Supraventricular tachycardia SVT

The first-line drug for treating an acute attack of reentrant supraventricular tachycardia (SVT) is... 

The answer is e. (Hardman, pp 858-874.) Because verapamil, a Ca channel blocker, has a selective depressing action on AV nodal tissue, it is an ideal drug for both immediate and prophylactic therapy of supraventricular tachycardia (SVT). Nifedipine, another Ca channel blocker, has little effect on SAT Lidocaine and adenosine are parenteral drugs with short ha If-lives and, thus, are not suitable for prophylactic therapy. Procainamide is more suitable for ventricular arrhythmias and has the potential for serious adverse reactions with long-term use. 

The only calcium channel blocking drug to have been licensed for the treatment of cardiac arrhythmias is verapamil. Its main uses are in the treatment of supraventricular tachycardia (SVT) and paroxysmal SVT. Because verapamil lengthens the ERP and FRP of the AV node and prolongs AV nodal conduction time [16], it can be used to control the ventricular rate in atrial fibrillation or atrial flutter and it usually terminates re-entry arrhythmias involving the AV node [208, 209], However, intravenous verapamil should not be given to patients who have the Wolff-Parkinson-White syndrome and atrial... 

The nurse is preparing to administer the antidysrhythmic adenosine (Adenocard) for the client diagnosed with supraventricular tachycardia (SVT). Which assessment finding would indicate the effectiveness of the medication ... 

Tachycardias are generally classified as ventricular or supraventricular. Ventricular tachycardia (VT) is due to primary ventricular dysfunction and is often acutely dangerous. Supraventricular tachycardia (SVT) is almost never immediately dangerous and does not necessarily respond to ICD therapy hence, the treatment of SVT by an ICD is generally considered undesirable. The discrimination subsystem identifies rhythms that are sufficiently fast to treat (tachycardia), but are not ventricular in origin (SVT). Again, the bias of the device is to overtreat because the erroneous treatment of SVT is considered preferable to failure to treat a potentially lethal Ventricular. 

The methods for detection are not uniform amongst the ICD manufacturer s devices. Each has a specific methodology for establishing tachycardia detection and applying enhancements allowing for supraventricular tachycardia (SVT)/VT discrimination. The detection principles that follow are applicable to most ICDs and should provide a basis for understanding this process. One may refer to the physician s manual for detection nuances specific to each ICD manufacturer and model. 

Differentiating ventricular tachycardia (VT) from supraventricular tachycardia (SVT) with aberrancy is difficult. Careful assessment of a 12-lead ECC or rhythm strip can help you determine the arrhythmia with 90% accuracy. 

SSRI selective sCTotonin reuptake inhibitor (class of drugs used to treat d ression, e.g., sCTtraline) SSS sick sinus s5mdrome stat immediately (Latin statim ) supl supplement or supplied supp suppository Susp suspension SVT supraventricular tachycardia Sx s5mptom S5md syndrome Sz seizure tab/tabs tablet/tablets tach tachycardia TB tubCTCulosis TBI traumatic brain injury TCA tricyclic antidqjressant (class of drugs commonly used to treat d ression, e.g., amitriptyline) TCP transcutaneous pacing TD transdermal TFT thyroid function test TEA transient ischemic attack tid three times a day (Latin ter in die ) tine tincture TMP trimethoprim (type of antibiotic)... 

Electrocardiograms typical of a variety of arrhythmias. SVT, supraventricular tachycardia AFL, atrial flutter AFib, atrial fibrillation VT, ventricular tachycardia VT-TdP, ventricular tachycardia of the torsade de pointes type. 

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