1.Safety and efficacy of target controlled infusion administration of propofol and remifentanil for moderate sedation in non-hospital dental practice
Douglas LOBB ; Masoud MIRIMOGHADDAM ; Don MACALISTER ; David CHRISP ; Graham SHAW ; Hollis LAI
Journal of Dental Anesthesia and Pain Medicine 2023;23(1):19-28
Background:
Fearful and anxious patients who find dental treatment intolerable without sedative and analgesic support may benefit from moderate sedation. Target controlled infusion (TCI) pumps are superior to bolus injection in maintaining low plasma and effect-site concentration variability, resulting in stable, steady-state drug concentrations. We evaluated the safety and efficacy of moderate sedation with remifentanil and propofol using TCI pumps in non-hospital dental settings.
Methods:
A prospective chart review was conducted on 101 patients sedated with propofol and remifentanil using TCI pumps. The charts were completed at two oral surgeons and one general dentist's office over 6 months. Hypoxia, hypotension, bradycardia, and over-sedation were considered adverse events and were collected using Tracking and Reporting Outcomes of Procedural Sedation (TROOPS). Furthermore, patient recovery time, sedation length, drug dose, and patient satisfaction questionnaires were used to measure sedation effectiveness.
Results:
Of the 101 reviewed sedation charts, 54 were of men, and 47 were of women. The mean age of the patients was 40.5 ±18.7 years, and their mean BMI was 25.6 ± 4.4. The patients did not experience hypoxia, bradycardia, and hypotension during the 4694 min of sedation. The average minimum Mean Arterial Pressure (MAP) and heartbeats were 75.1 mmHg and 60.4 bpm, respectively. 98% of patients agreed that the sedation technique met their needs in reducing their anxiety, and 99% agreed that they were satisfied with the sedation 24 hours later. The average sedation time was 46.9 ± 55.6 min, and the average recovery time was 12.4 ± 4.4 min. Remifentanil and propofol had mean initial effect-site concentration doses of 0.96 µ/.ml and 1.0 ng/ml respectively. The overall total amount of drug administered was significantly higher in longer sedation procedures compared to shorter ones, while the infusion rate decreased as the procedural stimulus decreased.
Conclusion
According to the results of this study, no patients experienced adverse events during sedation, and all patients were kept at a moderate sedation level for a wide range of sedation times and differing procedures. The results showed that TCI pumps are safe and effective for administering propofol and remifentanil for moderate sedation in dentistry.
2.Ileal Pouch-Anal Anastomosis for Ulcerative Colitis: An Australian Institution’s Experience
Ming Han LIM ; Anton R. LORD ; Lisa A. SIMMS ; Katherine HANIGAN ; Aleksandra EDMUNDSON ; Matthew J.F.X. RICKARD ; Russell STITZ ; David A. CLARK ; Graham L. RADFORD-SMITH
Annals of Coloproctology 2021;37(5):318-325
Purpose:
We report outcomes and evaluate patient factors and the impact of surgical evolution on outcomes in consecutive ulcerative colitis patients who had restorative proctocolectomy with ileal pouch-anal anastomosis (IPAA) at an Australian institution over 26 years.
Methods:
Data including clinical characteristics, preoperative medical therapy, and surgical outcomes were collected. We divided eligible patients into 3 period arms (period 1, 1990 to 1999; period 2, 2000 to 2009; period 3, 2010 to 2016). Outcomes of interest were IPAA leak and pouch failure.
