Overdrive suppression of tachyarrhythmias is an indication for a pacemaker
Indicate whether the statement is true or false
TRUE
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What is the MOST frequently used compound for water fluoridation in the United States today?
A) Hydrofluosilicic acid B) Sodium silicofluoride C) Sodium fluoride D) Stannous fluoride
All of the following structures are found within the mediastinum EXCEPT:
a. heart b. thymus c. esophagus d. diaphragm
What is the middle layer of the heart called?
a. myocardium c. pericardium b. endocardium d. epicardium
A 21-year-old male complains of acute shortness of breath with sharp chest pain during inspiration. You auscultate his lungs and hear a grating sound over the left lower lobe during inspiration. This patient's clinical presentation is MOST likely caused by:
A. pleural inflammation. B. a tear in the pleural lining. C. perforation of the lung. D. excessive pleural fluid.