[2021 scientific breakthroughs in ambulatory general internal medicine]

Psychotherapy diminishes depression relapses when antidepressants are reduced or stopped. Delayed antibiotic therapy is effective and safe while treating community-acquired respiratory infection. Physical rehabilitation after hospitalization due to acute cardiac decompensation is useful in frail patients. Six hours of sleep appears to be associated with a higher risk of dementia in people aged 50-70 years. Patients modify healthcare use after losing their referring physician. Screening for atrial fibrillation in healthy patients aged 65 or older is not beneficial. Physicians' ECG reading skills decrease in the absence of regular training. Patients hospitalized with COVID-19 are often clinically, psychologically, and economically impacted.