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1.
Cureus ; 14(8): e27931, 2022 Aug.
Article in English | MEDLINE | ID: mdl-36120274

ABSTRACT

BACKGROUND: Molecular syndromic panels can rapidly detect common pathogens responsible for acute gastroenteritis in hospitalized patients. Their impact on both patient and healthcare system outcomes is uncertain compared to conventional stool testing. This randomized trial evaluates the impact of molecular testing on in-hospital resource utilization compared to conventional stool testing. METHODS: Hospitalized patients with acute diarrheal illness were randomized 1:1 to either conventional or molecular stool testing with the BioFire FilmArray gastrointestinal panel (FGP). The primary outcome was the duration of contact isolation, and secondary outcomes included other in-hospital resource utilization such as diagnostic imaging and antimicrobial use. RESULTS: A total of 156 patients were randomized. Randomization resulted in a balanced allocation of patients across all three age strata (<18, 18-69, ≥70 years old). The proportion of positive stools was 20.5% vs 29.5% in the control and FGP groups, respectively (p=0.196). The median duration of contact isolation was 51 hours (interquartile range [iqr] 66) and 69 hours (iqr 81) in the conventional and FGP groups, respectively (p=0.0513). There were no significant differences in other in-hospital resource utilization between groups. CONCLUSIONS: There were no differences in in-hospital resource utilization observed between the FGP and conventional stool testing groups.

2.
Can J Vet Res ; 86(1): 27-34, 2022 Jan.
Article in English | MEDLINE | ID: mdl-34975219

ABSTRACT

Computed tomographic (CT) features of lymph nodes are used for diagnosis, staging, and response evaluation in veterinary patients. The objectives of this study were to describe maximum short- and long-axis transverse diameters (SATD and LATD, respectively), volume, and attenuation of presumed normal canine mandibular lymph nodes (MLNs) and medial retropharyngeal lymph nodes (MRLNs), to investigate the effect of variables on these features, and to describe inter-observer reliability of transverse diameter and attenuation measurement. Computed tomography studies of 161 dogs were retrospectively reviewed. Median values for SATD were 5.2 and 5.4 mm, median values for volume were 0.26 and 0.54 cm3, and median values for attenuation were 32.3 and 31.8 Hounsfield units (HU) for MLN and MRLN, respectively. Median LATD was 11 mm for MLNs. Height of the first cervical vertebra (HCV1) and weight were positively associated with transverse diameters of both MLNs and MRLNs (P < 0.001). Grade of dental disease was negatively associated with transverse diameters of both MLNs (P = 0.001) and MRLNs (P < 0.03). The intraclass correlation coefficient (ICC) was 0.94 [95% confidence interval (CI): 0.94 to 0.95] for transverse diameter measurement. This study provides descriptive data on the CT characteristics of presumed normal MLNs and MRLNs in dogs and describes a highly reliable method of measuring transverse diameter.


Les caractéristiques tomodensitométriques (CT) des ganglions lymphatiques sont utilisées pour le diagnostic, la stadification et l'évaluation de la réponse chez les patients vétérinaires. Les objectifs de cette étude étaient de décrire les diamètres transversaux maximaux à axe court et long (SATD et LATD, respectivement), le volume et l'atténuation des ganglions lymphatiques mandibulaires canins (MLN) et des ganglions lymphatiques rétropharyngés médians (MRLN) présumés normaux, afin d'étudier l'effet de variables sur ces caractéristiques, et pour décrire la fiabilité inter-observateur de la mesure du diamètre transversal et de l'atténuation. Des études de tomodensitométrie de 161 chiens ont été examinées rétrospectivement. Les valeurs médianes pour la SATD étaient de 5,2 et 5,4 mm, les valeurs médianes pour le volume étaient de 0,26 et 0,54 cm3, et les valeurs médianes pour l'atténuation étaient de 32,3 et 31,8 unités Hounsfield (HU) pour MLN et MRLN, respectivement. Le LATD médian était de 11 mm pour les MLN. La hauteur de la première vertèbre cervicale (VHC1) et le poids étaient positivement associés aux diamètres transversaux des MLN et des MRLN (P < 0,001). Le grade de maladie dentaire était négativement associé aux diamètres transversaux des MLN (P = 0,001) et des MRLN (P < 0,03). Le coefficient de corrélation intraclasse (ICC) était de 0,94 [intervalle de confiance (IC) à 95 % : 0,94 à 0,95] pour la mesure du diamètre transversal. Cette étude fournit des données descriptives sur les caractéristiques CT des MLN et MRLN présumés normaux chez le chien et décrit une méthode très fiable de mesure du diamètre transversal.(Traduit par Docteur Serge Messier).


