A 25-year-old patient had pharyngitis 2 weeks ago. Now he complains about body temperature rise up to 38°C', general weakness, dyspnea during walking, swelling and shifting pain in the articulations. Objectively: cyanosis of lips, rhythmic pulse of poor volume -100 bpm. Left cardiac border deviates outwards from the mediaclavicular line by 1 cm. The first heart sound is weakened on the apex, auscultation revealed systolic souffle. What is the most probable aeti-ological factor that caused this pathological process?

Answer options

1. Pneumococcus
2. Virus
3. Staphylococcus
4. β-haemolytic streptococcus
5. Fungi

Explanation

A 25 year old patient had pharyngitis 2 weeks ago. Now he complains about body temperature rise up to 38oC, general weakness, dyspnea during walking, swelling and shifting pain in the articulations. Objectively: cyanosis of lips, rhythmic pulse of poor volume - 100 bpm. Left cardiac border deviates outwards from the medial clavicular line by 1 cm. The first heart sound is weakened on the apex, auscultation revealed systolic souffle. What is the most probableaetiological factor that caused this pathological process?