A study on research trends for pregnancy in adolescence: Focusing on text network analysis and topic modeling / 한국간호교육학회지

Purpose@#The aim of this study was to identify core keywords and topic groups in the “adolescent pregnancy” field of research for a better understanding of research trends in the past 10 years. @*Methods@#Topics related to adolescent pregnancy were extracted from 3,819 articles that were published in journals between January 2013 and July 2023. Abstracts were retrieved from five databases (MEDLINE, CINAHL, Embase, RISS, and KISS). Keywords were extracted from the abstracts and cleaned using semantic morphemes. Text network analysis and topic modeling were performed using NetMiner 4.3.3. @*Results@#The most important keywords were “health,” “woman,” “risk,” “group,” “girl,” “school,” “service,” “family,” “program,” and “contraception.” Five topic groups were identified through topic modeling. Through the topic modeling analysis, five themes were derived: “health service,” “community program for school girls,” “risks for adult women,” “relationship risks,” and “sexual contraceptive knowledge.” @*Conclusion@#This study utilized text network analysis and topic modeling to analyze keywords from abstracts of research conducted over the past decade on adolescent pregnancy. Given that adolescent pregnancy leads to physical, mental, social, and economic issues, it is imperative to provide integrated intervention programs, including prenatal/postnatal care, psychological services, proper contraception methods, and sex education, through school and community partnerships, as well as related research studies. Nurses can play a vital role by actively engaging in prevention efforts and directly supporting and educating socially disadvantaged adolescent mothers, which could significantly contribute to improving their quality of life.

Simple anchoring of the penopubic skin to the prepubic deep fascia in surgical correction of buried penis.

PURPOSE: The aim of this study was to categorize concealed penis and buried penis by preoperative physical examination including the manual prepubic compression test and to describe a simple surgical technique to correct buried penis that was based on surgical experience and comprehension of the anatomical components. MATERIALS AND METHODS: From March 2007 to November 2010, 17 patients were diagnosed with buried penis after differentiation of this condition from concealed penis. The described surgical technique consisted of a minimal incision and simple fixation of the penile shaft skin and superficial fascia to the prepubic deep fascia, without degloving the penile skin. RESULTS: The mean age of the patients was 10.2 years, ranging from 8 years to 15 years. The median follow-up was 19 months (range, 5 to 49 months). The mean penile lengths were 1.8 cm (range, 1.1 to 2.5 cm) preoperatively and 4.5 cm (range, 3.3 to 5.8 cm) postoperatively. The median difference between preoperative and postoperative penile lengths was 2.7 cm (range, 2.1 to 3.9 cm). There were no serious intra- or postoperative complications. CONCLUSIONS: With the simple anchoring of the penopubic skin to the prepubic deep fascia, we obtained successful subjective and objective outcomes without complications. We suggest that this is a promising surgical method for selected patients with buried penis.

Dedifferentiated liposarcoma of the retroperitoneum.

A dedifferentiated liposarcoma of the retroperitoneum is an extremely rare tumor. A 51-year old man was admitted to our department because a retroperitoneal mass was seen on abdominal computed tomography at another hospital. Computed tomography of the abdomen and magnetic resonance imaging showed a large pelvic mass located in the right hemipelvis, and it was pushing the right ureter and invading the right kidney, duodenum, colon and inferior vena cava. The patient underwent right radical nephrectomy, pylorus preserving pancreatoduodenectomy, right hemicolectomy and artificial blood vessel replacement for the inferior vena cava. The histopathological diagnosis was dedifferentiated liposarcoma and the patient was free from recurrence on the computed tomography that was done 6 months after the operation.

