💡TL;DR: 70% SpO₂ is a medical emergency. Normal is 95–100% at sea level; anything below 80% is severe and can injure organs fast. At 70% you usually have minutes to a few hours without urgent treatment—call 911. Chronic lung disease does not make 70% “normal”; long‑term

💡TL;DR: Ipratropium bromide plus albuterol sulfate opens tight airways quickly for COPD and severe asthma flares. Most side effects are mild and short-lived (shaky hands, dry mouth, brief fast heartbeat), while serious symptoms are uncommon; seek care immediately for chest pain, swelling, or worse breathing right after a dose

💡TL;DR: Empyema = around the lung; lung abscess = inside the lung. Empyema usually needs drainage plus antibiotics; a lung abscess usually responds to antibiotics alone. CT is the best way to tell them apart; a classic study found CT correctly distinguished them in every case. Empyema carries higher short-term risk

💡TL;DR: Valley Fever can leave a small lung nodule (a scar) in about 5% of infections, and most are harmless and do not become cancer. In endemic areas, many nodules that look suspicious on scans prove to be Valley Fever scars; doctors balance watchful follow-up vs biopsy based on

💡TL;DR: Empyema is an infected pleural effusion (pus in the pleural space) that usually needs urgent drainage plus IV antibiotics, while a typical pleural effusion is extra fluid that is often not infected and is treated by fixing the cause and draining only if needed. Doctors look for loculations

💡TL;DR: A nebulizer can help COVID-related wheeze or chest tightness, especially if you have asthma or COPD, but it does not treat the virus. If you already have a prescription, keep using it as directed; if you do not, talk to your doctor before starting any nebulized medicine. Use

💡TL;DR: Effusion = fluid; pneumothorax = air that can collapse a lung. Effusions are common in the U.S. (≈1.5 million cases yearly), while spontaneous pneumothorax is less common but often sudden. Imaging separates them quickly (fluid layering vs a clear rim of air), and treatment differs: effusion is drained

💡TL;DR: Pulmonary edema is fluid inside the lung’s air sacs; pleural effusion is fluid around the lungs in the pleural space. Edema tends to be sudden and is an emergency, treated in the hospital with oxygen and diuretics; effusions often build gradually and can be drained while the

💡TL;DR: ALS weakens the breathing muscles, not the lungs, so early clues are orthopnea, morning headaches, daytime sleepiness, and a weaker cough. Starting noninvasive ventilation at night when tests and symptoms change can improve sleep and daytime energy and is linked to longer survival. Airway clearance tools (assisted cough,