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[Navicular bone fractures in horses: Prognosis after conservative and surgical treatment]. [马蹄骨骨折:保守治疗和手术治疗后的预后]。
IF 0.7 4区 农林科学 Q3 VETERINARY SCIENCES Pub Date : 2024-06-01 DOI: 10.17236/sat00425
G Stucki, A E Fürst, M A Jackson

Introduction: The aim of this retrospective study is to describe and compare conservative and surgical treatment of navicular fractures in horses. An attempt is made to identify critical points that can favorably influence the prognosis of this orthopedic disease. All horses treated for a navicular fracture at the Equine Clinic, Vetsuisse Faculty, University of Zurich between 2005 and 2017 were included in this study. The severity of lameness at initial examination, radiographic assessment, hoof conformation, treatment (conservative or surgical), complications and outcome were determined from the medical records. Conservative and surgical treatment consisted of stable rest, a controlled exercise program and therapeutic orthopedic shoeing. During surgical treatment, fracture reduction was also carried out with a cortical screw. Computer assisted surgery were used in five horses and computer tomography in three horses. Follow-up examinations included clinical and radiographic examinations. The outcome was divided into three categories: 1 = very good; 2 = good; 3 = poor. Twelve horses met the inclusion criteria; Four horses were treated conservatively and eight were treated surgically. After conservative treatment, two horses (50 %) had a very good outcome and two (50 %) had a good outcome. After surgical treatment, four horses (50 %) had a very good outcome and four (50 %) had a poor outcome. Overall, 67 % of horses had a very good or good outcome, although radiographic signs of bone healing was not present in any of these cases. Various complications were identified, such as the fracture of a screw, the fragmentation of the small navicular bone fragment, the development of osteoarthrosis in the coffin joint and progressive podotrochosis. This study shows that the prognosis of navicular fractures is generally cautious and that degenerative changes to the navicular apparatus worsen the prognosis. In the present study, surgical treatment did not improve the prognosis of navicular fractures despite the intrasurgical use of three-dimensional imaging. However, technical advances could reduce the complication rate in the future.

简介这项回顾性研究旨在描述和比较马舟骨骨折的保守治疗和手术治疗。研究试图找出能对这种骨科疾病的预后产生有利影响的关键点。本研究纳入了2005年至2017年期间在苏黎世大学兽医学院马科诊所接受舟骨骨折治疗的所有马匹。根据医疗记录确定了初次检查时跛行的严重程度、放射学评估、马蹄外形、治疗(保守或手术)、并发症和结果。保守治疗和手术治疗包括稳定的休息、有控制的运动计划和治疗性矫形鞋。在手术治疗期间,还使用皮质螺钉进行骨折复位。五匹马采用了计算机辅助手术,三匹马采用了计算机断层扫描。随访检查包括临床和影像学检查。结果分为三类:1 = 非常好;2 = 好;3 = 差。12匹马符合纳入标准;4匹马接受了保守治疗,8匹马接受了手术治疗。保守治疗后,两匹马(50%)的疗效非常好,两匹马(50%)的疗效较好。手术治疗后,四匹马(50%)的疗效非常好,四匹马(50%)的疗效较差。总体而言,67%的马匹疗效很好或很好,但这些病例均未出现骨愈合的影像学迹象。研究还发现了各种并发症,如螺钉断裂、小舟骨碎片碎裂、蹄踝关节骨关节病和进行性荚膜软化症。这项研究表明,舟骨骨折的预后一般比较谨慎,舟骨器的退行性变化会使预后恶化。在本研究中,尽管手术中使用了三维成像技术,但手术治疗并未改善舟骨骨折的预后。不过,技术进步可降低未来的并发症发生率。
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引用次数: 0
[Factors influencing inflammatory diseases in the bitch and the survival of her offsprings]. [影响母犬炎症性疾病及其后代存活率的因素]。
IF 0.7 4区 农林科学 Q3 VETERINARY SCIENCES Pub Date : 2024-05-01 DOI: 10.17236/sat00423
M Walliser, E Furthner, D Brugger, I M Reichler, A Liesegang

