Examining the need for a high level of therapeutic security at a regional forensic mental health service in Aotearoa New Zealand.

The ceiling of therapeutic security in Aotearoa New Zealand is medium security. The aim of this study is to identify and characterise a putative cohort of high-secure patients at a medium-secure regional forensic mental health service. A retrospective review of all admissions to a specific service was conducted over 3.75 years. The Dangerousness Understanding, Recovery and Urgency Manual, Triage Security Scale (DUNDRUM-1) was used to identify patients with high-secure care needs. A multiple logistic regression analysis was used to identify the local needs of this cohort. We found a significant incidence (an admission every 55 days) and prevalence (11%) of mixed-gendered and culturally diverse patients with high-secure care needs. The cohort had a high prevalence of psychosis and violent offences, and relatively short length of stay. There is also an indication that the cohort was subject to more restrictive practice. A solution is proposed to meet the needs of this cohort.

High-security closed devices are efficient and safe to protect human oocytes from potential risk of viral contamination during vitrification and storage especially in the COVID-19 pandemic.

PURPOSE: The main purpose and research question of the study are to compare the efficacy of high-security closed versus open devices for human oocytes' vitrification. METHODS: A prospective randomized study was conducted. A total of 737 patients attending the Infertility and IVF Unit at S.Orsola University Hospital (Italy) between October 2015 and April 2020 were randomly assigned to two groups. A total of 368 patients were assigned to group 1 (High-Security Vitrification™ - HSV) and 369 to group 2 (Cryotop® open system). Oocyte survival, fertilization, cleavage, pregnancy, implantation, and miscarriage rate were compared between the two groups. RESULTS: No statistically significant differences were observed on survival rate (70.3% vs. 73.3%), fertilization rate (70.8% vs. 74.9%), cleavage rate (90.6% vs. 90.3%), pregnancy/transfer ratio (32.0% vs. 31.8%), implantation rate (19.7% vs. 19.9%), nor miscarriage rates (22.1% vs. 21.5%) between the two groups. Women's mean age in group 1 (36.18 ± 3.92) and group 2 (35.88 ± 3.88) was not significantly different (P = .297). A total of 4029 oocytes were vitrified (1980 and 2049 in groups 1 and 2 respectively). A total of 2564 were warmed (1469 and 1095 in groups 1 and 2 respectively). A total of 1386 morphologically eligible oocytes were inseminated by intracytoplasmic sperm injection (792 and 594 respectively, P = .304). CONCLUSIONS: The present study shows that the replacement of the open vitrification system by a closed one has no impact on in vitro and in vivo survival, development, pregnancy and implantation rate. Furthermore, to ensure safety, especially during the current COVID-19 pandemic, the use of the closed device eliminates the potential samples' contamination during vitrification and storage.

Humane treatment versus means of control: coercive measures in Norwegian high-security psychiatry, 1895-1978.

This article analyses the use of coercive measures in two national institutions for high-security psychiatry in Norway - Kriminalasylet (Criminal Asylum) and Reitgjerdet - during the period 1895-1978. Historical study of coercion in psychiatry is a fruitful approach to new insight into the moral and ethical considerations within the institutions. We approach the topic through a qualitative study of patient case files and ward reports from the institutions' archives, as well as a comprehensive quantification of the coercive measures used. The data show shifting considerations of humane treatment and changes in the respect for human dignity in the institutions' practices. They also show that technological developments, such as the introduction of new psychopharmaceuticals, did not necessarily lead to higher standards of treatment.

Psychotropic prescribing in seriously violent men with schizophrenia or personality disorder in a UK high security hospital.

