1.Mental Capacity Assessment, LPA, Court Appointed Deputy Application, and Ethical Issues related to Mental Capacity Act – 2021 UPDATE
The Singapore Family Physician 2021;47(2):12-18
The Mental Capacity Act (MCA) addresses the need for authorised individuals (donees) to act on behalf of persons who are unable to make decisions for themselves. One of the consequences of Singapore’s rapidly ageing population is the rise in the number of patients suffering from stroke and age-related neurodegenerative diseases. As their cognitive function deteriorates, they also lose their ability to make independent decisions, which makes them at risk of potentially detrimental decisions made by them or others. Conflicts and uncertainty may come about because of a lack of clarity concerning the individual's wishes with mental incapacity. There is a growing concern amongst individuals that, on losing their mental capacity, they also lose their right to make decisions based on. The MCA has two mechanisms to address such issues, namely, (1) Lasting Power of Attorney (LPA) Certification and (2) Court-appointed Deputy Application for Patients. The former allows for cognitively intact persons to appoint one or more persons to act on their behalf should they lose their mental capacity in the future. The Court-appointed Deputy Application for Patients is required for persons who have not made an LPA before losing mental capacity. The court-appointed deputy can make certain decisions on their behalf. A deputy can be an individual or a licensed trust company under the Trust Companies Act (Cap.336). There are also five ethical issues related to the MCA of 2008 to be discussed.
2.Multiparametric MRI in Active Surveillance of Prostate Cancer: An Overview and a Practical Approach
Chau Hung LEE ; Teck Wei TAN ; Cher Heng TAN
Korean Journal of Radiology 2021;22(7):1087-1099
MRI has become important for the detection of prostate cancer. MRI-guided biopsy is superior to conventional systematic biopsy in patients suspected with prostate cancer. MRI is also increasingly used for monitoring patients with low-risk prostate cancer during active surveillance. It improves patient selection for active surveillance at diagnosis, although its role during follow-up is unclear. We aim to review existing evidence and propose a practical approach for incorporating MRI into active surveillance protocols.
3.Multiparametric MRI in Active Surveillance of Prostate Cancer: An Overview and a Practical Approach
Chau Hung LEE ; Teck Wei TAN ; Cher Heng TAN
Korean Journal of Radiology 2021;22(7):1087-1099
MRI has become important for the detection of prostate cancer. MRI-guided biopsy is superior to conventional systematic biopsy in patients suspected with prostate cancer. MRI is also increasingly used for monitoring patients with low-risk prostate cancer during active surveillance. It improves patient selection for active surveillance at diagnosis, although its role during follow-up is unclear. We aim to review existing evidence and propose a practical approach for incorporating MRI into active surveillance protocols.
4.MENTAL CAPACITY ASSESSMENT (AN UPDATE): LASTING POWER OF ATTORNEY CERTIFICATION
The Singapore Family Physician 2019;45(3):11-17
The Mental Capacity Act (MCA) addresses the need to act on behalf of persons who are unable to make decisions for themselves.One of the consequences of Singapore’s rapidly aging population is the rise in the number of patients suffering from stroke and age-related neuro-degenerative diseases. As their cognitive function deteriorates, they also lose their ability to make independent decisions, and this makes them at risk of potentially detrimental decisions made by them or others. Conflicts and uncertainty may come about because of a lack of clarity concerning the wishes of the individual with mental incapacity. There is a growing concern amongst individuals that, on losing their mental capacity, they also lose their right to determine their preferences to choose. The MCA has mechanisms in place to address such issues.The Singapore Family Physician first published an article on the Mental Capacity Act in 2009, and its lessons and messages hold for family physicians today. This article further updates on two provisions of the MCA:1.Lasting Power of Attorney (LPA) Certification2.Court-appointed Deputy Application for PatientsThe former allows for persons who are cognitively intact to appoint one or more persons to act on their behalf should they lose their mental capacity in the future.Should a person not have made an LPA before losing mental capacity, a deputy is appointed by the court to make certain decisions on their behalf. A deputy can be an individual or a licensed trust company under the Trust Companies Act (Cap.336).This paper will explore the processes involved in certifying the LPA as well as the court-appointed deputies.
5.Effects of vitamin B fortified sucrose solution on the longevity and reproductive potentials of laboratory-bred Culex quinquefasciatus Say adult
Tan, S.B., Nazni, W.A., Lee, H.L.
Tropical Biomedicine 2016;33(1):141-148
Laboratory colonised mosquitoes are usually maintained on vitamin B complex
fortified sucrose solution, however only few studies were conducted to evaluate the effects
of such practice. This study aimed to determine the effects of different concentrations of
sucrose solution fortified with and without 1% vitamin B complex on the longevity and
reproductive potential of adult female of a local strain of Culex quinquefasciatus Say. Two
arms of studies were carried out separately and each arm was triplicated. In one arm,
concentrations of sucrose solution at 0%, 1%, 3%, 5% and 10% fortified with 1% Vitamin B
complex were fed to the mosquitoes, while in the other arm, similar sucrose concentrations
were used but without 1% vitamin B complex. Adult Cx. quinquefasciatus maintained on 5%
sucrose solution fortified with 1% vitamin B complex exhibited significant extended vitality
and longevity in stimulating ovarian development, compared with other vitamin fortified
sucrose concentrations (p<0.05). The vitality and longevity of F0 and F1 males were 76.67±2.19
days and 57.67±8.19 days respectively. The F0 females survived the longest duration of
107.67±5.61 days and the F1 females survived 90.67±12.47 days with higher number of eggs
laid, i.e. 1427.67±62.89 eggs at a higher hatchability rate of 57.05±8.39% or 814.49 eggs
hatched. Thus, 5% sucrose solution fortified with 1% Vitamin B complex should be used to
produce colonies of homogenous mosquitoes as this exerts positive biological effects on
laboratory-bred Cx. quinquefasciatus.
