[Effect of retrograde dissection of the facial nerve along the mandibular margin on postoperative quality of life in patients with benign superficial parotid tumors].

Purpose: To assess the impact of retrograde dissection of the facial nerve along the mandibular margin on the postoperative quality of life in patients with benign superficial parotid tumors.

Methods: One hundred and sixteen patients who underwent surgical treatment for benign superficial parotid tumors at Qingdao Central Hospital from January 2020 to January 2023 were involved. The patients were randomly allocated into two groups, with 58 patients in each group using the touch ball method.

Secondary metabolites from marine sponges of the genus : a comprehensive update insight on structural diversity and bioactivity.

As one of the most common marine sponges in tropical and subtropical oceans, the sponges of the genus , have emerged as unique and yet under-investigated pools for discovery of natural products with fabulous molecular diversity and myriad interesting biological activities. The present review highlights the chemical structure and biological activity of 355 compounds that have been isolated and characterized from the members of sponges, over the period of about five decades (from 1971 to November 2021). For a better understanding, these numerous compounds are firstly classified and presented according to their carbon skeleton as well as their biosynthetic origins.

[Effects of dynamic nutrition support on energy metabolism, immune function and stress response after oral and maxillofacial tumor surgery].

Purpose: To observe the effect of dynamic nutrition support on postoperative energy metabolism, immune function and stress response in patients with oral and maxillofacial tumors.

Methods: Fifty-six patients with oral and maxillofacial tumor surgery were randomly divided into experimental group and control group (28 in each group). Patients in the experimental group received dynamic enteral and parenteral nutrition support according to the stress period after surgery, ω-3 fish oil fat milk injection and glutamine were added in the nutrition support program.

[Application of analytic hierarchy process in determining the weight coefficients of diagnostic index system for occupational chronic obstructive pulmonary disease].

To determine the weight coefficients of the diagnostic index system for occupational chronic obstructive pulmonary disease (COPD), and to provide a reference for the determination of diagnostic indices. The analytic hierarchy process was performed to establish the hierarchical structure of diagnostic indices for occupational COPD, construct a pairwise comparison judgment matrix, and conduct a consistency test on the judgment matrix, in order to determine the weight of each index. The weight coefficients of six first-level indices and 27 second-level indices were determined based on the analytic hierarchy process.