Subject(s)
Lymph Nodes , Tomography, X-Ray Computed , Animals , Dogs , Lymph Nodes/diagnostic imaging , Reproducibility of Results , Retrospective Studies , Tomography, X-Ray Computed/veterinary
3.
Simul Healthc ; 17(1): 7-14, 2022 Feb 01.
Article in English | MEDLINE | ID: mdl-33428356

ABSTRACT

INTRODUCTION: Difficult intravenous (IV) access (DIVA) is frequently encountered in the hospital setting. Ultrasound-guided peripheral IV catheter (USGPIV) insertion has emerged as an effective procedure to establish access in patients with DIVA. Despite the increased use of USGPIV, little is known about the optimal training paradigms for bedside nurses. Therefore, we developed and evaluated a novel, sustainable, USGPIV simulation-based mastery learning (SBML) curriculum for nurses. METHODS: This is a prospective cohort study of an USGPIV SBML training program for bedside nurses over a 12-month period. We evaluated skills and self-confidence before and after training and measured the proportion of the nurses achieving independent, proctor, and instructor status. Procedure logs and surveys were used to explore the nurse experience and utilization of USGPIV on real patients with DIVA 3 months after the intervention. RESULTS: Two hundred thirty-eight nurses enrolled in the study. The USGPIV skill checklist scores increased from median of 6.0 [interquartile range = 4.0-9.0 (pretest) to 29.0, interquartile range = 28-30 (posttest), P < 0.001]. The USGPIV confidence improved from before (mean = 2.32, SD = 1.17) to after (mean = 3.85, SD = 0.73, P < 0.001) training (5-point Likert scale). Sixty-two percent of the nurses enrolled achieved independent status, 47.5% became proctors, and 11.3% course trainers. At 3-month posttraining, the nurses had attempted a mean of 35.6 USGPIV insertions with an 89.5% success rate. CONCLUSIONS: This novel USGPIV SBML curriculum improves nurses' insertion skills, self-confidence, and progresses patient care through USGPIV insertions on hospitalized patients with DIVA.


Subject(s)
Catheterization, Peripheral , Nurses , Catheters , Clinical Competence , Humans , Prospective Studies , Ultrasonography, Interventional
4.
BMC Health Serv Res ; 21(1): 892, 2021 Aug 30.
Article in English | MEDLINE | ID: mdl-34461890