Results:
A total of 212 patients were included. Median follow-up was 50 (interquartile range, 17 to 120) months. Rates of early and late complications were 34.9% and 52.0%, respectively. Early complications included wound infection (9.4%), pelvic sepsis (8.0%), and small bowel obstruction (6.6%) while late complications included small bowel obstruction (18.9%), anal stenosis (16.8%), and pouch fistula (13.3%). Overall, IPAA leak rate was 6.1% and pouch failure rate was 4.8%. Eighty-three patients (42.3%) experienced pouchitis. Over time, we observed an increase in patient exposure to thiopurine (P=0.0025), cyclosporin (P=0.0002), and anti-tumor necrosis factor (P<0.00001) coupled with a shift to laparoscopic technique (P<0.00001), stapled IPAA (P<0.00001), J pouch configuration (P<0.00001), a modified 2-stage procedure (P=0.00012), and a decline in defunctioning ileostomy rate at time of IPAA (P=0.00002). Apart from pouchitis, there was no significant difference in surgical and chronic inflammatory pouch outcomes with time.
Conclusion
Despite greater patient exposure to immunomodulatory and biologic therapy before surgery coupled with a significant change in surgical techniques, surgical and chronic inflammatory pouch outcome rates have remained stable.
3.Daily Pad Usage Versus the International Consultation on Incontinence Questionnaire Short Form for Continence Assessment Following Radical Prostatectomy
Antonio TIENZA ; Petra L. GRAHAM ; Jose E. ROBLES ; Fernando DIEZ-CABALLERO ; David ROSELL ; Juan I. PASCUAL ; Manish I. PATEL ; Sean F. MUNGOVAN
International Neurourology Journal 2020;24(2):156-162
Purpose:
Continence assessment is an essential component of follow-up after radical prostatectomy (RP). Several methods exist to assess the severity of urinary incontinence (UI). Our study examined the relationship and degree of agreement between International Consultation on Incontinence Questionnaire Short Form (ICIQ-SF) scores and the number of pads used in a 24-hour period in the assessment of UI following RP.
Methods:
Continence was prospectively assessed in 746 men from a Spanish urology clinic 12 months after RP using the ICIQ-SF and pad usage. The relationship between ICIQ-SF scores and pad usage was assessed using Spearman rank correlation coefficients. The Jonckheere-Terpstra trend test was used to determine whether the ICIQ-SF score and the component question scores increased with increasing pad usage. The Bonferroni-corrected pairwise Wilcoxon rank-sum test was used to determine which pairs of pad usage levels differed. The weighted kappa was used to evaluate the agreement between pad usage levels and ICIQ-SF questions.
Results:
The continence rate was 82% using the “no pad usage” definition of continence versus 78% using the definition of an ICIQ-SF score of 0 (P<0.001). Strong positive correlations were observed between the number of pads and the ICIQ-SF total and component question scores (rs>0.85, P<0.001). The ICIQ-SF total and component question scores increased significantly with increasing pad usage (P<0.001). The ICIQ-SF scores (P<0.018) for all pairs of pad usage levels (0, 1, 2, or 3 or more) differed significantly. The agreement between the ICIQ-SF leakage amount question and pad usage was very good (rs=0.861, P<0.001).
Conclusions
At 12 months post-RP, 24-hour pad usage was closely correlated with ICIQ-SF, although the continence rate differed depending on the definition used. Higher levels of pad usage were associated with higher questionnaire scores, more leakage, and poor quality of life (interference with everyday life).
4.Arylamine-acetyltransferase 2 genotype-dependent-acetylation of isoniazid in cryopreserved human hepatocytes.
Mark A DOLL ; Raúl A SALAZAR-GONZÁLEZ ; Srineil BODDULURI ; David W HEIN
Acta Pharmaceutica Sinica B 2017;7(4):517-522
Cryopreserved human hepatocytes were used to investigate the role of arylamine-acetyltransferase 2 (NAT2; EC 2.3.1.5) polymorphism on the-acetylation of isoniazid (INH).genotype was determined by Taqman allelic discrimination assay and INH-acetylation was measured by high performance liquid chromatography. INH-acetylation ratesexhibited a robust and highly significant (<0.005) NAT2 phenotype-dependent metabolism.-acetylation rateswere INH concentration- and time-dependent. Following incubation for 24 h with 12.5 or 100 µmol/L INH, acetyl-INH concentrations varied significantly (= 0.0023 and= 0.0002) across cryopreserved human hepatocytes samples from rapid, intermediate, and slow acetylators, respectively. The clear association betweengenotype and phenotype supports use ofgenotype to guide INH dosing strategies in the treatment and prevention of tuberculosis.
