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Risk factors for upper urinary tract uroliths and ureteral obstruction in cats under referral veterinary care in the United Kingdom (2023)
Journal Article
Geddes, R. F., Davison, L. J., Elliott, J., Syme, H. M., & O'Neill, D. G. (2023). Risk factors for upper urinary tract uroliths and ureteral obstruction in cats under referral veterinary care in the United Kingdom. Journal of Veterinary Internal Medicine, 37(2), 567-577. https://doi.org/10.1111/jvim.16659

Background Cats presenting with upper urinary tract uroliths (UUTUs) and ureteral obstruction (“obstructive UUTU”) are typically younger than cats with idiopathic CKD that often have incidental nephroliths. Hypothesis Cats with upper urinary tra... Read More about Risk factors for upper urinary tract uroliths and ureteral obstruction in cats under referral veterinary care in the United Kingdom.

Ionized hypercalcemia in 238 cats from a referral hospital population (2009‐2019) (2023)
Journal Article
Broughton, S. E., O'Neill, D. G., Syme, H. M., & Geddes, R. F. (in press). Ionized hypercalcemia in 238 cats from a referral hospital population (2009‐2019). Journal of Veterinary Internal Medicine, https://doi.org/10.1111/jvim.16627

Background Ionized calcium concentration ([iCa]) is more sensitive for detecting calcium disturbances than serum total calcium concentration but literature on ionized hypercalcemia in cats is limited. Urolithiasis is a possible adverse consequence o... Read More about Ionized hypercalcemia in 238 cats from a referral hospital population (2009‐2019).

Secondary Hypertension And Its Treatment In Cats (2022)
Journal Article
Geddes, R. (2022). Secondary Hypertension And Its Treatment In Cats. Companion Animal, https://doi.org/10.12968/coan.2021.0070

Secondary hypertension, due to an underlying disease, is common in older cats especially in cats with CKD and/or hyperthyroidism. Systolic blood pressure (SBP) should be measured whenever an associated disease is diagnosed and persistent SBP >160mmHg... Read More about Secondary Hypertension And Its Treatment In Cats.

New concepts in phosphorus homeostasis and its impact on renal health with particular reference to the cat (2022)
Journal Article
Elliott, J., & Geddes, R. F. (2022). New concepts in phosphorus homeostasis and its impact on renal health with particular reference to the cat. The Veterinary Journal, 283-284, Article 105842. https://doi.org/10.1016/j.tvjl.2022.105842

New discoveries relating to phosphorus homeostasis include the hormones fibroblast growth factor-23 and klotho produced by bone and kidney. These hormones, together with novel understanding of how calcium and phosphate ions are carried in colloidal f... Read More about New concepts in phosphorus homeostasis and its impact on renal health with particular reference to the cat.

Feline Comorbidities: Balancing Hyperthyroidism and Concurrent Chronic Kidney Disease (2022)
Journal Article
Geddes, R., & Aguiar, J. (2022). Feline Comorbidities: Balancing Hyperthyroidism and Concurrent Chronic Kidney Disease. Journal of Feline Medicine and Surgery, https://doi.org/10.1177/1098612X221090390

Practical relevance - Both hyperthyroidism and chronic kidney disease are common long-lasting conditions in older cats, which might be diagnosed concurrently or develop at different times. Hyperthyroidism may mask the presence of chronic kidney disea... Read More about Feline Comorbidities: Balancing Hyperthyroidism and Concurrent Chronic Kidney Disease.

Machine-learning based prediction of Cushing’s syndrome in dogs attending UK primary-care veterinary practice (2021)
Journal Article
Schofield, I., Brodbelt, D. C., Kennedy, N., Niessen, S. J. M., Church, D. B., Geddes, R. F., & O’Neill, D. G. (2021). Machine-learning based prediction of Cushing’s syndrome in dogs attending UK primary-care veterinary practice. Scientific Reports, 11(1), https://doi.org/10.1038/s41598-021-88440-z

Cushing’s syndrome is an endocrine disease in dogs that negatively impacts upon the quality-of-life of affected animals. Cushing’s syndrome can be a challenging diagnosis to confirm, therefore new methods to aid diagnosis are warranted. Four machine-... Read More about Machine-learning based prediction of Cushing’s syndrome in dogs attending UK primary-care veterinary practice.

Risk factors associated with disturbances of calcium homeostasis after initiation of a phosphate-restricted diet in cats with chronic kidney disease (2020)
Journal Article
Jepson, R., Elliott, J., Geddes, R., Chang, Y., & Tang, P. (2020). Risk factors associated with disturbances of calcium homeostasis after initiation of a phosphate-restricted diet in cats with chronic kidney disease. Journal of Veterinary Internal Medicine, 1-12. https://doi.org/10.1111/jvim.15996

Background Dietary phosphate restriction improves survival in cats with chronic kidney disease (CKD). However, feeding a phosphate‐restricted diet may disrupt calcium homeostasis leading to hypercalcemia in some cats. Objectives To identify... Read More about Risk factors associated with disturbances of calcium homeostasis after initiation of a phosphate-restricted diet in cats with chronic kidney disease.

Factors associated with positive urine cultures in cats with subcutaneous ureteral bypass system implantation (2020)
Journal Article
Pennington, C. E., Halfacree, Z., Colville-Hyde, C., & Geddes, R. F. (2020). Factors associated with positive urine cultures in cats with subcutaneous ureteral bypass system implantation. Journal of Feline Medicine and Surgery, 1098612X2095031. https://doi.org/10.1177/1098612X20950312

Objectives The aims of this study were to report the postoperative incidence of subcutaneous ureteral bypass (SUB)-associated bacteriuria and risk factors in a large population of UK cats, to identify the commonly implicated isolates in these cases... Read More about Factors associated with positive urine cultures in cats with subcutaneous ureteral bypass system implantation.

Hypertension: Why Is It Critical? (2020)
Journal Article
Geddes, R. F. (2020). Hypertension: Why Is It Critical?. Veterinary Clinics of North America: Small Animal Practice, 50, 1037-1052

Hypertension is a common problem, particularly in older cats. Hypertension secondary to a concurrent disease is the most common form of hypertension in cats, particularly in association with chronic kidney disease or hyperthyroidism. However, idiopat... Read More about Hypertension: Why Is It Critical?.

Calcitonin Response to Naturally Occurring Ionized Hypercalcemia in Cats with Chronic Kidney Disease (2018)
Journal Article
Van Den Broek, D. H. N., Geddes, R. F., Williams, T. L., Chang, Y. M., Elliott, J., & Jepson, R. E. (2018). Calcitonin Response to Naturally Occurring Ionized Hypercalcemia in Cats with Chronic Kidney Disease. Journal of Veterinary Internal Medicine, 32(2), 727-735. https://doi.org/10.1111/jvim.15051

Background: Hypercalcemia is commonly associated with chronic kidney disease (CKD) in cats. Objectives: To explore the calcitonin response to naturally occurring ionized hypercalcemia in cats with azotemic CKD, and to assess the relationship of... Read More about Calcitonin Response to Naturally Occurring Ionized Hypercalcemia in Cats with Chronic Kidney Disease.