ABSTRACT

BACKGROUND: The Well Now health and weight course teaches body respect and health gain for all. The course validates peoples' lived experiences and knowledge through group activities and discussion with the aim of helping people to better understand their food and body stories. Well Now explores different ways of knowing, including the use and limits of body signals, like energy levels, hunger, taste and emotions and helps people keep food and behaviours in perspective by drawing attention to other factors that impact on health and wellbeing. This study undertook a service evaluation of the Well Now course to understand its acceptability for participants and its impact on diet quality, food preoccupation, physical activity and mental wellbeing. METHODS: This service evaluation combined quantitative pre- and post-course measures with telephone interviews with previous attendees. Paired t-tests were used to determine if there were statistically significant differences in the intended outcomes. Semi-structured qualitative telephone interviews were undertaken with previous attendees 6-12 months after attendance to understand how participants experienced the Well Now course. RESULTS: Significant improvements were demonstrated in diet quality, food preoccupation, physical activity and mental wellbeing outcomes. Medium effect sizes are demonstrated for mental wellbeing and diet quality, with smaller effect sizes shown for physical activity and food preoccupation. The weight and Body Mass Index (BMI) of attendees remained stable in this timeframe. The qualitative data corroborates and extends elements of the quantitative outcomes and highlights areas of the course that may benefit from further development and improvement. The findings further indicate that the Well Now approach is largely acceptable for attendees. CONCLUSIONS: Well Now's non-judgemental holistic approach facilitates change for those who complete the course, and for those who do not. This health gain approach upholds non-maleficence and beneficence, and this is demonstrated with this service evaluation for both completers and partial completers.


Subject(s)
Diet , Exercise , Body Mass Index , Humans , Telephone
5.
Arch Osteoporos ; 14(1): 116, 2019 11 27.
Article in English | MEDLINE | ID: mdl-31776684

ABSTRACT

Fractures occurring with very little trauma are often caused by osteoporosis and can lead to disability. This study demonstrates that a coordinator working with an orthopaedic team can significantly increase the number of individuals receiving appropriate treatments during their after-fracture care to prevent future fractures from occurring. PURPOSE: Well-implemented Fracture Liaison Service (FLS) programs increase appropriate investigation and treatment for osteoporosis after low trauma fracture. This research evaluates the effectiveness of the first FLS program implemented in British Columbia (BC), Canada. METHODS: A controlled before-and-after study was conducted. The intervention was an FLS program implemented at an orthopaedic outpatient clinic at Peace Arch Hospital in BC. Eligible patients were those over the age of 50 years with a low trauma fracture of the hip, pelvis, vertebra, wrist or humerus. A nurse practitioner FLS coordinator identified, investigated and initiated treatment in patients based on their future fracture risk. The primary outcome was the percentage of all patients at high-risk to refracture, who achieved at least one of the following outcomes: (1) started on osteoporosis medication, (2) referred to an osteoporosis consultant or (3) assessed for treatment change if they were already on osteoporosis medication at the time of the fracture. Secondary outcomes included the rate of bone density testing, referral to fall prevention programs and change in health-related quality of life over 6 months. RESULTS: A total of 195 patients participated in the study (65 in the usual care group, 130 in the FLS group). Average age was 70.5 years (standard deviation 11.5), and 84% of participants were female. In the FLS group, 77.8% of high-risk patients achieved the primary outcome compared with 22.9% in the usual care group. CONCLUSION: In BC, the implementation of an FLS program improved investigation and treatment for osteoporosis after low trauma fracture.


Subject(s)
Delivery of Health Care, Integrated/organization & administration , Osteoporosis/drug therapy , Osteoporotic Fractures/prevention & control , Accidental Falls/prevention & control , Aged , Aged, 80 and over , Bone Density/physiology , Bone Density Conservation Agents/therapeutic use , British Columbia , Drug Utilization/statistics & numerical data , Female , Humans , Male , Middle Aged , Osteoporosis/diagnosis , Osteoporosis/physiopathology , Osteoporotic Fractures/physiopathology , Quality of Life , Recurrence , Secondary Prevention/organization & administration , Treatment Outcome
6.
J Vet Intern Med ; 33(2): 953-960, 2019 Mar.
Article in English | MEDLINE | ID: mdl-30636061

