Study on the characteristics of recessive hemorrhagic loss and related factors in the treatment of intertrochanteric fracture in elderly patients with PFNA

Abstract

Objective To analyze the characteristics and influencing factors of recessive hemorrhagic loss of intertrochanteric fracture in elderly patients with PFNA. Methods The clinical data of 120 elderly patients with IFF from January 2011 to December 2017 in Rizhao Central Hospital were retrospectively analyzed.The dominant blood loss, hidden blood loss and total blood loss after PFNA were calculated, and the influencing factors were analyzed. Results The total blood loss of 120 elderly patients with intertrochanteric fractures was (911.4±240.8)mL, the dominant blood loss was (255.7±89.7)mL, occult blood loss was (679.5±208.6)mL, the hidden blood loss was significantly greater than the dominant blood loss, the difference was statistically significant (t=8.669, P 75, the preoperative use of anticoagulant drugs, unstable fracture and diabetes were the independent risk factors of hidden blood loss of PFNA (OR=2.254, 1.676, 0.753, 0.965, 2.625, all P<0.05). Conclusion Recessive blood loss is the main cause of loss of blood in patients with intertrochanteric fracture of the femur treated with PFNA.Hypertension, surgery after injury delayed more than 5d, aged more than 75 years, the preoperative use of anticoagulant drugs, unstable fractures and diabetes are risk factors of hidden blood loss of PFNA. Key words: Femoral fractures; Fracture fixation, intramedullary; Blood loss, surgical; Aged