Paracentesis, Arthrocentesis, Point of care ultrasound, Heart failure, COPD, High blood pressure, Asthma, Obesity, Head...ache, Diabetic hyperglycemia, High blood cholesterol, Respiratory infection, Coronavirus disease 2019, Celiac disease, Irritable bowel syndrome, Deep vein thrombosis, Hypothyroidism, Dysphagia, Gastroesophageal reflux disease, Chest pain, Prediabetes, Vitamin B-12 deficiency, Vitamin D deficiency, Syncope, Iron deficiency, Dyspnea on exertion