首页 | 本学科首页   官方微博 | 高级检索  
相似文献
 共查询到20条相似文献，搜索用时 31 毫秒
1.
A 6-month-old, spayed female, mixed breed dog was referred for respiratory difficulty. Radiographic and bronchoscopic evaluations showed tracheal narrowing from the thoracic inlet to its bifurcation. Under anesthesia, the trachea ruptured and the dog died. Microscopic evaluation revealed underlying segmental tracheal and bronchial cartilaginous malformation (dysplasia).  相似文献   

2.
Tracheal resection and anastomosis for congenital stenosis in a dog   总被引：1，自引：0，他引：1  
A one-year-old Cocker Spaniel dog was presented for the investigation of exercise-related stridor and respiratory embarrassment evident since birth. Radiography demonstrated a segmental tracheal stenosis at the thoracic inlet which was found to result from the congenital absence of tracheal rings at this point. The stenotic segment was resected at surgery and an end-to-end tracheal anastomosis performed. The dog now enjoys normal respiratory and exercise function with minimal narrowing of the trachea at the site of the anastomosis.  相似文献   

3.
Thoracic radiographs and clinical records from 14 dogs with confirmed anticoagulant rodenticide toxicity were reviewed. Twelve of the 14 dogs were presented with a chief complaint of respiratory distress, and 12 had elevated prothrombin and activated partial thromboplastin times consistent with a coagulopathy secondary to a clotting factor deficiency. Thoracic radiographs of the 14 dogs were reviewed and abnomalities included increased mediastinal soft tissue opacity with extra and intrathoracic tracheal narrowing (4/14), increased mediastinal soft tissue opacity without tracheal narrowing (8/14), variable degrees of pleural effusion (13/14) and generalized, patchy interstitial/alveolar pulmonary infiltrates (8/14). Radiographic evidence of cardiomegaly and pulmonary artery abnormalities consistent with concurrent heartworm infestation were detected in one dog. In four dogs, dramatic tracheal narrowing was identified on the lateral thoracic radiograph caused by either mediastinal hemorrhage compressing the trachea or submucosal hemorrhage within the tracheal lumen. The trachea was displaced in a ventral direction in two dogs, and extra and intrathoracic luminal diameter narrowing was evident cranially in all four dogs. Two of these four dogs had soft tissue opacity within the dorsal trachea that extended from the larynx to the intrathoracic trachea. Twelve of the 14 dogs survived with standard treatment protocols utilizing injectable and oral vitamin K1. One dog died from pancreatitis and disseminated intravascular coagulopathy. The other dog died soon after presentation due to severe, disseminated hemorrhage. Follow-up thoracic radiographs were made in four dogs that survived and showed resolution of the mediastinal, pleural and pulmonary changes within one to five days after the initiation of vitamin K1 therapy.  相似文献   

4.
A FOUR-year-old spayed miniature poodle was presented for evaluation because of a chronic cough which had been present from eight weeks of age. The condition had gradually worsened until exercise intolerance, inappetence and abdominal breathing occurred. The dog was thin and weighed only 1.5 kg. Auscultation revealed tachycardia, a normal respiratory rate and wheezing noises - more prominent on inspiration and localised to the cervical portion of the trachea. There was marked inspiratory and expiratory effort. Tracheal sensitivity was moderate and palpation induced a dry hacking cough. Radiography demonstrated mild thickening of the bronchial wall and pulmonary hyperinflation. Expiratory/inspiratory radiographs failed to demonstrate dynamic tracheal collapse. On fluroscopy, substantial changes in tracheal calibre were not apparent. Bronchoscopy was performed and the tracheal lumen was normal up to 12.5 cm from the incisors. At this point, there was lateral tracheal collapse to about 30 per cent. There was dynamic collapse with respiratory effort. The bronchoscope could be passed beyond the narrowing (consisting of five tracheal rings) to a trachea of normal size. No pathogens were found on tracheal lavage. Surgery was undertaken through a midline, ventral approach. Six specially made tracheal ring prostheses were individually inserted around the trachea and inside the recurrent laryngeal nerve. Each prosthesis was sutured in four places to the tracheal ring, to give external support. The dog improved clinically and 11 months after surgery, bronchoscopy was again performed. The trachea was narrowed to approximately 60 per cent but there was no dynamic collapse of the airway. Twenty-seven months after surgery the dog continued to lead a healthy active life.  相似文献   