OBJECTIVES: To analyze antipsychotic prescribing patterns in a UK high security hospital (HSH) that treats seriously violent men with either schizophrenia or personality disorder and examine how different groups consented to treatment and prescribing for metabolic conditions. We hypothesized that there would be high prevalence of antipsychotic polypharmacy, and high-dose antipsychotic and clozapine prescribing. BACKGROUND: HSHs treat seriously violent, mentally disordered offenders, and the extant literature on prescribing patterns in forensic settings is sparse. METHODS: Prescribing and clinical data on all 189 patients in a UK HSH were collected from the hospital's databases. Data were analyzed using SPSS. RESULTS: The population was split into the following groups: schizophrenia spectrum disorder (SSD-only), personality disorder (PD-only), and comorbid schizophrenia spectrum disorder and PD. The majority (93.7%) of all patients were prescribed at least one antipsychotic, and (27.5%) were on clozapine. Polypharmacy was prevalent in 22.2% and high-dose antipsychotic in 27.5%. Patients on clozapine were more likely to be prescribed antidiabetic, statins, or antihypertensive medication. Patients in the PD-only group were more likely to be deemed to have the capacity to consent to treatment and be prescribed clozapine in contrast to the SSD-only group. CONCLUSIONS: Rates of clozapine and high-dose antipsychotic prescribing were higher than in other psychiatric settings, while polypharmacy prescribing rates were lower. Higher clozapine prescribing rates may be a function of a treatment-resistant and aggressive population. A higher proportion of PD-only patients consented to treatment and received clozapine compared with in-house SSD-only as well as other psychiatric settings. Implications of the findings are discussed.

New technologies in the management of risk and violence in forensic settings.

Novel technological interventions are increasingly used in mental health settings. In this article, we describe 3 novel technological strategies in use for management of risk and violence in 2 forensic psychiatry settings in the United Kingdom: electronic monitoring by GPS-based tracking devices of patients on leave from a medium secure service in London, and closed circuit television (CCTV) monitoring and motion sensor technology at Broadmoor high secure hospital. A common theme is the use of these technologies to improve the completeness and accuracy of data used by clinicians to make clinical decisions. Another common thread is that each of these strategies supports and improves current clinical approaches rather than drastically changing them. The technologies offer a broad range of benefits. These include less restrictive options for patients, improved accountability of both staff and patients, less invasive testing, improved automated record-keeping, and better assurance reporting. Services utilizing technologies need also be aware of limitations. Technologies may be seen as unduly restrictive by patients and advocates, and technical issues may reduce effectiveness. It is vital that the types of technological innovations described in this article should be subject to thorough evaluation that addresses cost effectiveness, qualitative analysis of patients' attitudes, safety, and ethical considerations.

PUFKEY: a high-security and high-throughput hardware true random number generator for sensor networks.

Random number generators (RNG) play an important role in many sensor network systems and applications, such as those requiring secure and robust communications. In this paper, we develop a high-security and high-throughput hardware true random number generator, called PUFKEY, which consists of two kinds of physical unclonable function (PUF) elements. Combined with a conditioning algorithm, true random seeds are extracted from the noise on the start-up pattern of SRAM memories. These true random seeds contain full entropy. Then, the true random seeds are used as the input for a non-deterministic hardware RNG to generate a stream of true random bits with a throughput as high as 803 Mbps. The experimental results show that the bitstream generated by the proposed PUFKEY can pass all standard national institute of standards and technology (NIST) randomness tests and is resilient to a wide range of security attacks.

Multilevel Information Encryption Based on Thermochromic Perovskite Microcapsules via Orthogonal Photic and Thermal Stimuli Responses.

Increasing modal variations of stimulus-responsive materials ensure the high capacity and confidentiality of information storage and encryption systems that are crucial to information security. Herein, thermochromic perovskite microcapsules (TPMs) with dual-variable and quadruple-modal reversible properties are designed and prepared on the original oil-in-fluorine (O/F) emulsion system. The TPMs respond to the orthogonal variations of external UV and thermal stimuli in four reversible switchable modes and exhibit excellent thermal, air, and water stability due to the protection of perovskites by the core-shell structure. Benefiting from the high-density information storage TPMs, multiple information encryptions and decryptions are demonstrated. Moreover, a set of devices are assembled for a multilevel information encryption system. By taking advantage of TPMs as a "private key" for decryption, the signal can be identified as the corresponding binary ASCII code and converted to the real message. The results demonstrate a breakthrough in high-density information storage materials as well as a multilevel information encryption system based on switchable quadruple-modal TPMs.

Hospital break. An eight-year review of escapes and absconds from two high security forensic centers.