Introduction: Feeding raw meat is becoming increasingly common among dog owners. This feeding practice can pose a hygienic risk and can lead to health risks for dogs and their owners. Hygienically sound food rations, that are balanced in terms of all nutrients and energy, must be feed to breeding dogs. The aim of this study was to record the influence of raw feeding on the occurrence of mastitis, metritis and the survival of puppies. An online questionnaire was sent to kennel club registered dog breeders in Germany and Switzerland. A total of 531 litters were recorded and evaluated. Mastitis and/or metritis were present in 9,2 % and 2,8 % (n = 49 and n = 15, respectively) of the breeding bitches. 29 % (n = 154) of the breeders reported loss of puppies in the litter. The most common cause were stillbirths (n = 105 litters with 187 stillborn puppies), and/or early mortality (n = 50 litters with 73 puppies that died in the first 48 hours). The occurrence of puppy losses in the litter and/or a higher proportion of puppy losses in the litter was favored by increased body weight of the bitch in larger dog breeds, existing previous illnesses, previously reported gestation or postpartum problems, increasing length of the parturition phase and/or a cesarean section. A higher total number of surviving puppies was associated with increased weight and anamnestic reported health of the bitch and the use of milk powder instead of other milk substitutes. A relationship between raw feeding and the occurrence of mastitis, metritis, the total number of surviving puppies and/or the occurrence or proportion of pup losses in the litter and was not found in this study. However very few breeders in this cohort fed their bitches raw, which in turn was due to the random selection of breeders. Many years of breeding experience and the increasing parity of the bitch had a clearly positive influence on the health of the bitch.

简介喂食生肉在狗主人中越来越普遍。这种喂养方式可能会带来卫生风险,并对狗及其主人的健康造成危害。饲养犬只的饲料必须卫生、营养和能量均衡。这项研究的目的是记录生食对乳腺炎、甲状腺炎的发生以及幼犬存活率的影响。研究人员向德国和瑞士的犬舍俱乐部注册饲养者发送了一份在线调查问卷。共记录和评估了 531 窝幼犬。9.2%和 2.8%(分别为 49 和 15)的种母狗患有乳腺炎和/或元气大伤。29 %(n = 154)的饲养者报告说,窝中有幼犬死亡。最常见的原因是死胎(n = 105 窝,187 只死胎幼犬)和/或早期死亡(n = 50 窝,73 只幼犬在最初 48 小时内死亡)。在大型犬种中,母犬体重增加、曾患过疾病、曾报告过妊娠或产后问题、分娩期延长和/或剖腹产,都会导致幼犬死亡和/或幼犬死亡比例升高。幼犬存活总数较高与母犬体重增加、产后报告健康状况良好以及使用奶粉而非其他代乳品有关。本研究未发现生喂与乳腺炎、甲状腺炎的发生、幼犬存活总数和/或幼犬损失的发生或比例之间的关系。不过,本组中很少有饲养者生喂母犬,这也是随机选择饲养者的结果。多年的饲养经验和母犬奇偶性的增加对母犬的健康有明显的积极影响。
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引用次数: 0
Bovine medicine: Whats´s your diagnosis? 牛医学:您的诊断是什么?
IF 0.8 4区 农林科学 Q3 VETERINARY SCIENCES Pub Date : 2024-05-01 DOI: 10.17236/sat00424
E Kolp, H K Junge, J A Schläpfer, C Gerspach, L Gamsjäger

Introduction: Two Angus calves housed in the Swiss Alps for two months were presented with brisket edema, jugular distension, and diarrhea. Hematological and biochemical examination included elevated concentration of erythrocytes and increased activity of liver enzymes. Ultrasonography revealed small amount of pleural effusion hepatomegaly and congested caudal vena cava. The diagnosis of congestive heart failure secondary to high-altitude disease was confirmed in pathology.

