mechanical valve lungs biological valve prosthetic valve mitral regurgitation mitral stenosis asthma ecg stelate ganglion; block; bronchospasm wheezing bronchoilators respiratory ventolin implantable defibrillator left heart failure pacemaker heart xray chest miral valve pefr bronchodilators pericardtis tamponade acidosis arterial puncture alcalosis dyspneea clinical cases ventricular fibrillation atrial flutter ventricular tachycardia cardiac arrhythmia atrial fibrillation catheter cardiac ablation dvt pulmonary embolism deep vein thrombosis pe
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