5.Regulation of proprietary traditional Chinese medicines in Australia.
Chinese Journal of Natural Medicines (English Ed.) 2017;15(1):12-14
This review article describes the regulation of proprietary Chinese medicines for the Australian market, which may permit many medicines used in Traditional Chinese Medicine to have a simplified process of market access provided that certain criteria for acceptable public safety are met.
Australia
;
Drugs, Chinese Herbal
;
Government Regulation
;
Humans
;
Medicine, Chinese Traditional
;
Phytotherapy
6. Comparison of total immunoglobulin A levels in different samples in Leghorn and broiler chickens
Rubén MERINO-GUZMÁN ; Xochitl HERNANDEZ-VELASCO ; Juan David LATORRE ; Amanda Desha WOLFENDEN ; Kyle Dean TEAGUE ; Lucas Elzie GRAHAM ; Brittany Danielle MAHAFFEY ; Mikayla Francis Ann BAXTER ; Billy Marshall HARGIS ; Guillermo TELLEZ ; Ramiro DELGADO
Asian Pacific Journal of Tropical Biomedicine 2017;7(2):116-120
Objective To standardize an ELISA protocol to quantify total immunoglobulin A (IgA) from different biological samples. Methods Two independent experiments were conducted. In Experiment 1, total IgA levels were quantified from the lachrymal fluid, tracheal swab, and cloacal swab at various time points from Days 30 to 89 in white Leghorn chickens. Experiment 2 was conducted to evaluate the effect of 50 or 500 ppb of aflatoxin B
7.Mass Eradication of Helicobacter pylori to Prevent Gastric Cancer: Theoretical and Practical Considerations.
Yi Chia LEE ; Tsung Hsien CHIANG ; Jyh Ming LIOU ; Hsiu Hsi CHEN ; Ming Shiang WU ; David Y GRAHAM
Gut and Liver 2016;10(1):12-26
Although the age-adjusted incidence of gastric cancer is declining, the absolute number of new cases of gastric cancer is increasing due to population growth and aging. An effective strategy is needed to prevent this deadly cancer. Among the available strategies, screen-and-treat for Helicobacter pylori infection appears to be the best approach to decrease cancer risk; however, implementation of this strategy on the population level requires a systematic approach. The program also must be integrated into national healthcare priorities to allow the limited resources to be most effectively allocated. Implementation will require adoption of an appropriate screening strategy, an efficient delivery system with a timely referral for a positive test, and standardized treatment regimens based on clinical efficacy, side effects, simplicity, duration, and cost. Within the population, there are subpopulations that vary in risk such that a "one size fits all" approach is unlikely to be ideal. Sensitivity analyses will be required to identify whether the programs can be utilized by heterogeneous populations and will likely require adjustments to accommodate the needs of subpopulations.
Health Priorities
;
Helicobacter Infections/complications/diagnosis/microbiology/*therapy
;
Helicobacter pylori
;
Humans
;
Mass Screening
;
Stomach Neoplasms/microbiology/*prevention & control
8.Developmental salivary gland depression in the ascending mandibular ramus: A cone-beam computed tomography study.
Christine A. CHEN ; Yoonhee AHN ; Scott ODELL ; Mel MUPPARAPU ; David Mattew GRAHAM
Imaging Science in Dentistry 2016;46(3):223-227
A static, unilateral, and focal bone depression located lingually within the ascending ramus, identical to the Stafne's bone cavity of the angle of the mandible, is being reported. During development of the mandible, submandibular gland inclusion may lead to the formation of a lingual concavity, which could contain fatty tissue, blood vessels, or soft tissue. However, similar occurrences in the ascending ramus at the level of the parotid gland are extremely rare. Similar cases were previously reported in dry, excavated mandibles, and 3 cases were reported in living patients. A 52-year-old African American male patient was seen for pain in the mandibular teeth. Panoramic radiography showed an unusual concavity within the left ascending ramus. Cone-beam computed tomography confirmed this incidental finding. The patient was cleared for the extraction of non-restorable teeth and scheduled for annual follow-up.
