Cross-sectional survey of husbandry for pet guinea pigs (Cavia porcellus) in New Zealand.

AIMS: To describe basic husbandry (veterinary care, substrate and bedding, toys, frequency of cleaning) provided to guinea pigs (Cavia porcellus) by a sample of owners in New Zealand. METHODS: Respondents were invited to complete a survey disseminated through the social media channels of animal interest and advocacy groups (3 September 2020 to 3 November 2020). Respondents who agreed to participate were asked a range of questions regarding the provision of husbandry to their oldest pet guinea pig. Descriptive statistics are reported here relating to husbandry, length of ownership, provision of substrate, bedding and toys, frequency of cleaning and veterinary care. RESULTS: A total of 503 responses were received, of which 329 complete responses were analysed. Of these respondents, 208/329 (63.2%) had owned guinea pigs for more than 2 years. Most owners provided a cage with a wooden base as substrate (144/321, 44.9%), bedding (308/329; 93.6%) and toys (169/329; 51.1%). Half (176/329; 53.5%) of respondents reported taking their guinea pig to a veterinarian. Just over half of the owners surveyed cleaned water (165/329; 50.1%) and food (181/329; 55.0%) bowls daily, and a third picked up droppings (109/329; 33.1%) daily. CONCLUSIONS AND CLINICAL RELEVANCE: While owners provided an array of toys, and a range of bedding and substrate types to their guinea pigs, cages were cleaned out less frequently than recommended, and it was common for guinea pig cages to be cleaned out less frequently than recommended. Future research is required to provide robust and evidence-based links between husbandry and the welfare of pet guinea pigs.

Cross-sectional survey of housing for pet guinea pigs (Cavia porcellus) in New Zealand.

AIMS: To describe the size and type of housing used by owners for pet guinea pigs (Cavia porcellus) in New Zealand. METHODS: A survey was distributed via social media (3 September 2020 to 3 November 2020) to guinea pig interest groups and animal agencies in New Zealand. Participation was self-selected by respondents who were asked a range of questions regarding the housing and husbandry of their oldest guinea pig. Data regarding conspecifics, cage location and type, time spent out of the enclosure and size are reported here. Descriptive statistics were calculated and the associations between housing type and size were assessed. RESULTS: A sample of 330 owners provided details of housing for their guinea pig. Most respondents housed their guinea pigs in groups of two or more (283/330; 85.7%). The most frequently reported housing types were a hutch or cage with an attached run (155/330; 47.0%) and inside the house in their own area (90/330, 27.3%). The mean size of enclosures was 3.3 (SD 4.3; median 2.0; min 0.3: max 37.5) m2 and the mean area provided per guinea pig was 1.4 (SD 1.6; median 0.9; min 0.2; max 10) m2. Of the owners using enclosures, 59/284, (21.1%) provided less cage space than the minimum recommended by the Royal New Zealand Society for the Prevention of Cruelty to Animals (RNZSPCA; 1.0 m2 per pair of guinea pigs). Nearly two-thirds (89/318; 59.4%) of respondents provided their guinea pigs daily time in a different area to their main living area (pen, garden, house, deck or garage) on a daily basis. CONCLUSIONS AND CLINICAL RELEVANCE: While mean cage size reported by respondents was greater than that recommended for pet guinea pigs by the RNZSPCA and fell within the range recommended by animal welfare groups internationally, a notable proportion of guinea pigs were housed in cages smaller than the recommended size. Furthermore the majority of guinea pigs were not provided with time outside this cage. Further work to investigate the effect of housing size on welfare of pet guinea pigs is required.

Follicular lymphoma adjacent to foreign body granulomatous inflammation and fibrosis surrounding silicone breast prosthesis.

Silicone lymphadenopathy has been associated with fracture and/or erosive breakdown of silastic implants in joint replacements and is also known to occur with cosmetic and reconstructive breast implant surgery. In the orthopedic literature rare malignant lymphomas have been reported in association with silicone granulomas in lymph nodes; whether silicone is a causative agent remains controversial. We report a single case of a 56-year-old woman who had painful capsular contractures and a 2-cm palpable nodule medial to her silicone mammary implant. Histologically the mass comprised an extra nodal follicular mixed lymphoma with surrounding granulomatous response to polarizable foreign body material. Paraffin immunophenotyping, bcl-2 protein staining, and gene rearrangement analysis verified this diagnosis.

Cardiopulmonary arrest in the pregnant patient: a report of a successful resuscitation.

We report the case of a pregnant patient who suffered cardiac arrest and was initially unresponsive to resuscitative measures. Prompt emergent cesarean delivery of the infant was carried out, and both mother and infant were then successfully resuscitated. We believe that prompt cesarean delivery is the key to maternal and infant survival in such cases.

Arthroscopic treatment of postoperative knee fibroarthrosis.

Twenty-four patients with severely limited knee motion following open knee surgery were treated by percutaneous release of adhesions under arthroscopic control. The mean interval between the last open surgical procedure and our treatment was 2.75 years (range, 3 months-27 years). The mean follow-up interval was eight months (range, 1 month-4 1/2 years). The mean passive flexion was increased from 70 degrees preoperation to 115 degrees at final evaluation after all arthroscopic procedures, a 45 degrees mean increase in flexion. Morbidity was low, complications were infrequent and mild, and the duration of hospitalization was brief.