Cardiac Dysrhythmias and Neurological Dysregulation: Manifestations of Profound Hypomagnesemia.

Magnesium is the second most common intracellular cation and serves as an important metabolic cofactor to over 300 enzymatic reactions throughout the human body. Among its various roles, magnesium modulates calcium entry and release from sarcoplasmic reticulum and regulates ATP pumps in myocytes and neurons, thereby regulating cardiac and neuronal excitability. Therefore, deficiency of this essential mineral may result in serious cardiovascular and neurologic derangements.

A Case of False-Positive Caused by .

is a nontuberculous mycobacterium shown to cause symptoms similar to pulmonary . Certain strains have been shown to cross-react with the probes used to detect , making this a diagnostic challenge. We present a 56-year-old gentleman who developed signs and symptoms of lung infection with computed tomography scan of the chest showing right lung apex cavitation.