Effect of arteriovenous impulse system to prevent deep venous thrombosis after femoral vein indwelling catheter

Objective To discuss the effective method to prevent deep venous thrombosis （ DVT） after femoral vein indwelling catheter .Methods Retrospective analysis was used to divide 120 critical patients into two groups： the control group was patients before the treatment of arteriovenous impulse system while the observation group was patients after the treatment .DVT in both groups were compared after femoral vein indwelling catheter .Results The changes of blood flow peak speed of femoral vein , average speed , thigh weeks diameter and crus weeks diameter were respectively （47.2 ±6.3 ）cm/s,（29.5 ±4.5）cm/s,（8.0 ±0.5）cm, （4.0 ±0.3） cm in the observation group, and （27.6 ±5.1） cm/s,（18.1 ±2.3） cm/s,（9.8 ±0.2） cm, （5.6 ±0.4）cm in the control group, with statistically significant differences （t=18.785,17.636,-25.564,-24.892, respectively;P〈0.05）.There were 5 cases of DVT and 7 cases of surgery limb swelled in the observation group , 12 cases of DVT and 15 cases of surgery limb swelled in the control group , and the differences were statistically significant （χ2 =3.928,4.250, respectively; P 〈0.05）.There were also statistically significant differences of degree of swelling and DVT between two groups （ W=50.500, 19.500, respectively;P〈0.05）.And patients’ comfort and satisfaction were significantly different （χ2 =8.628, 12.684, respectively; P 〈0.05）.Conclusions Arteriovenous impulse system can effectively prevent DVT after femoral vein indwelling catheter . Key words: Deep venous thrombosis; Femoral vein indwelling catheter; Arteriovenous impulse system