5.
A 2-month-old intact female Rottweiler was presented for investigation of coughing and respiratory distress 9 d after an exploratory laparotomy for intestinal foreign body removal. Tracheal stenosis was suspected by radiography and confirmed with computed tomography (CT) and tracheoscopy. After 1 wk of medical management, clinical signs had resolved and the severity of the tracheal narrowing was markedly improved, as confirmed by radiography and tracheoscopy. Tracheal stenosis is a considerable complication of endotracheal intubation in veterinary medicine and may be medically managed, depending on the severity of the tracheal injury.Key clinical message:To our knowledge, this is the first clinical case report of tracheal stenosis resulting from endotracheal intubation in a dog and its resolution after medical management.  相似文献   

6.
Tracheal narrowing is described in two cats. In both cases, inspiratory radiographs demonstrated tracheal narrowing just cranial to the thoracic inlet; no narrowing was seen on expiratory radiographs. Magnetic resonance imaging revealed suspected nasal tumours in both cases, but no abnormalities were identified in the region of the narrowed trachea. Nasal biopsy confirmed intranasal lymphoma in one cat and nasal adenocarcinoma in the other. The former cat was treated with chemotherapy. The owner of the latter cat declined further treatment. The tracheal narrowing disappeared after the initiation of chemotherapy in the cat with intranasal lymphoma and it is suggested that the narrowing might have been associated with the nasal tumour. A careful evaluation of the airway, especially cranial to the narrowing, is recommended in cases of tracheal narrowing in cats.  相似文献   

7.
A 3 yr old intact female Hellenic shepherd dog was referred due to depression, partial anorexia, fever, and a mild productive cough of 2 mo duration. Thoracic radiographs showed increased opacity of all of the left lung lobes. Upon bronchoscopy, a sanguineous, purulent discharge was detected in the tracheal lumen with hyperplastic tissue narrowing the left main stem bronchus. Cultures were positive for bacteria (Bacillus spp. and Clostridium spp.) but negative for fungi. Due to the severity of the lesions, a complete left lung pneumonectomy was performed. Histopathological examination of the excised lung tissues revealed a severe granulomatous bronchopneumonia with numerous alveolar macrophages laden with structures stained positively by periodic acid-Schiff and Grocott stain that had morphology consistent with fungi. PCR and sequencing of internal transcribed spacer regions 1 and 2 from genetic material extracted from paraffin-embedded pulmonary tissue confirmed the presence of Aspergillus fumigatus. Itraconazole was administrated for 5.5 mo and the dog was clinically normal 26 mo after surgery.  相似文献   

8.
: Infection with Angiostrongylus vasorum was diagnosed at necropsy on a dog that died from acute pulmonary haemorrhage, and on recovery of L1 larvae by Baermann examination of faeces from two dogs, one of which had abdominal pain and retroperitoneal haemorrhage, while the other had right-sided heart failure due to cor pulmonale. The presenting signs included syncope (one dog), exercise intolerance (two dogs), cough (two dogs), abdominal pain (one dog) and depression (one dog). One-stage prothrombin time and activated partial thromboplastin time were prolonged in two dogs, buccal mucosal bleeding time was prolonged in one dog and globulin was elevated in all three dogs. Two dogs were treated with fenbendazole and recovered.  相似文献   

9.
An eight-year-old male Yorkshire terrier which had had a cough for two years was presented and a diagnosis of tracheal collapse was made after examination with a bronchoscope. It was decided to try to correct the tracheal defect by plication. Two weeks after the operation the dog was examined under general anaesthesia. Although traction had exposed a part of the thoracic trachea it was not sufficient in this case to achieve a complete repair. In view of a grave prognosis, the dog was destroyed.  相似文献   

