Sandbox: wdx

An ECG in a person with a potassium level of 1.1 showing the classical ECG changes of ST segment depression, inverted T waves, large U waves, and a slightly prolonged PR interval. By James Heilman, MD - Own work, CC BY-SA 3.0

An ECG in a person with a potassium level of 1.1 showing the classical ECG changes of ST segment depression, inverted T waves, large U waves, and a slightly prolonged PR interval. By James Heilman, MD - Own work, CC BY-SA 3.0

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Table

Complications	Polymyositis	Dermatomyositis
Malignancy	Lung Kidney Breast Bladder Endometrial Cervical Thyroid Lymphoma Myeloma Brain	5-7 fold more risks than the general population Lung Ovarian Breast Colorectal Cervical Bladder Nasopharyngeal Esophageal Pancreatic Kidney
Cardiac	Arrhythmia Conduction abnormalities Cardiac arrest Congestive heart failure (CHF) Myocarditis Pericarditis Angina Secondary fibrosis
Pulmonary	Hypoventilation and respiratory failure Aspiration pneumonia Interstitial lung disease
Gastrointestinal	Dysphagia Proximal esophageal skeletal muscle dysfunction
Medication related	Osteoporosis Myopathy
Infection	Pneumonia Infectious diarrhea