Observation of heart rate variablity in senile cataract surgery

doi:10.3969/j.issn.1674-3806.2013.10.04

Abstract：Objective To observe the heart rate variability ( HRV) change in senile non-phacoemulsifica-tion, to explore the influence of cataract surgery on perioperative cardiac autonomic nervous system (ANS)function, and to provide a theoretical basis for evaluation of surgical risk .Mtehods Using prospective method, 60 senile cata-ract patients(60 eyes) aged over 60 without cardiovascular disease histories were randomly selected ;under local an-aesthesia, all patients underwent non-phacoemulsification extracapsular cataract extraction plus intraocular lens im -plantation surgery .24 h dynamic electrocardiogram ( DCG) was recorded for measurement of HRV frequency domain indexes at 17 h one day before surgery and at17 h the post-operative day .Observed the senile patients , and the fre-quency domain index(LF, HF and LF/HF) changes from 0 h to 5 h before surgery, during, and 12 h to 17 h after surgery were recorded .The detecting data and calculation material were statistically analyzed in each group , and the changes′characteristics and reasons were compared .Results In the perioperative period , all patients were found that frequency domain index during and after surgery were significantly lower than those before surgery ( P<0.05 or P<0.01 ) .The HRV frequency domain before surgery was significantly lower than that after surgery ( P<0.05or P<0.01 ) .The results showed that under local anesthesia , HRV during and after surgery were significantly lower than that before surgery in patients who undergone non-phacoemulsification extracapsular cataract extraction plus intraocu -lar lens implantation surgery ,which declined more significantly during surgery .Conclusion The stress simulations from local anesthesia and cataract surgery can evidently influence ANS function in patients with senile cataract , which prompt that both during and after surgery may be the periods easy to trigger cardiovascular events , and corresponding prevention measures should be taken to reduce the surgical risk .