MyMedR

Displaying all 6 publications

Abstract:

Sort:

Fulltext Knowledge, attitude and vaccination status of varicella among students of Universiti Kebangsaan Malaysia (UKM)

Hesham R, Cheong JY, Mohd Hasni J

Med J Malaysia, 2009 Sep;64(3):257-62.
PMID: 20527284 MyJurnal

Varicella is a highly infectious disease that can lead to severe complications such as pneumonia, encephalitis and death. Vaccination is the best method to prevent the disease. The objective of this study was to assess the level of knowledge, attitude and vaccination status of varicella among UKM students. A cross sectional study involving pre-tested questionnaires was undertaken between February and April, 2005. Questionnaires were distributed and filled by the first and second year students from four faculties in UKM (n=879). The faculties included were divided into two categories: medical fields and non-medical fields. The results showed that the overall level of knowledge on varicella among respondents was intermediate. The score of knowledge was significantly higher among medical students (t = 10.9, p < 0.05) compared to non-medical students. The varicella vaccination coverage was low among UKM students (19.3%). The vaccination status was significantly higher among medical students compared to non-medical students (chi2 = 8.6, p < 0.05). Vaccination status of varicella among respondents had no association with the level of knowledge (chi2 = 2.42, p > 0.05).
The relationship between trough concentration of vancomycin and effect on methicillin-resistant Staphylococcus aureus in critically ill patients

Cheong JY, Makmor-Bakry M, Lau CL, Abdul Rahman R

S. Afr. Med. J., 2012 Jul;102(7):616-9.
PMID: 22748440

The incidence of methicillin-resistant Staphylococcus aureus (MRSA) infections in intensive care units in Malaysia is significant. Invasive MRSA infections are commonly treated with vancomycin. In clinical practice, the serum vancomycin trough concentration is used as a surrogate marker of vancomycin efficacy. A low concentration of vancomycin may result in less effective therapy and increase the risk of bacterial resistance. We evaluated the relationship between the resolution of MRSA infections and trough concentrations of vancomycin.
Robotic-assisted mesh pelvic closure for prevention of small bowel descent after surgery for recurrent rectal cancer

Rusli SM, Kim JS, Choo JM, Cheong JY, Piozzi GN, Kim SH

Tech Coloproctol, 2021 Sep 18.
PMID: 34536172 DOI: 10.1007/s10151-021-02529-1
Fulltext A hybrid piezoelectric and triboelectric nanogenerator with lead-free BZT-BCT/PDMS composite and PVA film for scavenging mechanical energy

Gopal SR, Velayutham TS, Gan WC, Cheong JY, Soh AE

RSC Adv, 2023 Mar 08;13(12):7921-7928.
PMID: 36909754 DOI: 10.1039/d3ra00077j

A hybrid piezo/triboelectric nanogenerator (H/P-TENG) is designed for mechanical energy harvesting using polymer ceramic composite films; polydimethylsiloxane/Ba(Zr0.2Ti0.8)O3-0.5(Ba0.7Ca0.3)TiO3 (PDMS/BZT-BCT) and polyvinyl alcohol (PVA). A lead-free BZT-BCT piezoelectric ceramic was prepared via solid-state method and blended into PDMS to form a series of polymer-ceramic composite films, ranging from 5% to 30% by weight. The films were forward/reverse poled with corona poling and their electrical properties were compared to non-poled samples. The H/P-TENG constructed with forward-poled 15 wt% BZT-BCT in PDMS achieved the highest open-circuit voltage, V oc of 127 V, short-circuit current density, J sc of 67 mA m-2, short-circuit charge density, Q sc of 118 μC m-2, and peak power density of 7.5 W m-2, an increase of 190% over pristine PDMS-based TENG. It was discovered that incorporating BZT-BCT into the PDMS matrix improved the triboelectric properties of PDMS. The overlapping electron cloud (OEC) model was used to explain the enhancement and the effect of poling direction of the PDMS/BZT-BCT composite used in H/P-TENG, providing fundamental knowledge of the influence of piezoelectric polarisation on contact electrification.
Fulltext The effects of music and auditory stimulation on autonomic arousal, cognition and attention: A systematic review

Chee ZJ, Chang CYM, Cheong JY, Malek FHBA, Hussain S, de Vries M, et al.

Int J Psychophysiol, 2024 May;199:112328.
PMID: 38458383 DOI: 10.1016/j.ijpsycho.2024.112328

According to the arousal-mood hypothesis, changes in arousal and mood when exposed to auditory stimulation underlie the detrimental effects or improvements in cognitive performance. Findings supporting or against this hypothesis are, however, often based on subjective ratings of arousal rather than autonomic/physiological indices of arousal. To assess the arousal-mood hypothesis, we carried out a systematic review of the literature on 31 studies investigating cardiac, electrodermal, and pupillometry measures when exposed to different types of auditory stimulation (music, ambient noise, white noise, and binaural beats) in relation to cognitive performance. Our review suggests that the effects of music, noise, or binaural beats on cardiac, electrodermal, and pupillometry measures in relation to cognitive performance are either mixed or insufficient to draw conclusions. Importantly, the evidence for or against the arousal-mood hypothesis is at best indirect because autonomic arousal and cognitive performance are often considered separately. Future research is needed to directly evaluate the effects of auditory stimulation on autonomic arousal and cognitive performance holistically.
International standardization and optimization group for intersphincteric resection (ISOG-ISR): modified Delphi consensus on anatomy, definition, indication, surgical technique, specimen description and functional outcome

Piozzi GN, Khobragade K, Aliyev V, Asoglu O, Bianchi PP, Butiurca VO, et al.

Colorectal Dis, 2023 Sep;25(9):1896-1909.
PMID: 37563772 DOI: 10.1111/codi.16704

AIM: Intersphincteric resection (ISR) is an oncologically complex operation for very low-lying rectal cancers. Yet, definition, anatomical description, operative indications and operative approaches to ISR are not standardized. The aim of this study was to standardize the definition of ISR by reaching international consensus from the experts in the field. This standardization will allow meaningful comparison in the literature in the future.
METHOD: A modified Delphi approach with three rounds of questionnaire was adopted. A total of 29 international experts from 11 countries were recruited for this study. Six domains with a total of 37 statements were examined, including anatomical definition; definition of intersphincteric dissection, intersphincteric resection (ISR) and ultra-low anterior resection (uLAR); indication for ISR; surgical technique of ISR; specimen description of ISR; and functional outcome assessment protocol.
RESULTS: Three rounds of questionnaire were performed (response rate 100%, 89.6%, 89.6%). Agreement (≥80%) reached standardization on 36 statements.
CONCLUSION: This study provides an international expert consensus-based definition and standardization of ISR. This is the first study standardizing terminology and definition of deep pelvis/anal canal anatomy from a surgical point of view. Intersphincteric dissection, ISR and uLAR were specifically defined for precise surgical description. Indication for ISR was determined by the rectal tumour's maximal radial infiltration (T stage) below the levator ani. A new surgical definition of T3isp was reached by consensus to define T3 low rectal tumours infiltrating the intersphincteric plane. A practical flowchart for surgical indication for uLAR/ISR/abdominoperineal resection was developed. A standardized ISR surgical technique and functional outcome assessment protocol was defined.