[Influence of hemoglobin level(Hb) on survival and prognosis of elderly hip fracture at admission].

OBJECTIVE: To analyze the relationship between hemoglobin(Hb) level on admission and survival prognosis of patients with hip fracture. METHODS: From February 2016 to October 2018, 249 elderly patients with hip fracture were surgically treated including 62 males and 187 females;the age ranged from 60 to 91(73.67±10.52) years;the time from injury to operation was (6.79±2.27) d. The clinical and laboratory examination results were collected. The Hb level at admission and the mortality at 30, 90, 180 and 360 days after operation were observed. According to the Hb level at admission, the patients were divided into Hb<120 g/L and Hb≥120 g/L groups. The survival conditions of the two groups at 30, 90, 180 and 360 days after operation were compared and analyzed. Logistic regression was used to analyze the effect of Hb level on death 30, 90, 180 and 360 days after operation. RESULTS: The mortality rates at 30, 90, 180 and 360 days after operation were 5.22%, 9.24%, 16.87% and 20.48% respectively. The level of Hb at admission was a risk factor for prognosis and death 30, 90, 180 and 360 days after operation(P<0.05). The OR(95% CI) were 2.431(1.475-4.006), 2.625(1.468-4.695), 2.276(1.320-3.925) and 2.082(1.221-3.551) respectively. CONCLUSION: The level of Hb at admission can affect the survival and prognosis of elderly patients with hip fracture. We should further study how to manage the level of Hb before operation.

[A study of hemodynamic changes in the arteries of rabbit's eye caused by acute high intraocular pressure].

OBJECTIVE: Using the color Doppler flow imaging (CDFI) to measure and to study the hemodynamic changes of rabbit's retrobulbar artery caused by changes of intraocular pressure (IOP). To provide information for screening of drugs that improves the blood circulation and decrease the IOP. METHODS: This is a self-contrast research performed at the left eye: high IOP was induced, then the hemodynamic changes of rabbit's retrobulbar artery at different IOP stages were observed. RESULTS: Rabbit's ophthalmic artery (OA), ciliary artery (CA), short posterior ciliary artery (SPCA), central retinal artery (CRA) are low resistant artery. When the IOP raised rapidly, the velocity of blood flow became slower and resistance force index became higher. The hemodynamic changes could not return to normal even after the IOP decreased to the normal level. CONCLUSION: A short-term high IOP can influence the hemodynamic pattern of retro-bulbar arteries. Color Doppler flow imaging is a valuable method for monitoring these changes.