Postoperative myositis in a neonatal foal: a case report.

This research presents a case of a newborn horse (foal) who developed muscle inflammation (myositis) after undergoing surgery to treat abdominal fluid leakage into the bladder (uroperitoneum), and subsequently died. The foal was noted to have high urea levels, acidic blood, and abnormal levels of electrolytes pre-operatively.

Background

• The study was based on a case report of a newborn horse having azotemia (an excess level of nitrogen compounds in the blood), acidemia (an abnormal acidity of the blood), and electrolyte imbalances.
• The horse was diagnosed with uroperitoneum, which is a medical condition characterized by the presence of urine in the peritoneal cavity.

Procedure

• The horse was put under anesthesia using isoflurane, a commonly used inhalational anesthetic in veterinary medicine, known for its rapid onset and recovery times.
• The anesthesia and subsequent abdominal surgery lasted for approximately 4 hours. The animal’s mean arterial blood pressure was monitored throughout the procedure, ranging between 45 and 65 mmHg. This is significant as maintenance of an appropriate blood pressure is crucial for adequate blood flow to the tissues and organs.

Postoperative complications

• Following the operation, the foal developed postoperative myositis. Myositis is a condition involving inflammation of the muscles. It can be caused by a number of factors, one of which is prolonged immobility under anesthesia, which could have led to pressure-induced injury to the muscles.

Outcome

• Despite the surgical intervention and attempts at treatment, the patient unfortunately died 24 hours post the surgery.

Implications

• This case report highlights the potential risks and complications of surgical interventions in neonatal horses. Appropriate peri-operative management, careful monitoring during anesthesia, and understanding of the complications, such as myositis, are essential for improving the odds of survival in such patients.