狠狠撸

aha 2015 dizziness approach to vertigo cardiac cycle parathyroid hormones calcitonin calcium homeostasis vitamin d calcium septic shock egdt early goal directed therapy severe sepsis sirs sepsis histamine prostaglandin ohm airway resistance airflow physiology poiseuille respiratory adult bradycardia bradycardia transcutaneous pacing unstable bradycardia atropine stable tachycardia adenosine defibrillation ventricular fibrillation ventricular tachycardia tachyarrhythmia amiodarone tachycardia algorithm tachycardia synchronized cardioversion atrial fibrillation supraventricular tachycardia unstable tachycardia central and peripheral vertigo hints to infarct giddiness vertigo in emergency department