简介:两头在瑞士阿尔卑斯山饲养了两个月的安格斯小牛出现牛腩水肿、颈部膨胀和腹泻。血液和生化检查显示红细胞浓度升高,肝酶活性增加。超声波检查发现少量胸腔积液,肝脏肿大,尾腔静脉充血。病理确诊为继发于高海拔疾病的充血性心力衰竭。
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引用次数: 0
[Five case reports on granulosa cell tumors in cattle with practical information on diagnosis and possible progression]. [关于牛颗粒细胞瘤的五份病例报告以及诊断和可能发展的实用信息]。
IF 0.7 4区 农林科学 Q3 VETERINARY SCIENCES Pub Date : 2024-03-01 DOI: doi.org/10.17236/sat00420
E Studer, D Zoller, S Huber, J Ruf-Ritz, C Gurtner, P Grest, G Hirsbrunner

Introduction: Five cases of ovarian tumors (granulosa cell tumors) in cattle are presented from the patient load of the Vetsuisse University of Zurich and Bern. The aim of this work was to demonstrate the variable development of the illness and to indicate diagnostic and therapeutic possibilities to the practicing veterinarians. Case 1 shows bilateral appearance and the development of malignancy and metastases. The main symptoms in case 2 were the development of the mammary gland in a juvenile animal and the behavior modification due to a hormonal imbalance. The cases 3, 4 and 5 underwent surgery, case 4 restarted reproductive activity resulting in five subsequent pregnancies. The initial presumption is a result of a gynecological including ultrasonographic examination and can be verified by the analysis of Müllerian Inhibiting Hormone in serum. The decision to perform surgery should be done rapidly, as normal fertility can be achieved if the tumor is located unilaterally. Tumor growth and potential malignancy can provoke fatal health issues and also make it impossible to use meat of these animals for consumption.

导言:本文介绍了苏黎世和伯尔尼兽医大学的五例牛卵巢肿瘤(颗粒细胞瘤)病例。这项工作的目的是展示疾病的不同发展情况,并为执业兽医提供诊断和治疗的可能性。病例 1 显示了双侧外观以及恶性肿瘤和转移的发展。病例 2 的主要症状是幼年动物乳腺发育,以及由于荷尔蒙失调导致的行为改变。病例 3、4 和 5 接受了手术治疗,病例 4 重新开始了生殖活动,随后怀孕 5 次。最初的推断是妇科检查(包括超声波检查)的结果,并可通过分析血清中的缪勒氏抑制激素得到验证。应迅速决定是否进行手术,因为如果肿瘤位于单侧,则可以实现正常生育。肿瘤的生长和潜在的恶性肿瘤可能会引发致命的健康问题,也会使这些动物的肉无法用于食用。
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引用次数: 0
Shiga toxin-producing Escherichia coli isolated from hunted wild boar (Sus scrofa) in Switzerland. 从瑞士猎杀的野猪(Sus scrofa)中分离出产志贺毒素的大肠杆菌。
IF 0.7 4区 农林科学 Q3 VETERINARY SCIENCES Pub Date : 2024-03-01 DOI: doi.org/10.17236/sat00419
M Nüesch-Inderbinen, K Barmettler, M J A Stevens, N Cernela

Introduction: Shiga toxin-producing Escherichia (E.) coli (STEC) are zoonotic foodborne pathogens of significant public health importance. While ruminants are considered the main reservoir, wild animals are increasingly acknowledged as carriers and potential reservoirs of STEC. The aim of this study was to determine the occurrence of STEC in a total of 59 faecal samples of hunted wild boars (Sus scrofa) from two different regions in Switzerland (canton Thurgau in northern Switzerland and canton Ticino in southern Switzerland), and to characterise the isolates using a whole genome sequencing approach. After an enrichment step, Shiga-toxin encoding genes (stx) were detected by real-time PCR in 41 % (95 % confidence interval (95 %CI) 0,29 - 0,53) of the samples, and STEC were subsequently recovered from 22 % (95 %CI 0,13 - 0,34) of the same samples. Seven different serotypes and six different sequence types (STs) were found, with O146:H28 ST738 (n = 4) and O100:H20 ST2514 (n = 4) predominating. Subtyping of stx identified isolates with stx1c/stx2b (n = 1), stx2a (n = 1), stx2b (n = 6), and stx2e (n = 6). No isolate contained the eae gene, but all harboured additional virulence genes, most commonly astA (n = 10), hlyE (n = 9), and hra (n = 9). STEC O11:H5, O21:H21, and O146:H28 harboured virulence factors associated with extra-intestinal pathogenic E. coli (ExPEC), and STEC O100:H20 and O155:H26 possessed sta1 and/or stb and were STEC/enterotoxigenic E. coli (ETEC) hybrid pathotypes. Our results show that wild boars are carriers of STEC which may be distributed in the environment, possibly leading to the contamination of agricultural crops and water sources. The serogroups included STEC O146 which belongs to the most common non-O157 serogroups associated with human illness in Europe, with implications for public health. Since Stx2e-producing STEC have frequently been reported in swine and pork, STEC O100:H20 harbouring stx2e in faeces of wild boars may be relevant to free-range systems of pig farming because of the potential risk of transmission events at the wildlife-livestock interface.

