recovery and even promote tumorigenesis. Further knowledge of mTOR and the critical pathways governed by this serine/threonine protein kinase can bring new light for neurodegeneration and other related diseases that currently require new and robust treatments.
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Affiliation(s)
- Zhao Zhong Chong
- Laboratory of Cellular and Molecular Signaling, New Jersey 07101
- New Jersey Health Sciences University Newark, New Jersey 07101
| | - Yan Chen Shang
- Laboratory of Cellular and Molecular Signaling, New Jersey 07101
- New Jersey Health Sciences University Newark, New Jersey 07101
| | - Shaohui Wang
- Laboratory of Cellular and Molecular Signaling, New Jersey 07101
- New Jersey Health Sciences University Newark, New Jersey 07101
| | - Kenneth Maiese
- Laboratory of Cellular and Molecular Signaling, New Jersey 07101
- Cancer Institute of New Jersey, New Jersey 07101
- New Jersey Health Sciences University Newark, New Jersey 07101
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