Case Presentation: A 50-year-old male with one-week history of upper respiratory tract infection symptoms, including cough, low-grade fever, and malaise, presented to the emergency department with altered mental status, febrile at 102.7°F, and acute hypoxic respiratory failure requiring intubation. Initial CT chest notable for dense left lower lobe consolidation with associated loculated pleural effusion. Blood cultures and urine antigen testing were both positive for Streptococcus pneumoniae. MRI brain done for seizure work-up showed acute right frontal and left cerebellum lacunar infarcts and concern for meningitis. Subsequently, lumbar puncture was positive for S. pneumoniae meningitis. A transesophageal echocardiogram was done revealing vegetations on the aortic valve associated with severe regurgitation, confirming the diagnosis of infective endocarditis. The patient was started on broad-spectrum antibiotics, later narrowed to high-dose ceftriaxone based on sensitivities. Hospital course was further complicated by worsening heart failure secondary to severe aortic regurgitation. Cardiothoracic surgery was consulted and once medically optimized, the patient underwent successful aortic valve replacement and tricuspid valve repair. Postoperatively, the patient’s respiratory and neurological status gradually improved. He completed a six-week course of intravenous antibiotics and was discharged to a rehabilitation facility with plans for close outpatient follow-up.
Discussion: Austrian syndrome is a rare and severe infection caused S. pneumoniae with simultaneous presence of pneumonia, meningitis, and infective endocarditis. The triad is essential for diagnosis; each component must be confirmed clinically and/or microbiologically with S. pneumoniae identified as the causative organism. This condition is most commonly seen in immunocompromised individuals; however, the patient in this case had no pertinent past medical history. Diagnosis of Austrian syndrome is challenging and requires a high index of suspicion, as it often presents with non-specific symptoms, such as fever, altered mental status, and respiratory failure. Treatment of Austrian syndrome is multidisciplinary, typically involving infectious disease, cardiology, and neurology. Furthermore, in cases of severe valvular damage, involvement of cardiothoracic surgery may be required. Timely surgical intervention is crucial for preventing further deterioration of cardiac function, reducing the risk of heart failure, and improving overall survival. The rarity of Austrian syndrome, combined with the need for early recognition and aggressive treatment, makes its management particularly challenging but essential for a positive outcome.
Conclusions: Austrian syndrome should be considered in patients presenting with evidence of pneumococcal pneumonia and neurological symptoms, especially when endocarditis is suspected. Early recognition, prompt initiation of appropriate antibiotics, and timely surgical intervention for valvular complications are essential for optimal outcomes. Multidisciplinary management is crucial for survival in these complex cases.