导言:产志贺毒素大肠杆菌(STEC)是人畜共患的食源性病原体,对公共卫生具有重要意义。虽然反刍动物被认为是主要的贮藏库,但野生动物也越来越被认为是 STEC 的携带者和潜在贮藏库。本研究的目的是确定瑞士两个不同地区(瑞士北部的图尔高州和瑞士南部的提契诺州)共 59 份猎杀野猪(Sus scrofa)粪便样本中 STEC 的发生情况,并采用全基因组测序方法鉴定分离物的特征。经过富集步骤后,在 41% 的样本(95% 置信区间 (95 %CI) 0,29 - 0,53)中通过实时 PCR 检测到志贺毒素编码基因 (stx),随后在 22% 的相同样本(95% 置信区间 (95 %CI) 0,13 - 0,34)中检测到 STEC。发现了 7 种不同的血清型和 6 种不同的序列类型 (ST),其中以 O146:H28 ST738(n = 4)和 O100:H20 ST2514(n = 4)为主。stx亚型鉴定发现分离物含有stx1c/stx2b(n = 1)、stx2a(n = 1)、stx2b(n = 6)和stx2e(n = 6)。没有分离物含有 eae 基因,但所有分离物都含有其他毒力基因,最常见的是 astA(n = 10)、hlyE(n = 9)和 hra(n = 9)。STEC O11:H5、O21:H21 和 O146:H28 含有与肠道外致病性大肠杆菌(ExPEC)相关的毒力因子,而 STEC O100:H20 和 O155:H26 含有 sta1 和/或 stb,属于 STEC/ 肠毒性大肠杆菌(ETEC)杂交病型。我们的研究结果表明,野猪是 STEC 的携带者,这些 STEC 可能会在环境中传播,从而导致农作物和水源受到污染。血清群包括 STEC O146,它属于欧洲最常见的与人类疾病相关的非 O157 血清群,对公共卫生有影响。由于猪和猪肉中经常出现产 STx2e 的 STEC,野猪粪便中携带 STx2e 的 STEC O100:H20 可能与散养系统的养猪业有关,因为在野生动物与家畜之间存在潜在的传播风险。
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引用次数: 0
Scapulohumeral subluxation and luxation in five alpacas. 五只羊驼的肩胛骨肱骨半脱位和脱位。
IF 0.7 4区 农林科学 Q3 VETERINARY SCIENCES Pub Date : 2024-02-01 DOI: 10.17236/sat00417
J Laschinger, B Vidoni, K Schieder, B Altenbrunner-Martinek, J Kofler

