Disorders Of Orthostatic Control

Striatonigral Degeneration

Studies conducted in the last decades of the 20th century have significantly contributed to our understanding of autonomically mediated disorders of orthostatic control. Although they are similar in many respects, many of these disorders have distinct characteristics. In order to make sense of the apparent chaos of nature, mankind has always attempted to classify it in a coherent manner. Therefore, any mode of classification is somewhat arbitrary and open to modification. The current system of...

Approach To The Patient With Vf Or Cardiac Arrest

Because cardiac arrest may be a presentation of acute MI, once a patient has been resuscitated, it is critical to determine whether or not the patient is having an acute, transmural i.e., ST elevation or new LBBB MI. VF that occurs within the first 24-48 h of an acute MI is usually considered to be an epiphenomenon of the MI, and as such does not necessarily require long-term treatment specifically focused on ventricular arrhythmia. Patients with acute MI who are resuscitated from VF and who...

References

Savage DD, Carwin L, McGee DL, Kennel WB, Wolf PA. Epidemiologic features of isolated syncope. The Framingham Study. Stroke 1985 16 626-629. 2. Olshansky B. Syncope An overview and approach to management. In Grubb BP, Olshansky B, eds. Syncope Mechanisms and Management. Futura Publishing Co. Inc., Armonk, NY, 1998, pp. 15-71. 3. Day SC, Cook EF, Funkenstein H, Goldman L. Evaluation and outcome of emergency room patients with transient loss of consciousness. Am J Med 1982 73 15-23. 4....

Paroxysmal Supraventricular Tachycardias

Paroxysmal supraventricular tachycardias PSVT characteristically begin and terminate abruptly. Electrocardiograms ECGs obtained during PSVT typically reveal a narrow QRS complex with a rate between 130 and 240 beats per minute BPM . Atrioventricular nodal reentrant tachycardia AVNRT is the most common cause of PSVT, accounting for two-thirds of cases. Atrioventricular reciprocating tachycardias AVRT , which involve conduction through both the AV node and an accessory pathway, are the second...

K

Lead Ekg Examples

Continued Examples of NSVT K 12-Lead ECG in a patient with repetitive, nonsustained idiopathic VT of right ventricular outflow tract RVOT origin. Note the characteristic LBBB, normal-axis morphology. Fig. 3. Continued Examples of NSVT K 12-Lead ECG in a patient with repetitive, nonsustained idiopathic VT of right ventricular outflow tract RVOT origin. Note the characteristic LBBB, normal-axis morphology. indicate either multiple discrete circuits or multiple breakthrough sites from the...

Fzc

HOCM, 223-224 AAIR pacing, 213 Ablation AF, 120-124, 145-162 Basic principles, 51-53 atrial flutter, 173-178 SVT, 42-47, 51-74 VT 249-250, 359-378 Ablative energy titration technique, 151 ACC AHA guidelines, 211, 218, 239 Accessory pathways catheter ablation, 56-61 Acebutolol AF, 103 chronotropic incompetence, 111 ACE inhibitors NSVT, 278 orthostatic hypotension, 198 VF, 425 VT, 240-241 Acquired immunodeficiency syndrome AIDS autonomic dysfunction, 198 Acute myocardial infarction AMI , 419-452...

Pjrt With Pregnancy

Children, 462, 466 Polymorphic ventricular tachycardia PVT , 122, 255-257, 289, 431-432 catecholaminergic VTA, 353 ischemic, 256-257 nonischemic, 257 nonsustained 272-273 torsades de pointes, 18, 272, 353, 383387 arrhythmia management, 450-451 arrhythmic risk stratification, 451-452 ICD, 450 Post-tussive syncope pacemakers, 220 Postural Orthostatic Tachycardia Syndrome POTS , 197 Potassium channel blocking agents pregnancy, 498-499 POTS, 197 Prazosin orthostatic hypotension, 198 Pregnancy,...