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Provide a short flashcard topics of the above pdf

Reading File
The file is a .ppt (not .pptx), but I'll extract the text using markitdown first.
Running Command

python -m markitdown /home/daytona/workspace/attachments/c62b4de0-2568-45c7-9310-3f45d3b7e20a/int4_ph3_AntiTB_14June2026.ppt 2>&1 | head -300

Running Command

cd /home/daytona/workspace && python3 -c " import zipfile, os, re path = '/home/daytona/workspace/attachments/c62b4de0-2568-45c7-9310-3f45d3b7e20a/int4_ph3_AntiTB_14June2026.ppt' # Try python-pptx first try: from pptx import Presentation prs = Presentation(path) for i, slide in enumerate(prs.slides): print(f'--- Slide {i+1} ---') for shape in slide.shapes: if hasattr(shape, 'text') and shape.text.strip(): print(shape.text.strip()) except Exception as e: print('pptx error:', e) # Try libreoffice convert import subprocess result = subprocess.run(['libreoffice', '--headless', '--convert-to', 'pptx', '--outdir', '/tmp/', path], capture_output=True, text=True) print('libreoffice:', result.stdout, result.stderr) " 2>&1 | head -400

Running Command

python3 /home/daytona/skills/pptx/scripts/extract_text.py /tmp/int4_ph3_AntiTB_14June2026.pptx 2>&1 || python3 -c " import zipfile, xml.etree.ElementTree as ET path = '/tmp/int4_ph3_AntiTB_14June2026.pptx' ns = {'a': 'http://schemas.openxmlformats.org/drawingml/2006/main', 'p': 'http://schemas.openxmlformats.org/presentationml/2006/main', 'r': 'http://schemas.openxmlformats.org/officeDocument/2006/relationships'} with zipfile.ZipFile(path, 'r') as z: slides = sorted([f for f in z.namelist() if f.startswith('ppt/slides/slide') and f.endswith('.xml')]) for i, slide_path in enumerate(slides): with z.open(slide_path) as f: tree = ET.parse(f) root = tree.getroot() texts = [] for t in root.iter('{http://schemas.openxmlformats.org/drawingml/2006/main}t'): if t.text and t.text.strip(): texts.append(t.text.strip()) if texts: print(f'=== Slide {i+1} ===') print(' | '.join(texts)) " 2>&1 | head -500

I now have all the content. Here are the flashcard topics from the Anti-TB presentation:

Flashcard Topics: Antimycobacterial Drugs

1. Mycobacteria - Overview

Q: What are the key characteristics of mycobacteria? A: Rod-shaped, aerobic, acid-fast bacilli that multiply slowly. Their cell walls contain mycolic acids (long-chain β-hydroxylated fatty acids). Infections cause slow-growing granulomatous lesions. M. tuberculosis is the leading infectious cause of death worldwide; a quarter of the world's population is infected.

2. First-Line Anti-TB Drug Regimen

Q: What is the standard short-course TB treatment regimen? A: Intensive phase (2 months): Isoniazid + Rifampin + Ethambutol + Pyrazinamide (RIPE). Continuation phase (4 months): Isoniazid + Rifampin. Total = 6 months for drug-susceptible TB.

3. Isoniazid (INH) - Mechanism of Action

Q: How does Isoniazid work? A: Inhibits acyl carrier protein reductase (InhA) and β-ketoacyl-ACP synthase (KasA) - enzymes essential for mycolic acid synthesis - disrupting the bacterial cell wall.

4. Isoniazid - Pharmacokinetics

Q: What are the key PK features of Isoniazid? A: Orally absorbed (impaired by high-fat meals). Diffuses into all body fluids, cells, and caseous material. CSF levels = serum levels. Undergoes N-acetylation: Fast acetylators t½ ~90 min; Slow acetylators t½ 3-4 hrs. Excreted renally (no dose adjustment needed in renal failure).

5. Isoniazid - Adverse Effects

Q: What are the major adverse effects of Isoniazid? A:
  • Hepatitis (most serious; fatal if unrecognized) - risk increases with age >35, co-use of rifampin, daily alcohol
  • Peripheral neuropathy (pyridoxine/B6 deficiency) - prevented by daily pyridoxine supplementation
  • CNS effects (convulsions in seizure-prone patients)
  • Hypersensitivity (rash, fever)
  • Drug interaction: inhibits metabolism of carbamazepine and phenytoin

6. Rifampin - Mechanism of Action

Q: How does Rifampin work? A: Blocks RNA synthesis by binding the β subunit of mycobacterial DNA-dependent RNA polymerase.