Introduction: The patient histories, findings from clinical examinations, diagnostic imaging techniques, the surgical procedures, complications, necropsy findings and the outcomes from five male or castrated male alpacas with scapulohumeral sub-/luxation are presented. These alpacas each had a history of severe forelimb lameness for one week (n: 1), four weeks (n: 2) and for two-to-three months (n: 2). Two of the five alpacas were euthanized due to severe osteoarthritic changes that developed during the two-to-three months of scapulohumeral luxation. Three alpacas were treated with open reduction and internal stabilisation by placing tension band sutures between one 4,5 mm cortical screw anchored in the scapular neck and two 4,5 mm cortical screws anchored in the greater humeral tubercle, all of them provided with washers. Post-surgery a carpal flexion sling was applied to avoid postoperative weight-bearing. An exercise programme was started after removal of the carpal sling and continued for 12 weeks. In one of the three alpacas an additional non-displaced fracture of the acromion occurred two weeks after surgery. In conclusion, all three treated alpacas had good-to-excellent long-term outcomes and are still alive 123, 15 and 12 months after surgical repair of the scapulohumeral sub-/luxation. As four weeks, or even up to three months elapsed in four of these five alpacas until a definitive diagnosis was made, more education should be provided to alpaca owners that severely lame animals should be presented to a veterinarian with adequate diagnostic possibilities and expertise as soon as possible in order not to compromise treatment success.

简介:本文介绍了五只患有肩胛骨半脱位/脱位的雄性或阉割雄性羊驼的病史、临床检查结果、影像诊断技术、手术过程、并发症、尸检结果和治疗效果。这些羊驼都有严重前肢跛行的病史,分别持续了一周(1 头)、四周(2 头)和两三个月(2 头)。5 头羊驼中有 2 头因肩胛骨肱骨外翻两三个月期间出现严重的骨关节炎病变而被安乐死。有三头羊驼接受了开刀复位和内固定治疗,将拉力带缝合在固定在肩胛颈部的一颗4.5毫米皮质螺钉和固定在肱骨大结节的两颗4.5毫米皮质螺钉之间,所有螺钉都带有垫圈。术后使用了腕关节屈曲吊带,以避免术后负重。拆除腕部吊带后,开始实施运动计划,并持续 12 周。三只羊驼中有一只在术后两周又发生了肩峰非移位性骨折。总之,所有三只接受治疗的羊驼都获得了良好到卓越的长期疗效,在手术修复肩胛骨半脱位/脱位后的 123 个月、15 个月和 12 个月仍存活。在这 5 头羊驼中,有 4 头羊驼在 4 周甚至长达 3 个月后才得到明确诊断,因此应向羊驼饲养者提供更多教育,让他们认识到严重跛足的动物应尽快送往有足够诊断能力和专业知识的兽医处,以免影响治疗的成功。
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引用次数: 0
[Food hygiene and safety - What is your diagnosis?] [食品卫生与安全 - 您的诊断是什么?]
IF 0.7 4区 农林科学 Q3 VETERINARY SCIENCES Pub Date : 2024-02-01 DOI: doi.org/10.17236/sat00418
R Stephan, A S Ramsauer, B Thür, A Schlatter, M Hilbe

Introduction: A healthy, 1,5 year old female wild boar (Sus scrofa) was shoot in a hunting district in Switzerland on June 22, 2023. The meat inspection revealed noticeable skin changes on all four distal extremities which were described histologically as multifocal epidermal hyperplasia and moderate orthokeratotic hyperkeratosis. The rest of the animal body, the organs and the lymph nodes were without any obvious lesions. The diagnosis of papilloma virus-associated exophytically growing papillomas was made. The venison was approved as fit for human consumption.

导言:2023 年 6 月 22 日,一头健康的 1.5 岁雌性野猪(Sus scrofa)在瑞士的一个狩猎区被射杀。肉检结果显示,四肢远端皮肤有明显变化,组织学描述为多灶性表皮增生和中度角化过度。动物身体的其他部位、器官和淋巴结没有任何明显病变。诊断结果为乳头状瘤病毒相关的外生乳头状瘤。鹿肉被批准适合人类食用。
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引用次数: 0
[Vibration as a risk of mastitis during milking]. [振动是挤奶过程中引发乳腺炎的风险之一]。
IF 0.7 4区 农林科学 Q3 VETERINARY SCIENCES Pub Date : 2024-01-01 DOI: doi.org/10.17236/sat00416
M Hässig, P Wyss, E Bilgery, H Fatzer, M Hausammann, M Schick

