ABSTRACT
Objective To explore the effectiveness and feasibility of microwave Hesetor in resection of soft tissue sarcoma of deep thigh. Methods From January 2009 to August 2014, 33 patients underwent tumor resection of soft tissue sarcoma of deep thigh (10-37 cm in diameter).The high frequency electroscalpel was used in 15 cases before December 2012 (electroscalpel group) whereas the microwave Hesetor was used in 18 cases after January 2013 ( microwave group) .The intraoperative blood loss, operation time, transfusion proportion, length of hospital stay and postoperative drainage volume were compared between the two groups. Results The intraoperative blood loss was significantly decreased in the microwave Hesetor group as compared with that in the electroscalpel group [(175.0 ±129.8) ml vs.(356.7 ±238.2) ml, t=-2.645, P=0.015].Three patients in the electroscalpel group were given blood transfusion of 200 ml, 400 ml and 400 ml, respectively, due to a massive intraoperative hemorrhage, while none in the microwave group required blood transfusion.There was no statistical difference between the two groups regarding to the operation time, length of hospital stay and postoperative drainage volume (P>0.05). Conclusion Microwave Hesetor is of great value in the resection of soft tissue sarcoma of thigh for significantly reducing intraoperative bleeding and obviating blood transfusion.
ABSTRACT
ObjectiveTo probe the feasibility and therapeutic effect of the lateral thigh perforator flap for repairing soft tissue defects in extremity limbs.MethodsDissected six fresh Chinese adult lower limbs specimens which were injected with red latex via arterial cannula. Obseved the number, distribution,course, category of the flaps'perforators and measured their length of pedicle, external diameter on the specimens.Combinafing the results of the anatomy study,thirteen lateral thigh perforator flaps,whose size were 3.0 cm × 3.0 cm - 19.0 cm× 8.0 cm, were applyied to repair different defect, in which 1 was pedieled flap and 12 were free flaps.Two of them applied vessel anastomosis in series with anterlateral thigh perforator flap. The axis was from the fibulae capitulum to greater trochanter of femur.ResultsAll 13 flaps surived com-pletely.In 3-6 months follow-up,all flaps were with thin and good appearance,and they were characterized by soft texture and good colour.No chimatlon and ulcer appeared in any flap.There were no effect of motor function in donor site because of muscle conglutination and scar contracture. There were plainness figure in donor site where skin- grafing was used, and only linearity scar remained where sewed directly.ConclusionThe lateral thigh flap had provided with thin and pleasing appearance, soft texture and minor morbidity in donor site and correspondingly easy dissection. It was feasiblely to repair middling to little skin and soft tissue defect in extremity limbs as a free flap, and to repair skin and soft tissue defect in knee and popliteal space as a pedicel flap.It could apply vessel anastomosis in series with anterlateral thigh perforator flap for repairing large defect.
ABSTRACT
This study analyzed the effects of various body surface areas being cooled by water-perfused suits (WPS) on thermoregulatory response during exercise in a hot environment. Seven male subjects, dressed in clothing with low moisture permeability (rain coats) over WPS covering the whole body surface except for the face, hands, and feet, performed three sessions of 20-min cycling at low intensity (250w/m<sup>2</sup>) in a room maintained at 30℃ under six conditions of body surface cooling : whole body (WB), upper body (UB), lower body (LB), lower body except lower legs (LBEL), head and neck (HN), and no body cooling (NBC). The coolant temperature at the inlet was 20℃ for all conditions, and heat extraction (HE) was estimated by the difference between inlet and outlet water temperatures and water flow rate. Esophageal (Tes) and deep thigh temperatures (T-d.thigh) and heart rate (HR) during exercise were significantly (p＜0.01) higher for NBC and HN, and forearm skin blood flow (SkBF) and dehydration (DEH) were significantly (p＜0.01) lower for WB than for other conditions. There was a similar tendency concerning Tes and T-d.thigh among WB, LBEL, and LB ; however, T-d.thigh for UB was significantly (p＜0.01) higher than for WB, LBEL, and LB. In comparison with resting levels, the mean skin temperature (Tsk) and thermal sensation (TS) significantly (p＜0.01) increased for NBC and HN, and decreased for UB and WB, but remained constant for LBEL and LB during exercise. Under all conditions, increases in Tes (ΔTes) and T-d.thigh (ΔT-d.thigh) at the end of exercise were significantly (p＜0.01) increased when less than 40% of the body surface was cooled (Tsk : above 35.8℃, HE : less than 110W). Furthermore, ΔTes at the end of the exercise was related to ΔTsk×SkBF, while the slope of the regression line between those parameters was steeper when ΔTsk×SkBF values were negative, as opposed to positive values. These results suggest that during light exercise under different body surface cooling conditions : 1) UB leads to a high T-d.thigh while Tes, Tsk, and TS are as low as those for WB, 2) critical levels of body surface cooling area causing a decrease in core temperature elevation might exist, and 3) changes in blood circulation due to body cooling might be affecting temperature responses at the end of exercise.