ABSTRACT

BACKGROUND: Prognosis associated with lymphoma in horses is poorly characterized, and treatment is often palliative. Long-term outcome after chemotherapy for horses with lymphoma is not well documented. OBJECTIVE: To report long-term outcome of horses with lymphoma treated with chemotherapy. ANIMALS: Fifteen equids. METHODS: Retrospective case series. Medical record search and call for cases on the ACVIM listserv for horses treated with chemotherapy for lymphoma. RESULTS: Fifteen cases with adequate data were identified. Complete remission was achieved in 5 horses (33.3%), partial response was achieved in 9 equids (60%), and stable disease was achieved in 1 horse. Overall response rate was 93.3% (14/15). Overall median survival time was 8 months (range, 1-46 months). Nine horses experienced a total of 14 adverse effects attributable to chemotherapy. Adverse effects were graded according to the Veterinary Cooperative Oncology Group common terminology criteria for adverse events grading system (grade 1 alopecia, n = 2; grade 1 neutropenia, n = 2; grade 1 lymphopenia, n = 3; grade 1 lethargy, n = 1; grade 2 neurotoxicity, n = 1; grade 2 colic, n = 1; grade 1 hypersensitivity, n = 1; grade 2 hypersensitivity, n = 2; grade 5 hypersensitivity, n = 1). Higher grade adverse effects most commonly were associated with doxorubicin administration (n = 4), including 1 horse that died 18 hours post-administration. CONCLUSIONS AND CLINICAL IMPORTANCE: Chemotherapy can be used successfully for treatment of horses with lymphoma. Adverse effects, most commonly mild, occurred in approximately two-thirds of treated horses.


Subject(s)
Antineoplastic Agents/adverse effects , Antineoplastic Agents/therapeutic use , Horse Diseases/drug therapy , Lymphoma/veterinary , Treatment Outcome , Animals , Equidae , Female , Horses , Lymphoma/drug therapy , Male , Remission Induction , Retrospective Studies
8.
BMC Musculoskelet Disord ; 19(1): 423, 2018 Nov 30.
Article in English | MEDLINE | ID: mdl-30497445

ABSTRACT

BACKGROUND: Total knee arthroplasty (TKA) is the most common joint replacement surgery in Canada. Earlier Canadian work reported 1 in 5 TKA patients expressing dissatisfaction following surgery. A better understanding of satisfaction could guide program improvement. We investigated patient satisfaction post-TKA in British Columbia (BC). METHODS: A cohort of 515 adult TKA patients was recruited from across BC. Survey data were collected preoperatively and at 6 and 12 months, supplemented by administrative health data. The primary outcome measure was patient satisfaction with outcomes. Potential satisfaction drivers included demographics, patient-reported health, quality of life, social support, comorbidities, and insurance status. Multivariable growth modeling was used to predict satisfaction at 6 months and change in satisfaction (6 to 12 months). RESULTS: We found dissatisfaction rates ("very dissatisfied", "dissatisfied" or "neutral") of 15% (6 months) and 16% (12 months). Across all health measures, improvements were seen post-surgery. The multivariable model suggests satisfaction at 6 months is predicted by: pre-operative pain, mental health and physical health (odds ratios (ORs) 2.65, 3.25 and 3.16), and change in pain level, baseline to 6 months (OR 2.31). Also, improvements in pain, mental health and physical health from 6 to 12 months predicted improvements in satisfaction (ORs 1.24, 1.30 and 1.55). CONCLUSIONS: TKA is an effective intervention for many patients and most report high levels of satisfaction. However, if the TKA does not deliver improvements in pain and physical health, we see a less satisfied patient. In addition, dissatisfied TKA patients typically see limited improvements in mental health.


Subject(s)
Arthroplasty, Replacement, Knee/adverse effects , Osteoarthritis, Knee/surgery , Pain/surgery , Patient Reported Outcome Measures , Patient Satisfaction/statistics & numerical data , Aged , British Columbia , Female , Humans , Longitudinal Studies , Male , Mental Health/statistics & numerical data , Middle Aged , Osteoarthritis, Knee/complications , Osteoarthritis, Knee/psychology , Pain/diagnosis , Pain/etiology , Pain/psychology , Pain Measurement , Quality of Life/psychology , Socioeconomic Factors
10.
Orthop Nurs ; 37(2): 115-121, 2018.
Article in English | MEDLINE | ID: mdl-29570544