Introduction: Mastitis is one of the most important factor diseases in dairy cattle worldwide. Milking technique represents one of the factors involved in the development of mastitis. The purpose of this study was to investigate the influence of vibrations during milking on the rate of clinical and subclinical mastitis. For this purpose, milking measurements, tank milk analyses and survey forms (general farm data, assessment of milking work and milking hygiene, teat condition, feeding, farm problems, animal behavior) were assessed in 8 Swiss dairy farms. The results show a correlation between present vibrations at the output of the milk meter and increasing bulk milk somatic cell count. Further, a tendency was shown for vibrations at the input of the milk meter to influence bulk milk somatic cell count. Also, a tendency regarding vibrations at the outlet of the milk meter and acute phase protein milk amyloid A was evident. In conclusion, the results suggest that vibration during milking might have a negative effect on udder health. However, further research with a larger number of dairies is needed to make a more generally valid statement.

导言:乳腺炎是全球奶牛最重要的疾病之一。挤奶技术是导致乳腺炎发生的因素之一。本研究的目的是调查挤奶过程中的振动对临床和亚临床乳腺炎发病率的影响。为此,对瑞士 8 个奶牛场进行了挤奶测量、奶罐奶分析和调查表(一般牧场数据、挤奶工作和挤奶卫生评估、乳头状况、饲喂、牧场问题、动物行为)评估。结果显示,奶量计输出端的振动与牛奶体细胞数增加之间存在相关性。此外,奶量计输入端的振动也有影响牛奶体细胞数的趋势。此外,奶量计出口处的振动与急性期蛋白牛奶淀粉样蛋白 A 的关系也很明显。总之,研究结果表明,挤奶过程中的振动可能会对乳房健康产生负面影响。不过,还需要对更多的奶牛场进行进一步研究,才能得出更普遍有效的结论。
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引用次数: 0
[Vibration as a risk of mastitis during milking]. [振动是挤奶过程中引发乳腺炎的风险之一]。
IF 0.7 4区 农林科学 Q3 VETERINARY SCIENCES Pub Date : 2024-01-01 DOI: 10.17236/sat00416
M. Hässig, P. Wyss, E. Bilgery, H. Fatzer, M. Hausammann, M. Schick
INTRODUCTIONMastitis is one of the most important factor diseases in dairy cattle worldwide. Milking technique represents one of the factors involved in the development of mastitis. The purpose of this study was to investigate the influence of vibrations during milking on the rate of clinical and subclinical mastitis. For this purpose, milking measurements, tank milk analyses and survey forms (general farm data, assessment of milking work and milking hygiene, teat condition, feeding, farm problems, animal behavior) were assessed in 8 Swiss dairy farms. The results show a correlation between present vibrations at the output of the milk meter and increasing bulk milk somatic cell count. Further, a tendency was shown for vibrations at the input of the milk meter to influence bulk milk somatic cell count. Also, a tendency regarding vibrations at the outlet of the milk meter and acute phase protein milk amyloid A was evident. In conclusion, the results suggest that vibration during milking might have a negative effect on udder health. However, further research with a larger number of dairies is needed to make a more generally valid statement.
引言 乳腺炎是全世界奶牛最重要的疾病之一。挤奶技术是导致乳腺炎发生的因素之一。本研究的目的是调查挤奶过程中的振动对临床和亚临床乳腺炎发病率的影响。为此,对瑞士 8 个奶牛场进行了挤奶测量、奶罐奶分析和调查表(一般牧场数据、挤奶工作和挤奶卫生评估、乳头状况、饲喂、牧场问题、动物行为)评估。结果显示,奶量计输出端的振动与牛奶体细胞数增加之间存在相关性。此外,奶量计输入端的振动也有影响牛奶体细胞数的趋势。此外,奶量计出口处的振动与急性期蛋白牛奶淀粉样蛋白 A 的关系也很明显。总之,研究结果表明,挤奶过程中的振动可能会对乳房健康产生负面影响。不过,还需要对更多的奶牛场进行进一步研究,才能得出更普遍有效的结论。
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引用次数: 0
Reversal of arterial oxygen desaturation with the use of an oxygen concentrator during injectable anaesthesia in feral cats positioned in the Trendelenburg, dorsal or lateral surgical position. 野猫在 Trendelenburg、背侧或侧卧手术体位进行注射麻醉时使用氧气浓缩器逆转动脉血氧饱和度降低。
IF 0.7 4区 农林科学 Q3 VETERINARY SCIENCES Pub Date : 2024-01-01 DOI: doi.org/10.17236/sat00415
E Ranninger, D Corona, E Goldinger, P Hug, L Niemann, A Stefan, P R Torgerson, R Bettschart-Wolfensberger, B Steblaj