BACKGROUND: Increasing freedom of movement and community reintegration is a vital part of recovery for forensic service users. Clinical teams realize that risk of unauthorized leave exists when granting leave, tasking them with balancing the recovery-based treatment needs of the patients with the larger obligation to protect the public from undue risk of harm. While considerable literature exists on unauthorized leave from acute psychiatric units, there is still little research specific to unauthorized leave from forensic settings. AIMS: The aim of this study is twofold. First, to examine the prevalence rates and characteristics of unauthorized leaves (i.e., absconds and escapes) among 654 high security forensic patients. Second, to identify individual patient factors associated with unauthorized leaves. A broad array of risk factors is taken into account, including demographic, clinical, judicial and criminal factors. PRINCIPAL RESULTS: During the 8-year period (17th of November 2014 until 17th of November 2022), there were 59 unauthorized leaves, which represents a very low percentage (0.2%) relative to the total number of leaves. Most patients returned to the hospital or were caught within one week. The reasons that led to an unauthorized leave were in more than half of the incidents frustration and in more than a third goal-directed. Only a minority of the unauthorized leaves was associated with subsequent offending, notwithstanding substance use was more frequent. Patients that absconded or escaped more often had a personality and comorbid substance misuse disorder, but less often a paraphilic disorder. They were younger, had more convictions and higher risk scores. After logistic regression, only personality disorder, comorbid substance misuse disorder and number of convictions were independently associated with unauthorized leave. CONCLUSIONS: The results of this study indicate that ULs occurred rarely, and in most instances, patients returned within a short period without further incidents. Personality disordered patients with comorbid substance misuse and prior convictions posed the greatest risk to abscond or escape. Overall, the rate of unauthorized leaves and subsequent offending was small relative to the total number of leaves. This suggests that the risk for absconding was assessed in an adequate manner by the clinical teams. The study hopefully adds to reducing the stigma towards leaves from forensic psychiatric hospitals.

Multiple-Channel Information Encryption Based on Quantum Dot Absorption Spectra.

Large-capacity information encryption has attracted significant interest in the information age. The diversity and controllability of spectra have positioned them to be widely applied for information encryption. Current spectra-based information encryption methods commonly rely on either spectral alteration induced by external stimuli or the utilization of narrowband channels within spectra. However, these methods encounter a common challenge in attaining both high security and large capacity simultaneously. To address these issues, we propose a multiple-channel information encryption system based on quantum dot (QD) absorption spectra. The diversity of QD absorption spectra and their broadband features ensure that the encrypted spectra can hardly be decrypted without knowing the correct channel matrix. Meanwhile, the large capacity is realized through the combination of multiple QD spectral channels with a theoretical maximum capacity of 24.0 bits in a single spectrum. In order to optimize the performance of our proposed system, the selection principle of the channel matrix is established to achieve the rapid identification of the optimal channel matrix in several milliseconds. The additivity of QD spectral channels and the consistency of QD spectra are also explored to minimize the impact of errors on information decryption. Furthermore, two spectral encryption scenarios of spatial pattern and spectral pattern are applied to demonstrate the feasibility, showcasing their ability to achieve both a high level of security and large capacity. Owing to the advantages offered by QD spectra, the QD spectra-based information system exhibits excellent potential for broader applications in information storage, authentication, and computing.

Perceiving violence against healthcare workers in a child and adolescent emergency psychiatric ward in Hungary: a qualitative pilot study.

Aim: Psychiatry is a challenging setting that requires extraordinary effort from the staff. Healthcare workers in the field of psychiatry face substantial levels of violence, making the identification of abuse risk factors a social concern. Both the conduct of the children and their relatives can pose potential harm. Our study delved into the criminological and psychiatric factors underlying violence against healthcare workers. Methodology: We used qualitative, semi-structured, self-developed, online questionnaire involving 21 respondents. The participants were representing the staff composition of our department. The data set was coded in two phases using a multi-stage content analysis method. The results were compared with Hungarian and international literature. Findings: Among the participants, 52% reported no instances of physical abuse. The most prevalent form of perceived non-contact abuse was threats, accounting for 38% of reported cases. The identified risk factors for abuse included the child's psychiatric disorder, communication issues, parental behavior, and low socio-economic status. Psychological trauma was identified as the most severe consequence. The respondents' opinion indicated that the most common cause of violence (52%) was attributed to the child's mental disorder. Workers primarily deal with abuse through negative emotions, with 76% of them reporting feelings of victimization. Additionally, 43% believed that abuse cannot be avoided, while 19% emphasized the significance of worker competence. Value: Our research can help to identify risk factors in child psychiatry wards and provide guidance for developing effective responses to violence against healthcare workers in Hungary, especially at our ward.