Density Change of Local Anesthetics and a Mixed Solution Can Be Estimated by Refractometry / 대한마취과학회지

BACKGROUND: Baricity of the local anesthetics is a major determinant of the distribution of local anesthetics in CSF. The purpose of this study was to assess the value of refractometry in measuring the specific gravity of CSF, local anesthetics and adding solutions, and then comparing these to the density of CSF and local anesthetics. METHODS: CSF samples were obtained from 30 patients during spinal anesthesia. 0.5% hyperbaric tetracaines were diluted with CSF to create a 1:1 to 1:10 density and specific gravity measurements were made at room temperature, using a refractometer. 2% lidocaine was diluted with distilled water, normal saline, 5% and 10% dextrose water to create 2%, 1%, 0.67%, 0.5% and 0% mixtures measured respectively. RESULTS: Specific gravity of CSF was 1.0066 +/- 0.0006 and SG of 0.5% tetracaine was 1.0285 +/- 0.0028. The effect of specific gravity on the concentrations of tetracaine was determined by linear regression with r = 0.9803, y = 1.0060 + 0.0440 X x. Dilutions of 2% lidocaine with adding solutions were distilled water, y = 1.0008 + 0.0078 X x ; normal saline, y = 1.0056 + 0.0053 X x ; 5% dextrose, y = 1.0208 - 0.0022 X x ; and 10% dextrose, y = 1.0436 - 0.0135 X x. CONCLUSIONS: The relationship between concentration and specific gravity of local anesthetics is linear. We conclude that refractometry is a reliable method to predict density of local anesthetics.

Efficacy of an Epidural Test Dose with Intravenous Isoproterenol in Enflurane-Anesthetized Adults / 대한마취과학회지

BACKGROUND: The efficacy of an epidural test dose for detecting inadvertent intravascular injection during general anesthesia with volatile anesthetics has not been clearly determined. The object of this study is to evaluate the efficacy of a simulated intravenous isoproterenol test dose in adult patients anesthetized with O2-N2O-enflurane. METHODS: Forty-five healthy adult patients were anesthetized with 1 vol% enflurane and nitrous oxide after endotracheal intubation and were randomized to one of three groups according to the dose of isoproterenol. Isoproterenol 1, 2 and 3 microgram groups (n = 15 each) received 3 ml of 2% lidocaine with 1, 2 and 3 microgram isoproterenol IV respectively, to simulate an intravascularly administered test dose. HR and systolic blood pressure were measured at 20-s intervals for 4 min after injection. RESULTS: Mean maximal heart rate increases were 15 8, 21 8, and 27 10 bpm (mean SD) in the isoproterenol 1, 2 and 3 microgram groups, respectively. Isoproterenol 3 microgram produced 100% sensitivity in the modified (> or = 10 bpm increase) HR criteria and 67% sensitivity in the conventional (> or = 20 bpm increase) HR criteria. CONCLUSIONS: To determine whether an epidural catheter may be in a blood vessel, various vasoactive drugs are often administered. The epidural test dose containing 3 microgram isoproterenol might be a reliable marker for intravascular injection based on the modified HR criterion.

Efficacy of an Epidural Test Dose with Intravenous Isoproterenol in Enflurane-Anesthetized Adults / 대한마취과학회지

BACKGROUND: The efficacy of an epidural test dose for detecting inadvertent intravascular injection during general anesthesia with volatile anesthetics has not been clearly determined. The object of this study is to evaluate the efficacy of a simulated intravenous isoproterenol test dose in adult patients anesthetized with O2-N2O-enflurane. METHODS: Forty-five healthy adult patients were anesthetized with 1 vol% enflurane and nitrous oxide after endotracheal intubation and were randomized to one of three groups according to the dose of isoproterenol. Isoproterenol 1, 2 and 3 microgram groups (n = 15 each) received 3 ml of 2% lidocaine with 1, 2 and 3 microgram isoproterenol IV respectively, to simulate an intravascularly administered test dose. HR and systolic blood pressure were measured at 20-s intervals for 4 min after injection. RESULTS: Mean maximal heart rate increases were 15 8, 21 8, and 27 10 bpm (mean SD) in the isoproterenol 1, 2 and 3 microgram groups, respectively. Isoproterenol 3 microgram produced 100% sensitivity in the modified (> or = 10 bpm increase) HR criteria and 67% sensitivity in the conventional (> or = 20 bpm increase) HR criteria. CONCLUSIONS: To determine whether an epidural catheter may be in a blood vessel, various vasoactive drugs are often administered. The epidural test dose containing 3 microgram isoproterenol might be a reliable marker for intravascular injection based on the modified HR criterion.