10.
Medical records of 55 dogs with 1 or more vascular rings around the esophagus and trachea were reviewed to determine the nature and frequency of related vascular anomalies and to determine the reliability of tracheal deviation on radiographs for the diagnosis of persistent right aortic arch (PRAA). Fifty-two (95%) of the 55 dogs had PRAA. Of the 52 dogs with PRAA, 44% had coexisting compressive arterial anomalies: 17 had retroesophageal left subclavian artery and 6 had double aortic arch with atretic left arch. Characteristic tracheal deviation was consistently present in dogs with PRAA. Moderate or marked focal leftward curvature of the trachea near the cranial border of the heart in dorsoventral (DV) or ventrodorsal (VD) radiographs was found in 100% of available radiographs of 27 dogs with PRAA. Moderate or marked focal narrowing of the trachea also was noted in 74% of DV or VD radiographs and 29% of lateral radiographs of the dogs. Tracheal position in 30 of 30 dogs with megaesophagus and 62 of 63 control dogs was midline or rightward in VD or DV radiographs. Histology in a neonatal dog with PRAA revealed evidence of tracheal deviation and compression even before birth. Focal leftward deviation of the trachea near the cranial border of the heart in DV or VD radiographs is a reliable sign of PRAA in young dogs that regurgitate after eating solid food, and contrast esophagrams are not necessary to confirm the diagnosis of vascular ring compression.  相似文献   

11.
Haemoglobinuria and periumbilical discoloration (also known as Cullen's sign) are clinical signs uncommonly reported in veterinary patients. This report describes a case of retroperitoneal haemorrhage in a dog, associated with haemoglobinuria and Cullen's sign. To the authors' knowledge, these clinical signs have not previously been reported singularly or in combination with retroperitoneal haemorrhage in dogs. A neutered male Shetland sheepdog, which was presented for haematuria, also had an abdominal mass, abdominal pain and a large area of periumbilical discoloration. Laboratory studies determined that haemoglobinuria was the cause of the red-coloured urine. Abdominal radiographs suggested a splenic mass and a coeliotomy was performed. During the induction and throughout the anaesthetic period the dog was hypertensive and a large haematoma originating from the right retroperitoneal space was identified at surgery. The cause of the haemorrhage was uncertain but a ruptured phaeochromocytoma was thought possible on the basis of the persistent hypertension and the location of the haemorrhage.  相似文献   

12.
A 14-month-old female crossbreed dog with leishmaniasis, receiving allopurinol, was presented with acute paraplegia. A diagnosis of renal failure with pelvic limb lower motor neuron signs was made and the dog was euthanased. Histopathological examination demonstrated leukocytoclastic vasculitis in multiple organs. Malacia and haemorrhage affecting the spinal cord was associated with multiple foci of vasculitis within the nervous tissue. Rupture and thrombosis of inflamed vessels caused haemorrhage in the spinal cord and subsequent paralysis.  相似文献   

13.
An eight-year-old springer spaniel was presented with acute-onset subcutaneous emphysema of five days' duration. The dog had undergone ventral slot decompression of the C5-C6 intervertebral disc space eight weeks before presentation. Cervical tracheoscopy demonstrated perforation of the dorsal tracheal membrane of the distal cervical trachea. Perforation of the dorsal tracheal membrane secondary to suture knot irritation was confirmed by exploratory surgery. Repair of the perforation was performed by plication of the dorsal tracheal membrane. The dog was re-presented nine days after the initial surgery with acute recurrence of subcutaneous emphysema. Air leakage at the plicated dorsal tracheal membrane was observed at exploratory surgery, and a bipedicle sternothyroideus muscle flap was used to support the plicated membrane. Recovery was uneventful and 10 months postoperatively there had been no recurrence of clinical signs.  相似文献   

14.
A 5-year-old castrated male Pomeranian was evaluated because of severe dyspnea and coughing, and a diagnosis of complete, static collapse of the trachea at the thoracic inlet was made. After failure to improve with medical management alone, an endoluminal tracheal stent was placed, which resulted in resolution of signs. Ten weeks after stent placement, the dog underwent tracheal resection and anastomosis because the stent had fractured at the level of the thoracic inlet. One year after surgery, the dog was doing well and required treatment with hydrocodone infrequently. Compared with other surgical treatment options, placement of an endoluminal tracheal stent is a relatively noninvasive intervention that can provide effective relief from the clinical signs associated with tracheal collapse in dogs. Implantation of endoluminal tracheal stents may be associated with complications; therefore, the procedure may best be regarded as a salvage procedure for dogs with end-stage disease that are refractory to appropriate medical management, have extensive collapse of the intrathoracic portion of the trachea, or are poor candidates for surgery.  相似文献   