The use of coercive measures in a high security setting in Belgium: Prevalence and risk factors.

Coercive measures are often used in forensic psychiatric settings as a strategy to manage violent and other problematic behavior. Few studies have been published regarding the use of coercive measures in high security populations. This is the first empirical study on this subject in Belgium. The aim of the present study was to examine the prevalence rates of coercive measures in Flanders' two high security settings and to identify individual patient risk factors for being subjected to a coercive measure. The study included all patients (N = 654) who were admitted in the Forensic Psychiatric Centres of Antwerp or Ghent over a six-year period. Data on the use of coercive measures (seclusion, mechanical restraint, and chemical restraint) were registered prospectively. Several regression analyses were conducted with multiple independent variables. The results show that half of the population (50.3%) was subjected to at least one coercive measure during admission in one of the high security settings. A small subgroup of patients (6.4%) was the subject of half of all coercive measures (50,4%). Seclusion was the most frequently used coercive measure (48.3%), followed by chemical restraint (20.2%). The prevalence rate of mechanical restraint was very low (0.8%) compared to previous research in similar populations. Various individual risk factors were significantly associated with a higher use of coercive measures. Clinical implications are discussed and the importance of developing international standards on recording and reporting on coercive measures is highlighted.

High Security Settings in Flanders: An Analysis of Discharged and Long-Term Forensic Psychiatric Patients.

Background: Two Forensic Psychiatric Centres (FPC) were implemented the last decade in Flanders in Ghent (2014) and Antwerp (2017). FPCs are forensic institutions for forensic psychiatric patients with a high recidivism risk and a high security need. The objective of FPCs is to create a care process with sufficient flow (from high to lower forms of security), and transitions (from specialized forensic care to regular psychiatric care). Aims: To examine the characteristics of the high security population in FPCs, treatment length, number of discharges, and discharge locations and to determine the profile of long-term patients within an FPC. Methods: A retrospective file study of an admission cohort of 654 patients admitted to FPC Ghent or FPC Antwerp was conducted. Sociodemographic, clinical, judicial and risk characteristics were analyzed. Bivariate analyses were used to test the difference between two groups: the group that was discharged to a lower security level vs. the group of long-term patients. Results: Most patients had psychosis and personality disorders, while comorbidity was also high. Judicial histories were extensive, with many sexual index offenses. During a 6-year follow-up period, the number of referrals back to prison was low. Nearly a third of the population was discharged to a setting with a lower security level. Long-term patients typically presented with more personality disorders, higher psychopathy traits and higher risk scores and were more frequently subjected to coercive measures during treatment. Conclusions: The Flemish FPC population is characterized by a high proportion of sex offenders as well as a high proportion of personality-disordered patients. It is this last group, and the group with elevated psychopathy traits, who remain for longer than expected and is difficult to resocialize. This study further highlights the need for clear criteria to assess the conditions of these long-term patients in Flanders.

Security needs among patients referred for high secure care in Broadmoor Hospital England.

BACKGROUND: Security needs among patients referred to forensic mental health services have rarely been systematically studied. AIMS: To ascertain security needs among patients referred to a high secure hospital, Broadmoor High Secure Hospital, England. We also aimed to compare the security needs for those referred to mental illness services with those referred to personality disorder services in the hospital. METHOD: A retrospective complete cohort study of all referrals to Broadmoor Hospital over a 2-year period was conducted. All referred patients (n = 204) were assessed for need for high secure care by two Broadmoor clinicians. The final decision on need for admission was taken by a multidisciplinary admission panel. Independent of the panel, researchers rated need for security using the DUNDRUM-1 triage security scale. RESULTS: Those admitted to Broadmoor Hospital had higher triage security scores than those declined (F = 4.209, d.f. = 1, P = 0.042). Referrals to the personality disorder pathway had higher security needs than those referred to the mental illness pathway high secure service (F = 6.9835, d.f. = 1, P = 0.0089). Overall security needs among referrals to Broadmoor were extremely high, both by comparison with previous needs identified in UK medium secure services and international medium and high secure services. CONCLUSIONS: High secure patient cohorts represent a uniquely vulnerable group within mental health services, with extremely high security needs identified in this study. This has significant implications for services given the high levels of resources needed to provide therapeutically safe and secure care and treatment to this group.

