Laparoscopy Assisted Diagnostic Protocols for Surgical conditions of Thoracic Cavity in Dogs
Loading...
Files
Date
2019
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
MAFSU, Nagpur
Abstract
The clinical study entitled “Laparoscopy assisted diagnostic protocols for surgical conditions of thoracic cavity in dogs” was undertaken on Twelve clinical cases with objective to evaluate the use of thoracoscopy in diagnosis of different thoracic lesions and treatment of thoracic disorders in dogs, to evaluate the effect of anaesthesia and positive pressure ventilation during thoracoscopy in dog and to study the effect of thoracoscopy and anaesthesia on haematobiochemical parameters in dogs affected with various thoracic disorders.
The cases referred for the detailed investigations and treatment through thoracoscopy were divided in two groups consisting of 6 cases in each group i.e. group I and II. In both the groups dogs were premedicated with acepromazine (0.04 mg/kg) BW intravenously and administration of atropine sulphate (0.04 mg/kg) BW SC and dexamethasone sodium (0.025 mg/kg) BW SC 10 minutes before induction of anaesthesia. Animals were induced with propofol (5 mg/kg) BW intravenously. In group I and II anaesthesia was maintained with isoflurane 2.5% and sevoflurane 2.5%. respectively. All the animals were maintained on volume controlled intermittent positive pressure ventilator. Intermittent positive pressure ventilation was delivered with tidal volume of 7–8 ml/kg body weight, 15-16 breaths per minute and inspiratory: expiratory (I:E) ratio of 1:2.
In group I, laparoscopy assisted diagnostic procedure was carried out for the diagnosis of lung parenchyma diseases by lung biopsy. In group II, diagnosis of pleural diseases with pleural biopsy in dogs was carried out. Various surgical, anaesthesiological and haematobiochemical parameters were studied to compare Group I and II. It was noticed that laparoscopy assisted examination of intrathoracic organs was well defined and illustration of organs was very superior to the other modalities like radiography and ultrasonography. Most important findings of subxiphoid thoracoscopy were, it allows bilateral examination of thoracic cavity with bilateral lung ventilation, lack of lung exclusion and pulmonary movement does not cause any major disturbance while examination. It allowed ample exploration of thoracic cavity in both the hemithorax.
Bilateral lung ventilation with reduced tidal volume allowed biopsy of lung with vessel sealing device and prettied loop ligature. The tissue size of biopsy retrieved was sufficient for histopathological examination
Biopsy sample collected by using laparoscopic cup biopsy forcep was adequate for the histological examination. Technique was found safe and fast and well tolerated by all the patients.
The combinations of acepromazine-propofol-isoflurane and acepromazinepropofol-sevoflurane anaesthesia were found suitable for thoracoscopic procedure and can be used safely to maintain anaesthesia in thoracoscopic examination and biopsy on intrathoracic organs. In the present study in both the groups, there was non-significant decrease in rectal body temperature up to 30 minutes, however, rectal body temperature decreased significantly at 60minute interval and values returned to normal physiological values after 48 hours. Non-significant difference was observed in heart and pulse rate.
Non significant changes were recorded in the haematobiochemical parameters. Similarly, the non significant changes were observed in the serum cortisol, Arterial blood pH value, Arterial pressure of carbon dioxide PaCO2, Arterial partial pressure of oxygen PaO2, and Arterial bicarbonate concentration HCO3.
Description
Keywords
null