6.Systemic Absorption of Gentamicin Irrigation in Joint Replacement Surgery: A cause of concern
KH Lee ; ABY Ng ; TB Tan ; K Mossinac ; BC Se To
Malaysian Orthopaedic Journal 2008;2(2):11-16
Gentamicin, whether administered either intravenously,
incorporated into bone cement or for local intra-operative
irrigation, is a commonly used antibiotic in orthopaedic
practice. The former two have been well studied, however
the literature on the therapeutic efficacy and safety of
gentamicin irrigation is sparse. The objective of this study was to assess systemic absorption of gentamicin irrigation in joint replacement surgery. This was a non-randomised, prospective study. Ninety-eight patients (group A) who underwent total joint replacement and 40 patients (group B) who underwent hemi-arthroplasty were treated intraoperatively with gentamicin irrigation. Serum gentamicin levels were assayed at 4 hours and 24 hours post-surgery.
Sixteen of 98 patients in group A (16%) and 12 out of 40
patients in group B (30%) were found to have serum
gentamicin level above 2mcg/ml at 4 hours post-surgery. We
conclude that intra-articular gentamicin irrigation is
systemically absorbed at substantial levels.
7.Analysis on Repeated Offline of Files in Database in No.1 Military Medical Project
Shiling LAN ; Xiaoguang YANG ; Ming LEE ; Rui MA ; Yan TAN
Chinese Medical Equipment Journal 2004;0(09):-
Objective To explore the cause of repeated offline of files in the database of No.1 Military Project and find the method to solve the problem. Methods The abnormal offline of files in database is not by chance,and its document in oracle is not very clear. Using the knowledge from internet,the fault was repeatedly simulated on test machine and the source of the fault was found. Results Solving plans and countermeasures were put forward. Conclusion The database of the No.1 Military Medical Project is the core of military hospital work,so its importance is self-evident. The technical support of No. 1 Military Project is strengthened,the right maintenance direction of the database is pointed out as well as the right solution to deal with the problem.
8.Variability of plantar response in normal population
Ri An Lee ; Li Lian Tay ; Kheng Seang Lim ; CT Tan
Neurology Asia 2011;16(2):143-147
Background: There is lack of normality data in the literature on the plantar response. Objective: To
determine the variability of plantar response in normal population and factors that might contribute to
the variability. Methods: We conducted a study of plantar response in healthy subjects aged 19-21 in
two phases. First phase was plantar examination with hard strike. Subjects with big toe extension in
the fi rst phase were re-examined with light and hard strike in the second phase. Results: 100 subjects
recruited in fi rst phase, 19 subjects in second phase. Out of 600 attempts (3 attempts for each foot) with
hard strike, responses of the big toe were fl exion (48.3%), extension (11.3%), no movement (39.8%);
other toes were fl exion (55.0%), extension (13.0%), no movement (32.0%); ankle was dorsifl exion
(30.8%), no movement (59.3%); knee were fl exion (15.7%), no movement (84.3%); hip were fl exion
(15.2%), no movement (84.8%). Of those with big toe extension, signifi cantly less had persistent big
toe extension with light strike. More (41%) among those with extensor big toe has withdrawal response
(with fl exion of the hip and knee) as compared to those with fl exor big toe (18.5%, p<0.05). Interfoot
asymmetry was seen in 27% (kappa 0.54). Plantar responses of sequential strikes were mostly
consistent, with only 3.5% inter-attempt variability.
Conclusion: Plantar response with extensor great toe is seen in about 10% of normal adults, less with
lighter strike. Withdrawal response can be a partial explanation to the big toe extensor response in
normal adults.
9.Withdrawal response in healthy adults
KS Chew ; LK Oon ; RA Lee ; KS Lim ; CT Tan
Neurology Asia 2010;15(2):159-165
Background: Withdrawal response was used to explain extensor plantar response in population without
pyramidal dysfunction but there is lack of data characterizing this response in normal population.
Objective: To characterize withdrawal response from pain and tickle sensation in population without
any neurological defi cit. Methods: The study was carried out using four different stimuli, namely
heat-induced pain, cold-induced pain, electric-induced pain using electromyography stimulator and
ticklish sensation using superworm (Zophobas morio), applied to normal subjects in University
Malaya Medical Centre, Kuala Lumpur. Results: Heat-induced pain resulted in fl exion of the big toe
(61.1%), other toes (62.3%), ankle dorsifl exion (82.6%), knee fl exion (83.9%) and hip fl exion (83.9%).
Electric-induced pain showed fl exion of the big toe (27.7%), other toes (28.3%), ankle dorsifl exion
(51.0%), knee fl exion (76.0%) and hip fl exion (76.0%). Ticklish sensation showed fl exion of the big
toe (14.8%), other toes (14.8%), ankle dorsifl exion (22.7%), knee fl exion (21.9%), and hip fl exion
(21.9%). There was signifi cant correlation between fear and ticklish sensation induced withdrawal
responses and extension of big toe. Cold induced pain resulting in big toe fl exion (6.4%), other toes
(6.9%), dorsifl exion of ankle (7.1%), fl exion of knee (6.9%), and hip fl exion (6.9%). Females were
more responsive to heat, males to electrical stimulation. The prevalence of big toe extension ranged
from 11.0% (electrical), 6.3% (ticklish), 4.8 (heat), to 0% (cold), a mean of 5.2% overall.
Conclusion: Withdrawal response caused by nociceptive and ticklish sensation consists mostly of big
toe fl exion and of other toes, ankle dorsifl exion and fl exion of the knee and hip. Extension of the big
toe is seen in about 5% of all the stimulation.