Adipose Tissue
;
Blood Vessels
;
Cone-Beam Computed Tomography*
;
Depression*
;
Follow-Up Studies
;
Humans
;
Incidental Findings
;
Male
;
Mandible
;
Middle Aged
;
Parotid Gland
;
Radiography, Panoramic
;
Salivary Glands*
;
Submandibular Gland
;
Tooth
9.Roadmap for elimination of gastric cancer in Korea.
The Korean Journal of Internal Medicine 2015;30(2):133-139
Most gastric cancers are caused by infection with the common human bacterial pathogen, Helicobacter pylori. It is now accepted that gastric cancer can be prevented and virtually eliminated by H. pylori eradication and this knowledge was responsible for country-wide H. pylori eradication combined with secondary cancer prevention for those with residual risk that was introduced in Japan in 2013. Korea is a high H. pylori prevalence and high gastric cancer incidence country and a good candidate for a gastric cancer elimination program. The presence of an H. pylori infection is now considered as an indication for treatment of the infection. However, antimicrobial drug resistance is common among H. pylori in Korea making effective therapy problematic. Country-wide studies of the local and regional antimicrobial resistance patterns are needed to choose the most appropriate therapies. H. pylori and gastric cancer eradication can be both efficient and cost effective making it possible and practical to make Korea H. pylori and gastric cancer free. There is no reason to delay.
Anti-Bacterial Agents/*therapeutic use
;
Disease Eradication
;
Drug Resistance, Bacterial
;
Helicobacter Infections/*drug therapy/epidemiology/microbiology
;
Helicobacter pylori/*drug effects/growth & development
;
Humans
;
Prevalence
;
Primary Prevention/*methods
;
Republic of Korea/epidemiology
;
Risk Assessment
;
Risk Factors
;
Stomach Neoplasms/epidemiology/microbiology/*prevention & control
;
Treatment Outcome
10.Effects of Tourniquet Use on Quadriceps Function and Pain in Total Knee Arthroplasty
David LIU ; David GRAHAM ; Kim GILLIES ; R Mark GILLIES
The Journal of Korean Knee Society 2014;26(4):207-213
PURPOSE: A pneumatic tourniquet is commonly used in total knee arthroplasty (TKA) to improve surgical field visualisation but may result in quadriceps muscle ischaemia. We performed this study to analyse the effect of the tourniquet on recovery following TKA. MATERIALS AND METHODS: A prospective randomised single-blinded trial was undertaken to examine the effect of the tourniquet on post-operative pain, swelling, blood loss, quadriceps function and outcome following TKA. Twenty patients with osteoarthritis of the knee were randomised to tourniquet or no tourniquet groups. Quadriceps function was assessed using surface electromyography (EMG) during active knee extension. RESULTS: The no tourniquet group had significantly less pain in the early post-operative period compared to the tourniquet group. There was no difference in Oxford knee score, range of motion, or thigh and knee swelling up to 12 months post-operatively. Quadriceps function, measured by surface EMG, was compromised for the first six months post-surgery by tourniquet use. The radiological cement mantle at the bone prosthesis interface at 12-month follow-up was not affected by the absence of a tourniquet. CONCLUSIONS: We believe that it is safe and beneficial for our patients to routinely perform TKA without a tourniquet.
Arthroplasty
;
Electromyography
;
Follow-Up Studies
;
Humans
;
Knee
;
Osteoarthritis
;
Prospective Studies
;
Prostheses and Implants
;
Quadriceps Muscle
;
Range of Motion, Articular
;
Thigh
;
Tourniquets

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