ABSTRACT

BACKGROUND: Fragility hip fracture in older adults often has poor outcomes, but these outcomes can be improved with attention to specific quality care indicators. PURPOSE: The International Collaboration of Orthopaedic Nursing (ICON) developed an audit process to identify the extent to which internationally accepted nursing quality care indicators for older adults with fragility hip fracture are reflected in policies, protocols, and processes guiding acute care. METHODS: A data abstraction tool was created for each of 12 quality indicators. Data were collected using a mixed-methods approach with unstructured rounds. A rationale document providing evidence for the quality indicators and a user evaluation form were included with the audit tool. A purposeful sample of 35 acute care hospitals representing 7 countries was selected. RESULTS: Thirty-five hospitals (100%) completed the survey. Respondents viewed the content as relevant and applicable for the defined patient population. Although timing and frequency of implementation varied among and within countries, the identified quality indicators were reflected in the majority of policies, protocols, or processes guiding care in the hospitals surveyed. CONCLUSION: Developing and testing an audit of nurse-sensitive quality indicators for older adults with fragility hip fracture demonstrate international consensus on common core best practices to ensure optimal acute care.


Subject(s)
Clinical Audit/standards , Hip Fractures/surgery , Quality Indicators, Health Care/standards , Aged , Humans , Surveys and Questionnaires
11.
BMC Musculoskelet Disord ; 18(1): 127, 2017 03 24.
Article in English | MEDLINE | ID: mdl-28340610

ABSTRACT

BACKGROUND: Total knee arthroplasty (TKA) is the most frequently performed joint replacement surgery in North America. Patient perspectives on TKA have been investigated in various ways, including finding as many as 20% of TKA patients are dissatisfied with their surgical outcomes. Understanding the patient experience with TKA broadly and in relation to patient satisfaction is a key gap in existing literature. METHODS: We report on the qualitative component of a mixed methods prospective cohort study examining patient experience and satisfaction post-TKA for adults in British Columbia, Canada. Data collection consisted of 45 in-depth interviews about individuals' knee surgery experiences conducted eight months after surgery. Analysis consisted of thematic coding by multiple coders. RESULTS: Participants' descriptions of their TKA experiences were primarily concerned with support, or the provision of aid and assistance. Support was insufficient when their expectations of support were not met; unmet support expectations led to an overall negative TKA experience. Support operated in three key domains: (1) informational support, (2) clinical support, and (3) personal support. Key sources of informational and clinical support included pre-optimisation clinics, surgeons, and physiotherapists. Key topics for informational support included pain, pain management, and recovery trajectories. Personal support was provided by family, friends, other TKA patients, employers, and themselves. CONCLUSIONS: Patient needs and expectations for support are shaped both before and after TKA surgery. Patients with an overall positive TKA experience had improvement in their knee pain, stiffness or functioning post-TKA, had their major expectations and needs for support met during their TKA recovery, and believed that any significant future expectations or needs for ongoing support would be adequately met. In contrast, patients with an overall negative TKA experience had at least one major expectation or need for support not met during their TKA recovery, even in cases where they had good TKA outcomes. Suggested interventions to improve the experience of persons receiving TKA include an expanded patient navigator model, revised pre-surgery educational materials, particularly around pain expectations and management, and comprehensive sharing of other patients' TKA experience.