7. Rifampin - Pharmacokinetics & Key Features

Q: What are the PK features of Rifampin? A: Orally absorbed, distributes to all body fluids/organs. Undergoes enterohepatic recycling. Eliminated primarily via bile into feces (small % in urine). No dose adjustment needed for renal or hepatic insufficiency. Classic finding: Orange-red discoloration of urine, feces, tears, secretions (warn patients; can stain soft contact lenses).

8. Rifampin - Adverse Effects & Drug Interactions

Q: What are the adverse effects and drug interactions of Rifampin? A: Adverse effects: nausea, vomiting, rash, thrombocytopenia, nephritis, hepatitis (rare). Intermittent/high-dose use causes flu-like syndrome (fever, chills, myalgia, +/- hemolytic anemia, renal failure, shock). Key interaction: Potent inducer of CYP450 enzymes and transporters - causes numerous drug interactions. Use with caution in elderly, alcoholics, and chronic liver disease patients.

9. Rifabutin vs. Rifapentine

Q: How do Rifabutin and Rifapentine differ from Rifampin? A:
  • Rifabutin: Preferred in TB-HIV co-infected patients on protease inhibitors or NNRTIs. Less potent CYP450 inducer (fewer drug interactions). Unique adverse effects: uveitis, skin hyperpigmentation, neutropenia.
  • Rifapentine: Longer half-life. Used once weekly (with isoniazid) for latent TB infection and in select HIV-negative patients with minimal pulmonary TB.

10. Pyrazinamide - Key Points

Q: What are the key features of Pyrazinamide? A: Active against TB bacilli in acidic lesions and macrophages. Orally effective; penetrates the CSF. Converted to pyrazinoic acid (active form). Adverse effects: liver toxicity, uric acid retention (rarely causes gout), photosensitivity. Usually discontinued after the first 2 months of the 6-month regimen (clinical benefit mainly in early treatment).

11. Ethambutol - Mechanism, PK & Adverse Effects

Q: What is the mechanism and key adverse effect of Ethambutol? A: Mechanism: Inhibits arabinosyl transferase - an enzyme critical for mycobacterial cell wall synthesis. Bacteriostatic and mycobacteria-specific. PK: distributes well; excreted in urine. Key adverse effect: Optic neuritis - reduced visual acuity and red-green color discrimination loss. Risk increases with higher doses and renal impairment. Baseline and periodic visual acuity/color discrimination testing required. Also decreases uric acid excretion (caution in gout).

12. Second-Line Anti-TB Drugs

Q: What are the second-line anti-TB agents? A:
  • Aminoglycosides: Streptomycin, Kanamycin, Amikacin
  • Capreomycin (peptide antibiotic - protein synthesis inhibitor)
  • Cycloserine (d-alanine analog - inhibits cell wall synthesis)
  • Aminosalicylic acid (PAS) - folate synthesis antagonist (similar to sulfonamides)
  • Fluoroquinolones (e.g., Levofloxacin, Moxifloxacin)
  • Linezolid (oxazolidinone)
  • Bedaquiline (ATP synthase inhibitor)

13. Bedaquiline - Key Points

Q: What is Bedaquiline used for and what are its adverse effects? A: Approved for MDR-TB. Mechanism: ATP synthase inhibitor. Oral administration; active against many mycobacteria types. Adverse effects: QT prolongation (ECG monitoring required), elevated liver enzymes (monitor LFTs). Metabolized via CYP3A4 - avoid co-administration with strong CYP3A4 inducers like rifampin.

14. MDR-TB and XDR-TB Treatment

Q: How is MDR-TB and XDR-TB treated? A:
  • MDR-TB (resistant to at least INH + Rifampin): Injectable aminoglycoside (streptomycin/kanamycin/amikacin) or capreomycin + a fluoroquinolone (levofloxacin/moxifloxacin) + any remaining active first-line drugs + cycloserine, ethionamide, or PAS. Lasts ~2 years.
  • XDR-TB: Empiric use of clofazimine and linezolid.
These 14 flashcards cover every major topic in the presentation - drug mechanisms, pharmacokinetics, adverse effects, drug interactions, TB biology, and treatment regimens. Let me know if you'd like these formatted as printable cards or exported to a file!
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