Patients receiving knee arthroplasty with pre-existing long-term aspirin use suffer lower risk of perioperative complications but feel more postoperative pain.

Background: Aspirin has gained increasing use-popularity on account of its multiple benefits. The present study aimed to investigate how a pre-existing long-term aspirin use (L-AU) would affect perioperative complications and postoperative pain in primary total knee arthroplasty (TKA) patients.

Methods: Utilizing the National Inpatient Sample (NIS) database, primary TKAs were divided into L-AU and non-L-AU cohorts.

[Effects of dexmedetomidine on propofol dosage in target-controlled infusion and hemodynamics during laparoscopic surgery under general anesthesia].

Objective: To assess the effects of dexmedetomidine (Dex) on propofol dosage in target-controlled infusion (TCI) and hemodynamics in patients undergoing laparoscopic surgery under general anesthesia.

Methods: Sixty patients undergoing laparoscopic surgery under general anesthesia were randomly divided into control group (n=30) and the Dex group (n=30). The patients in Dex group received a loading dose of Dex (1 µg/kg, infused within 10 min) before the surgery followed by continuous infusion at the rate of 0.

[Application of subclinical doses of pentazocine and propofol in painless vaginal egg retrieval].

Objective: To assess the feasibility of using subclinical doses of pentazocine in painless egg retrieval.

Methods: Eighty-one patients undergoing painless egg retrieval were randomized into the observation group and the control group to receive 0.4 mg/kg pentazocine with 1.

[Risk factor analysis of early complications following anterior spine surgery in 258 cases of cervical spondylotic myelopathy].

Objective: To define the possible risk factors for early complications following anterior surgery for cervical spondylotic myelopathy.

Methods: Two hundred and fifty-eight cases of cervical spondylotic myelopathy receiving anterior surgery between January 1992 and December 2003 were reviewed and the gender, age and other factors of the patients were analyzed with single-factor analysis and multiple logistic regression.

Results: Complications arising in the early stage after the surgery were found in 19 cases (20 events), with an incidence rate of 7.