Subject(s)
Arthroplasty, Replacement, Knee/psychology , Aged , Communication , Female , Humans , Male , Social Support
12.
J Clin Nurs ; 25(9-10): 1336-45, 2016 May.
Article in English | MEDLINE | ID: mdl-26990238

ABSTRACT

AIMS AND OBJECTIVES: The purpose of this research was to critically examine the factors that contribute to turnover of experienced nurses' including their decision to leave practice settings and seek alternate nursing employment. In this study, we explore experienced nurses' decision-making processes and examine the personal and environmental factors that influenced their decision to leave. BACKGROUND: Nursing turnover remains a pressing problem for healthcare delivery. Turnover contributes to increased recruitment and orientation cost, reduced quality patient care and the loss of mentorship for new nurses. DESIGN: A qualitative, interpretive descriptive approach was used to guide the study. METHODS: Interviews were conducted with 12 registered nurses, averaging 16 years in practice. Participants were equally represented from an array of acute care inpatient settings. The sample drew on perspectives from point-of-care nurses and nurses in leadership roles, primarily charge nurses and clinical nurse educators. RESULTS: Nurses' decisions to leave practice were influenced by several interrelated work environment and personal factors: higher patient acuity, increased workload demands, ineffective working relationships among nurses and with physicians, gaps in leadership support and negative impacts on nurses' health and well-being. Ineffective working relationships with other nurses and lack of leadership support led nurses to feel dissatisfied and ill equipped to perform their job. The impact of high stress was evident on the health and emotional well-being of nurses. CONCLUSIONS: It is vital that healthcare organisations learn to minimise turnover and retain the wealth of experienced nurses in acute care settings to maintain quality patient care and contain costs. RELEVANCE TO CLINICAL PRACTICE: This study highlights the need for healthcare leaders to re-examine how they promote collaborative practice, enhance supportive leadership behaviours, and reduce nurses' workplace stressors to retain the skills and knowledge of experienced nurses at the point-of-care.


Subject(s)
Attitude of Health Personnel , Nursing Staff, Hospital/psychology , Personnel Turnover , Workload , Adult , British Columbia , Female , Humans , Interviews as Topic , Middle Aged
13.
Patient Prefer Adherence ; 9: 1637-45, 2015.
Article in English | MEDLINE | ID: mdl-26604713

ABSTRACT

PURPOSE: To describe older adults' perspectives on a new patient education manual for the recovery process after hip fracture. MATERIALS AND METHODS: The Fracture Recovery for Seniors at Home (FReSH) Start manual is an evidence-based manual for older adults with fall-related hip fracture. The manual aims to support the transition from hospital to home by facilitating self-management of the recovery process. We enrolled 31 community-dwelling older adults with previous fall-related hip fracture and one family member. We collected data using a telephone-based questionnaire with eight five-point Likert items and four semi-structured open-ended questions to explore participants' perceptions on the structure, content, and illustration of the manual. The questionnaire also asked participants to rate the overall utility (out of 10 points) and length of the manual. We used content analysis to describe main themes from responses to the open-ended interview questions. RESULTS: Participants' ratings for structure, content, and illustrations ranged from 4 to 5 (agree to highly agree), and the median usefulness rating was 9 (10th percentile: 7, 90th percentile: 10). Main themes from the content analysis included: ease of use and presentation; health literacy; illustration utility; health care team delivery; general impression, information support from hospital to home; emotional and decision-making support; and the novelty of the manual. CONCLUSION: The FReSH Start manual was perceived as comprehensive in content and acceptable for use with older adults post-fall-related hip fracture. Participants expressed a need for delivery and explanation of the manual by a health care team member.

14.
J Am Anim Hosp Assoc ; 50(1): 67-70, 2014.
Article in English | MEDLINE | ID: mdl-24216493

ABSTRACT

An 8 yr old castrated male Labrador retriever mixed-breed dog with osteosarcoma (OSA) of the left proximal humerus receiving carboplatin presented 10 days after the third chemotherapy treatment with hematuria, stranguria, and pollakiuria. A presumptive diagnosis of hemorrhagic cystitis was made based on clinical signs, urinalysis, and cytologic analysis of a traumatic catheterization sample. Carboplatin was removed from the chemotherapy treatment plan and was substituted with doxorubicin. The dog was treated with meloxicam for pain, and the cystitis signs subsided over a period of 4 wk. Carboplatin is commonly used as adjuvant chemotherapy for dogs with OSA following amputation and is not known to cause hematuria in dogs, although there are reports of this occurring in humans. To the authors' knowledge, there are no reports in the veterinary literature of this toxicity.


