HIV and Respiratory system

A 50-year-old male was diagnosed with HIV. He was taking antiretroviral therapy with poor compliance. His CD4 count was 95/mm³. He presented with fever, cough, and chest pain. On examination, he has bronchial breathing on auscultation. Chest x-ray showed infiltrates. Which of the following is the most likely causative organism in this patient?

A 44-year-old male was diagnosed with HIV recently. He was admitted to the hospital with a dry cough and shortness of breath.  On examination, his pulse was 90/min regular, blood pressure was 130/70 mmHg, and oxygen saturation was 80% at room air. Chest auscultation showed scattered crepitations. Chest x-ray showed bilateral middle lobe ground glass infiltrates. His CD4 count was 130 cells/mm³. Which of the following is the most likely diagnosis?

A 50-year-old male has been diagnosed with HIV for the previous 5 years. He presented to the emergency department with a cough and shortness of breath. His blood pressure was 130/90 mmHg, and pulse was 70/min, with regular and occasional crepitations on chest auscultation.  His oxygen saturation was 90% at room air and dropped to 68% while walking. PaO2 was 60 mmHg on ABGs. What is the most appropriate treatment for this patient?

A 40-year-old male presented with a cough and hemoptysis for 1 month. He has lost 5 kg in the previous 1 month. The chest X-ray showed inhomogeneous opacity with a cavity in the right upper lobe. The sputum for AFB was +++. He was diagnosed with HIV 3 years ago and was compliant with medications. He was on tenofovir, emtricitabine and ritonavir. What is the most appropriate management for him?

A 32-year-old male with advanced HIV infection (CD4 count of 30 cells/mm³) is diagnosed with pulmonary tuberculosis (TB) after presenting with chronic cough, weight loss, night sweats, and fever. Sputum smear and culture are positive for Mycobacterium tuberculosis. He has started on standard anti-tuberculous therapy (ATT) consisting of isoniazid, rifampin, pyrazinamide, and ethambutol.

Two weeks later, antiretroviral therapy is initiated with tenofovir, emtricitabine, and dolutegravir. After four weeks of ART initiation, the patient presents with worsening cough, high-grade fever, dyspnea, and increased sputum production. Chest X-ray shows worsening infiltrates and new lymphadenopathy despite adherence to both ART and ATT. Laboratory tests show a rising CD4 count to 80 cells/mm³ and a significant decline in HIV viral load. What is the possible explanation?

A 23-year-old female schoolteacher presented with 3 days of high-grade fever (102⁰F), chills, and right-sided pleuritic chest pain. She reports a productive cough with white sputum but no upper respiratory symptoms. She was diagnosed with HIV 3 years ago and has been adherent to her ART regimen with her last CD4 count being 320/mm³ one month ago

On examination her pulse was 110/min, respiratory rate was 24/min. Oxygen saturation was 93% at room air and right basal crepitations on auscultation.

Investigations showed WBC

• 12,500 with neutrophilia
• Chest X-ray: right lower lobe consolidation
• Sputum Gram stain was pending

Which of the following organisms is most likely responsible for her symptoms?  

A 37-year-old taxi driver with a 2-month history of productive cough, worst in the mornings, occasionally blood-tinged. He reports night sweats and 5 kg weight loss over this period. He was diagnosed with HIV 1.5 years ago, but has poor ART adherence. His last known CD4 count (4 months ago) was 480/mm³ during hospitalization for alcohol withdrawal.

On examination, the temperature was 99.5⁰F, pulse rate was 90 bpm, and respiratory rate was 16/min. He was cachectic, with right apical crackles on auscultation, and injection marks on the arm were present

 Investigations showed right upper lobe infiltrates with cavitation, sputum AFB was pending, and gene expert MTB/RIF was ordered. Which of the following is the most likely diagnosis for this patient?