The benefit of the ICU for older patients is often debated. There is little knowledge on subjective impressions of excessive care in ICU nurses and physicians combined with objective patient data in real-life cases.

Glycemic variability is associated with increased risk for cardiovascular disease in patients with type 2 diabetes independent of glycosylated hemoglobin A1c (HbA1c) levels. Given the conflicting evidence on the effect of positive airway pressure (PAP) therapy for OSA on HbA1c, elucidating its effect on glycemic variability has value.

Right ventricular dysfunction in pulmonary hypertension (PH) contributes to reduced exercise capacity, morbidity, and mortality. Exercise can unmask right ventricular dysfunction not apparent at rest, with negative implications for prognosis.

Lifestyle is an important contributor of age-related chronic disease, but the association between lifestyle and the risk of idiopathic pulmonary fibrosis (IPF) remains unknown. The extent to which genetic susceptibility modifies the effects of lifestyle on IPF also remains unclear.

Postacute sequelae of SARS-CoV-2 (PASC) is a long-term consequence of acute infection from COVID-19. Clinical overlap between PASC and myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS) has been observed, with shared symptoms including intractable fatigue, postexertional malaise, and orthostatic intolerance. The mechanistic underpinnings of such symptoms are poorly understood.

Climate change adversely impacts global health. Increasingly, temperature variability, inclement weather, declining air quality, and growing food and clean water supply insecurities threaten human health. Earth's temperature is projected to increase up to 6.4 °C by the end of the 21st century, exacerbating the threat. Public and health care professionals, including pulmonologists, perceive the detrimental effects of climate change and air pollution and support efforts to mitigate its effects. In fact, evidence is strong that premature cardiopulmonary death is associated with air pollution exposure via inhalation through the respiratory system, which functions as a portal of entry. However, little guidance is available for pulmonologists in recognizing the effects of climate change and air pollution on the diverse range of pulmonary disorders. To educate and mitigate risk for patients competently, pulmonologists must be armed with evidence-based findings of the impact of climate change and air pollution on specific pulmonary diseases. Our goal is to provide pulmonologists with the background and tools to improve patients' health and to prevent adverse outcomes despite climate change-imposed threats. In this review, we detail current evidence of climate change and air pollution impact on a diverse range of pulmonary disorders. Knowledge enables a proactive and individualized approach toward prevention strategies for patients, rather than merely treating ailments reactively.

Lung transplantation (LTx) is the definitive treatment for end-stage lung failure. However, there have been no large, long-term studies on the impact of acute in-hospital stroke in this population.

The acute cardiovascular and pulmonary effects of contemporary electronic nicotine delivery systems (ENDS) in long-term users are not known.

Evidence regarding acute kidney injury associated with concomitant administration of vancomycin and piperacillin-tazobactam is conflicting, particularly in patients in the ICU.

A 35-year-old man was hospitalized with fever, chest pain, and cough of 2 weeks' duration. These symptoms persisted despite 4 days of antibiotic treatment with IV ceftriaxone sodium 2 g/d. The patient was a nonsmoker with an unremarkable medical history who worked as a herdsman and lived in the Shigate region of Tibet, China.

A 21-year-old Hispanic woman with no significant medical history presented with complaints of progressive skin lesions for 3 months, associated with dyspnea and scant hemoptysis for 1 week. She initially developed painless subcutaneous nodules on her right forearm, which progressed to superficial ulcers and gradually spread to involve bilateral arms, thighs, chest, abdomen, and gluteal region. The lesions spared the head, neck, palms, and soles. She also reported fatigue and a 20-pound weight loss. An initial outpatient punch biopsy from a leg ulcer revealed nonspecific granulomatous inflammation treated with prednisone and hydroxychloroquine without improvement. A review of systems was negative for fever, chills, night sweats, arthralgias, lymphadenopathy, mucosal ulceration, or bleeding. She was born in El Salvador but had spent most of her life in New York. She did not report any recent international travel or sick contacts. There was no personal or family history of immunodeficiency or malignancies.

