Three of these patients presented with a recurrent mass in the surgical bed detected by ultrasound after total thyroidectomy. The other 13 patients presented with a suspicious lymph node(s) in the lateral neck on a follow-up ultrasound examination. Twelve of the 13 patients who presented with a lateral neck recurrence previously had a modified neck dissection. viagra for sale
The clinical information regarding the histologic findings of tumor size and location is summarized in table 1. viagra side effects mayo clinic All patients who underwent rfa treatment of neck recurrence had a positive us-guided fna biopsy prior to the procedure. viagra samples
Table 1. viagra v s viagra Local neck recurrence treated by radiofrequency ablation all patients were premedicated with 0. 625 mg of intravenous droperidol and received intravenous fentanyl citrate (100–400 ìg) and medazolam (1–4 mg) that were titrated to patient discomfort during the procedure. Two 180-cm2 grounding pads were placed horizontally on the patient's anterior or posterior chest wall and connected to the reference electrode port on the rf generator. viagra 100mg split in half Under ultrasound guidance with a 10 to 14 mhz linear transducer a single rf electrode (cool-tip; radionics inc. , burlington, ma) with a 1- or 2-cm active tip was inserted into the mass. order viagra online
The rf electrode was connected to an rf generator (cosman coagulator-1, radionics inc. buy generic viagra online
) and treated with the maximum allowable current for between 2 and 12 minutes. A peristaltic pump was used to perfuse chilled water (15°–20°c) at 80 ml/min through the perfusion port of the electrode to prevent tissue charring and to improve the radius of rf energy deposition. (the radius of thermocoagulation for a noninternally cooled treatment is 8 mm from the active portion of the rf electrode. viagra cost
This radius can be increased up to 10 to 12 mm with internal perfusion. viagra 100 dose ) internal cooling was only used for masses exceeding 1 cm in greatest dimension. The electrode tip temperature was maintained at 90°c for 2 minutes without internal cooling. Both the us-detected appearance of microbubbles and the achievement of a cytotoxic temperature of 50°c within the mass were accepted together as the endpoint of the treatment procedure. viagra coupon
Rfa induces focal coagulative necrosis to eradicate small areas of tissue in a controlled fashion. Continuous real-time us monitoring with gray-scale and color-dop. viagra viagra best
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