15.
A 3-year-old spayed female dog was admitted with a history of episodes of dyspnoea and coughing. Severe tracheal stenosis was found on radiography. The dog died during an episode of refractory dyspnoea. Necropsy revealed an obstruction of the thoracic part of the trachea because of a chronic granulomatous inflammation protruding into the tracheal lumen. Histological examination revealed nematodes, which were identified as Onchocerca sp. according to their morphological characteristics. In contrast to the common ocular manifestation in dogs, obstructive tracheitis caused by Onchocerca infection has not been reported before.  相似文献   

16.
A nine-and-a-half-year-old dog was referred for investigation of bradycardia after being hit by a car. Electrocardiography revealed a third degree atrioventricular (AV) block. The dog died during a syncopal attack. Post mortem examination revealed an atrial septal tear with haemorrhage and myocardial degeneration affecting the AV bundle.  相似文献   

17.
A 6‐year‐old neutered male, Golden retriever presented with regurgitation and excitement‐induced coughing. Two years prior, extra‐thoracic tracheal collapse was diagnosed and extra‐luminal tracheal ring prostheses were placed. Radiographs at presentation showed mineralized and undulant cervical tracheal cartilages. A dorsally broad‐based soft tissue opacity bulged into the caudal cervical tracheal lumen. Esophageal dysmotility and barium accumulation were identified at this level on contrast esophography. Computed tomography showed migration of a prosthetic tracheal ring, resulting in perforation of the esophagus. Hair, foreign material, and dynamic tracheal narrowing were identified on esophagoscopy and tracheoscopy, respectively. Esophagostomy and foreign body removal were performed.  相似文献   

18.
A four-year-old, entire male Rottweiler was presented with a history of respiratory distress. A tracheal mass was diagnosed on thoracic radiographs and tracheoscopy. Surgical excision of three tracheal rings incorporating the tumour was performed. The mass was found to be a low-grade fibrosarcoma. Twenty-four months later, the owner reported that there was no recurrence of respiratory distress and the dog appeared to be doing well clinically. This case of primary tracheal fibrosarcoma suggests that this type of tumour should be listed in the differential diagnoses for tracheal neoplasia in dogs and that surgical treatment alone may be curative.  相似文献   

19.
Pliable total ring prostheses were created from the polyvinyl chloride drip chambers of intravenous administration sets. The total ring prostheses were placed in one clinically normal research dog and in 4 client-owned dogs diagnosed with tracheal collapse. The research dog was euthanized one month after placement of the prostheses. Histopathological analysis of the trachea adjacent to the prostheses revealed a mild inflammatory response. The follow-up period for the clinical cases was from 4 months to 11 years. Radiographs taken and fluoroscopy performed 1 day to 5 months after surgery revealed improvement or resolution of the tracheal collapse. One dog was asymptomatic 28 weeks following surgery. Two dogs died 7 and 9 years after surgery, with one requiring intermittent medical management for coughing. They were euthanized for nonrespiratory illness. One dog had a persistent nonproductive cough, due to collapse of the mainstem bronchi, when last evaluated 4 months postoperatively. Pliable total ring prostheses provided adequate stability to the trachea and had the advantage of conforming to the trachea and being easy to create, place, and suture.  相似文献   

20.
A 20-month-old Quarter Horse stallion was admitted for evaluation of labored breathing, honking cough, and bilateral epistaxis that were caused by pneumonia and collapsed trachea. A transtracheal aspiration revealed highly cellular, serosanguineous fluid. Radiography revealed a patchy alveolar pattern and a narrowed tracheal lumen. Endoscopy confirmed narrowing of the tracheal lumen. Streptococcus zooepidemicus was isolated on culture of the transtracheal aspirate. The horse responded to penicillin treatment, and the tracheal collapse improved endoscopically after 4 days, with complete recovery within 1 year. Tracheal collapse has been reported to be a disease of older horses associated with degenerative cartilage. The findings in the horse of this report suggested that tracheal collapse may result from inflammation secondary to pneumonia and, therefore, may be reversible.  相似文献   

设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号