Introduction: This study observed the effects of oxygen supplementation, via an oxygen concentrator, on peripheral arterial blood oxygenation (SpO2) measured by pulse oximetry in anaesthetised cats undergoing spay in three different surgical positions. A total of 192 female feral cats were investigated for a large-scale trap-neuter-release program. Cats were anaesthetised with an intramuscular combination of butorphanol (0,4 mg / kg), ketamine (7-10 mg / kg) and medetomidine (0,03-0,05 mg / kg). Cats were randomly allocated to undergo spay in either Trendelenburg (TR) (70° downward head tilt), lateral (LR) or dorsal (DR) recumbency. Cats were breathing spontaneously either room air or 2 L/minute oxygen via a tight-fitting face mask. Pulse rate (in beats per minute), respiratory rate (in breaths per minute) and SpO2 (in percentage) were measured at baseline in left lateral recumbency and afterwards continuously after being positioned in allocated surgical position. At the end of surgery, cats were placed again in left recumbency, and all parameters were re-evaluated after five minutes. Overall, 33 % of cats showed severe arterial oxygen desaturation (SpO2 < 90 %) at baseline when breathing room air. When oxygen was supplemented during the procedure, arterial oxygen desaturation resolved in all cats. At the end of the procedure, 29 % of cats were hypoxaemic when oxygen was not supplemented, with an overall higher percentage of hypoxaemic cats in TR as compared to DR and LR recumbencies. All cats recovered well from surgery and were released within 24 hours post-anaesthesia. Arterial oxygen desaturation is frequent in cats anaesthetised with injectable anaesthesia for spay under field conditions. Oxygen supplementation administered via a tight-fitting mask resolved arterial oxygen desaturation in this feral cat population regardless of the surgical position and therefore oxygen supplementation is recommended in any case.

简介本研究观察了通过制氧机补充氧气对接受三种不同手术体位绝育的麻醉猫通过脉搏氧饱和度测量的外周动脉血氧饱和度(SpO2)的影响。一项大规模诱捕-绝育-放归计划共调查了 192 只雌性野猫。使用丁吗啡醇(0.4 毫克/千克)、氯胺酮(7-10 毫克/千克)和美托咪定(0.03-0.05 毫克/千克)的肌肉注射组合对猫进行麻醉。猫咪被随机分配到 Trendelenburg (TR)(头向下倾斜 70°)、侧卧 (LR) 或背卧 (DR) 状态下接受绝育手术。猫咪通过紧身面罩自主呼吸室内空气或每分钟 2 升的氧气。在左侧卧位时测量基线脉搏(以每分钟心跳次数为单位)、呼吸频率(以每分钟呼吸次数为单位)和 SpO2(以百分比为单位),之后在分配手术体位后连续测量。手术结束时,再次将猫置于左侧卧位,五分钟后重新评估所有参数。总体而言,33% 的猫在呼吸室内空气时会出现严重的动脉血氧饱和度降低(SpO2 < 90%)。在手术过程中补充氧气后,所有猫的动脉血氧饱和度降低。手术结束时,未补充氧气时有 29% 的猫出现低氧血症,与 DR 和 LR 仰卧位相比,TR 仰卧位的低氧血症猫比例更高。所有猫咪从手术中恢复良好,并在麻醉后 24 小时内出院。在野外条件下,使用注射麻醉进行绝育手术的猫经常会出现动脉血氧饱和度降低的情况。在这一野猫群体中,无论手术体位如何,通过紧身面罩补充氧气都能解决动脉血氧饱和度降低的问题,因此建议在任何情况下都要补充氧气。
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Schweizer Archiv fur Tierheilkunde
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