Subject(s)
Antineoplastic Agents/adverse effects , Carboplatin/adverse effects , Cystitis/chemically induced , Dog Diseases/drug therapy , Animals , Antineoplastic Agents/administration & dosage , Bone Neoplasms/drug therapy , Bone Neoplasms/veterinary , Carboplatin/administration & dosage , Dog Diseases/diagnosis , Dog Diseases/pathology , Dogs , Hemorrhage/chemically induced , Humerus , Injections, Intravenous/veterinary , Male , Osteosarcoma/drug therapy , Osteosarcoma/veterinary
15.
Can Vet J ; 54(12): 1137-41, 2013 Dec.
Article in English | MEDLINE | ID: mdl-24293673

ABSTRACT

A 12-year-old gelding was diagnosed with recurrent lymphoma in multiple cutaneous sites. A highly invasive preputial mass caused urethral obstruction. The horse was treated with surgery and chemotherapy consisting of lomustine (CCNU) and prednisolone. The treatment was well-tolerated and effective. This is the first reported use of lomustine (CCNU) in a horse for the treatment of equine lymphoma.


Utilisation de lomustine (CCNU) dans un cas de lymphone cutané équin. Un hongre âgé de 12 ans a été diagnostiqué avec un lymphome récurrent sur plusieurs sites cutanés. Une masse préputiale hautement invasive causait une obstruction urétrale. Le cheval a été traité par chirurgie et chimiothérapie composée de lomustine (CCNU) et de prednisolone. Le traitement a été efficace et bien toléré. Il s'agit de la première utilisation signalée de la lomustine (CCNU) chez un cheval pour le traitement d'un lymphome équin.(Traduit par Isabelle Vallières).


Subject(s)
Antineoplastic Agents, Alkylating/therapeutic use , Horse Diseases/drug therapy , Lomustine/therapeutic use , Lymphoma/veterinary , Skin Neoplasms/veterinary , Animals , Antineoplastic Agents, Hormonal/therapeutic use , Drug Therapy, Combination , Foreskin/surgery , Horse Diseases/surgery , Horses , Lymphoma/drug therapy , Lymphoma/surgery , Male , Prednisolone/therapeutic use , Skin Neoplasms/drug therapy , Skin Neoplasms/surgery , Urethral Obstruction/etiology , Urethral Obstruction/surgery , Urethral Obstruction/veterinary
16.
Can Vet J ; 54(10): 974-8, 2013 Oct.
Article in English | MEDLINE | ID: mdl-24155419

ABSTRACT

A 12-year-old neutered male domestic shorthair cat presented for chronic, localized, swelling and crusting of the left upper lip, weight loss, sporadic vomiting, and focal alopecia between the scapulae was diagnosed with hyperthyroidism and regional eosinophilic lymphadenitis. Treatment with methimazole exacerbated an underlying hypersensitivity disorder leading to marked generalized lymphadenopathy that histologically mimicked lymphoma.


Hyperplasie lymphoïde cutanée imitant un lymphome cutané chez un chat hyperthyroïdien. Un chat commun domestique mâle stérilisé âgé de 12 ans qui a été présenté pour de l'enflure et un encroûtement chroniques et localisés sur la lèvre supérieure gauche, une perte de poids, des vomissements sporadiques et de l'alopécie focale entre les omoplates a été diagnostiqué avec de l'hyperthyroïdisme et une lymphadénite à éosinophiles régionale. Le traitement au méthimazole et peut-être une hypersensibilité sous-jacente ont induit une lymphadénopathie généralisée marquée qui imitait histologiquement le lymphome.(Traduit par Isabelle Vallières).