A 60-year-old man was referred to a pulmonologist evaluation with persistent dyspnea and cough 1 month after discharge for an acute respiratory failure caused by Legionella pneumophila pneumonia, which required invasive mechanical ventilation. Chest CT scan performed during hospitalization showed lobar consolidation of upper left lobe (Fig 1A). Bronchial culture revealed L pneumophila; the patient was treated with levofloxacin and supported with invasive mechanical ventilation for 2 weeks. Chest radiograph after extubation showed almost complete resolution of infiltrates. After 1 month, the patient still complained of dyspnea and a new chest CT scan was performed: the consolidation migrated (Fig 1B; Video 1).

A 49-year-old woman with a history of right breast cancer status post radiation therapy presented to our ED with increasing chest pain, exertional dyspnea, fatigue, and dizziness for several weeks. She denied syncope or near-syncope, and she had no personal or family history of cardiac disease. Her outpatient medications included tamoxifen and venlafaxine.

A 54-year-old Indian woman presented with low-grade fever and cough with expectoration for 1 month. Fever was not associated with any chills or night sweats. Expectoration was minimal in amount and mucoid in nature. Her appetite was decreased, without any significant weight loss. She denied any history of dyspnea or hemoptysis. The patient was diagnosed with rheumatoid arthritis 1 year previously and was initially started on methotrexate and short-term glucocorticoids. At the time of presentation, she was taking methotrexate 15 mg weekly and hydroxychloroquine 200 mg daily. Her joint disease was controlled on immunomodulators. She had no other comorbid condition, and she was a never smoker. She neither traveled within or outside India in the past nor came in contact with patients with pulmonary TB. A chest radiograph was done because a prior workup showed an ill-defined solitary nodular lesion in the right lower zone. She took a course of amoxicillin-clavulanate, but that was of no benefit.

In this second article on medieval Arabic medical discussions on sleep, I show that Ibn Sīnā's pneumatic paradigm of sleep opened up new research pathways for subsequent physicians in Islamic societies. Opposing those who posit a decline in scientific activity post-1200 in these societies, I show that Ibn al-Nafīs (d. 1288), Ibn al-Quff (d. 1286), and Quṭb al-Dīn al-Shīrāzī (d. 1311), among others, raised and answered new questions to highlight the (possible) active role played by the brain in sleep onset and the strengthening of certain brain activities during sleep. They also continued to investigate the (three) stages of sleep and paid attention to different breathing patterns, in addition to pulse, during each stage. Finally, they also applied the pneumatic paradigm in new ways to understand the broader impact of certain medical conditions on sleep.

The primary cause of dyspnea on exertion in heart failure with preserved ejection fraction (HFpEF) is presumed to be the marked rise in pulmonary capillary wedge pressure during exercise; however, this hypothesis has never been tested directly. Therefore, we evaluated invasive exercise hemodynamics and dyspnea on exertion in patients with HFpEF before and after acute nitroglycerin (NTG) treatment to lower pulmonary capillary wedge pressure.

Peripherally inserted central catheters (PICCs) are used commonly to administer antibiotics to people with cystic fibrosis (CF), but their use can be complicated by venous thrombosis and catheter occlusion.

Prediction models for mediastinal metastasis and its detection by endobronchial ultrasound-guided transbronchial needle aspiration (EBUS-TBNA) have not been developed using a prospective cohort of potentially operable patients with non-small cell lung cancer (NSCLC).

Epstein-Barr virus (EBV) frequently is measured at high levels in COPD using sputum quantitative polymerase chain reaction, whereas airway immunohistochemistry analysis has shown EBV detection to be common in severe disease.

Accumulating evidence suggests that the upper airway bacterial microbiota is implicated in asthma inception, severity, and exacerbation. Unlike bacterial microbiota, the role of the upper airway fungal microbiome (mycobiome) in asthma control is poorly understood.