Myocardial Uptake of Technetium-99m Stannous Pyrophosphate Following Direct Current Transthoracic Countershock
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چکیده
The effect of direct current (DC) countershock upon myocardial technetium-99m stannous pyrophosphate (PYP) uptake was studied in 22 dogs. All eight dogs imaged had positive abnormal PYP scintigrams that were usually indistinguishable from experimental infarction. In three animals, additional areas of radionuclide uptake were seen in overlying noncardiac tissue. Left and right ventricular myocardial PYP uptake averaged (± SEM) 23 ± 5 times control and 24 ± 6 times control, respectively. These activity ratios occurred without reduction in regional myocardial
منابع مشابه
Myocsrdial uptake of technetium-99m stannous pyrophosphate following direct current transthoracic countershock.
The effect of direct current (DC) countershock upon myocardial technetium-99m stannous pyrophosphate (PYP) uptake was studied in 22 dogs. All eight dogs imaged had positive abnormal PYP scintigrams that were usually indistinguishable from experimental infarction. In three animals, additional areas of radionuclide uptake were seen in overlying noncardiac tissue. Left and right ventricular myocar...
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The present studies performed in experimental animals demonstrate that electrical direct current cardioversion can produce skeletal muscle damage and increased technetium-99m stannous pyrophosphate (99mTc-PYP) uptake; in experimental animals the electrically damaged skeletal muscle shows necrosis with extensive calcium deposition. In addition, the frequent administration of high energy cardiove...
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Thirty consecutive patients underwent technetium-99m stannous pyrophosphate myocardial scintigraphy 48-72 hours after successful cardiopulmonary resuscitation and direct current cardioversion. Five patients with transmural myocardial infarctions by ECG and enzyme determinations were correctly identified by scintigraphy. Myocardial scans were positive in five of nine patients with nontransmural ...
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a markedly overweight patient. Circulation 57: 827, 1978 34. Anderson GJ, Suelzer J: The efficacy of trapezoidal wave forms for ventricular defibrillation. Chest 70: 298, 1976 35. Tacker WA Jr, GuinA GA, Geddes LA, Bourland JD, Korompai FL, Rubio PA: The electrical dose for direct ventricular defibrillation in man. J Thorac Cardiovasc Surg 75: 224, 1978 36. Ewy GA: Subject dependent factors in ...
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