Subject(s)
Cat Diseases/chemically induced , Hyperthyroidism/veterinary , Lymphatic Diseases/veterinary , Animals , Cat Diseases/diagnosis , Cat Diseases/pathology , Cats , Hyperthyroidism/drug therapy , Lymphatic Diseases/chemically induced , Lymphatic Diseases/diagnosis , Lymphatic Diseases/pathology , Male , Methimazole/adverse effects , Methimazole/therapeutic use , Pruritus/chemically induced , Pruritus/pathology , Pruritus/veterinary
18.
Transl Oncol ; 6(2): 158-68, 2013 Apr.
Article in English | MEDLINE | ID: mdl-23544168

ABSTRACT

Hemangiosarcoma, a natural model of human angiosarcoma, is an aggressive vascular tumor diagnosed commonly in dogs. The documented expression of several receptor tyrosine kinases (RTKs) by these tumors makes them attractive targets for therapeutic intervention using tyrosine kinase inhibitors (TKIs). However, we possess limited knowledge of the effects of TKIs on hemangiosarcoma as well as other soft tissue sarcomas. We report here on the use of the TKIs imatinib and dasatinib in canine hemangiosarcoma and their effects on platelet-derived growth factor receptor ß (PDGFR-ß) and Src inhibition. Both TKIs reduced cell viability, but dasatinib was markedly more potent in this regard, mediating cytotoxic effects orders of magnitude greater than imatinib. Dasatinib also inhibited the phosphorylation of the shared PDGFR-ß target at a concentration approximately 1000 times less than that needed by imatinib and effectively blocked Src phosphorylation. Both inhibitors augmented the response to doxorubicin, suggesting that clinical responses likely will be improved using both drugs in combination; however, dasatinib was significantly (P < .05) more effective in this context. Despite the higher concentrations needed in cell-based assays, imatinib significantly inhibited tumor growth (P < .05) in a tumor xenograft model, highlighting that disruption of PDGFR-ß/PDGF signaling may be important in targeting the angiogenic nature of these tumors. Treatment of a dog with spontaneously occurring hemangiosarcoma established that clinically achievable doses of dasatinib may be realized in dogs and provides a means to investigate the effect of TKIs on soft tissue sarcomas in a large animal model.

20.
Can Vet J ; 51(1): 79-84, 2010 Jan.
Article in English | MEDLINE | ID: mdl-20357946

ABSTRACT

Polymerase chain reaction (PCR) assays for the immunoglobulin and T-cell receptor genes were utilized to determine phenotype and clonality from lymph node cytologic smears and peripheral blood lymphocytes from 10 dogs with lymphoma, before chemotherapy and during remission. Results were compared with those from 13 dogs with a cytologic diagnosis of lymph node hyperplasia. Clonality was identified in 7 of the lymphomas on the basis of either lymph node cytology or peripheral blood lymphocytes before treatment. No lymph node hyperplasia samples were clonal. In 6 of the dogs with lymphoma, clonality was demonstrated during clinical remission. Detection of PCR clonality during clinical remission is an effective means of identifying minimal residual disease in canine lymphoma and thus additional work is warranted to determine if molecular remission is prognostic or predictive for outcome in well-controlled and well-defined lymphoma subtypes.


Subject(s)
Clone Cells/pathology , DNA, Neoplasm/analysis , Dog Diseases/pathology , Lymph Nodes/cytology , Lymphoma/veterinary , Receptors, Antigen, T-Cell/genetics , Animals , Antineoplastic Agents/therapeutic use , Clone Cells/chemistry , DNA, Neoplasm/genetics , Dog Diseases/drug therapy , Dogs , Hyperplasia/pathology , Hyperplasia/veterinary , Lymph Nodes/chemistry , Lymph Nodes/pathology , Lymphoma/drug therapy , Lymphoma/pathology , Neoplasm, Residual/veterinary , Phenotype , Polymerase Chain Reaction/veterinary , Prognosis , Remission Induction
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