Outcome measures of risk and recovery in Broadmoor High Secure Forensic Hospital: stratification of care pathways and moves to medium secure hospitals.

BACKGROUND: Placements within high secure forensic hospitals consist of wards providing various different levels of relational security. They should form a coherent pathway through secure care, based on individual patient risks and needs. Moves to less secure wards within high secure forensic hospitals and moves on to lower secure hospital settings have rarely been systematically studied. AIMS: The aim of this study was to ascertain if placements within Broadmoor High Secure Hospital and moves from Broadmoor to medium secure hospitals corresponded to measures of violence risk, programme completion and recovery. METHOD: A 13-month prospective cohort study was completed. Patients (n = 142) were rated at baseline for violence risk (Historical, Clinical and Risk - 20), therapeutic programme completion and recovery (DUNDRUM tool) and overall functioning (Global Assessment of Functioning). Placements on the care pathway and moves on to medium secure hospitals were observed. RESULTS: Placements on the care pathway within the high secure hospital were associated with dynamic violence risk (F = 16.324, P<0.001), therapeutic programme completion (F = 4.167, P = 0.003), recovery (F = 2.440, P = 0.050) with better scores on these measures being found in the rehabilitation wards and the poorest scores on the highest levels of dependency. Moves to medium secure hospitals were associated with better scores on dynamic risk of violence (F = 33.199, P<0.001), therapeutic programme completion (F = 9.237 P<0.001), recovery (F = 6.863, P = 0.001). CONCLUSIONS: Placements within Broadmoor Hospital formed a coherent pathway through high secure care. Moves to less secure places were influenced by more than reduction in violence risk. Therapeutic programme completion and recovery in a broad sense were also important.

Foreign National Patients in German Prison Psychiatry.

INTRODUCTION: Over the past few years, the share of foreign national prisoners in the European and American justice systems has increased at a disproportionately high rate, yet studies on mental health issues among this diverse group are rare. Recent research suggests a range of factors leading to mental health vulnerability in foreign national prisoners, including language barriers, isolation, cultural misunderstanding, and legal standing. Relevant findings of topic-related studies indicate that under-referral to mental health services due to missed or misinterpreted symptoms is a major risk for foreign national prisoners. AIMS: We aimed to investigate the disparities regarding the percentage of foreign national patients who were treated in high-security hospitals compared to the psychiatric ward of prison hospitals-after adjusting for diagnosis, age, marital status, and substance abuse. We hypothesized that foreign national patients were underrepresented in compulsory, high-security mental health care. We also aimed to explore citizenship-related institutional disparities concerning diagnoses and self-harmful behavior. METHOD: From 2010 to 2015, data collected from high-security hospitals in the federal state of Baden-Wurttemberg and the psychiatric ward of a Berlin prison hospital was evaluated by comparing nationality, diagnosis, and self-harm using Fisher's exact test and χ²-test. The odds ratios for citizenship-related differences in diagnosis and institution of treatment were evaluated by using logistic regression. RESULTS: Mentally ill foreign national patients were significantly less likely to be treated in high-security hospitals rather than prison hospital psychiatry (adjusted for diagnosis, age at admission, marital status, and substance abuse; adjusted OR = 0.5). Foreign nationals and Germans in prison hospital psychiatry showed no significant disparities in diagnosis; however, in high-security hospitals, foreign nationals were more likely to have been diagnosed with schizophrenia/psychotic or neurotic/stress-related disorders and were less likely to have been diagnosed with personality disorders than German patients. Additionally, foreign nationals were more likely to commit self-harm than Germans in prison hospital psychiatry, but significant citizenship-related differences could not be verified in high-security hospital patients. CONCLUSION: Treatment conditions of foreign national patients in prison psychiatry must be improved. To achieve this, the psychiatric assessment and (mental) health-related aspects of these patients should be further investigated.

Effectiveness of paliperidone depot injection in seriously violent men with comorbid schizophrenia and dissocial personality disorder in a UK high-security hospital.

BACKGROUND: High-security hospital patients are often complex in presentation and are characterized by treatment resistance, medication nonadherence and history of violence. Paliperidone is licensed both as an oral and depot antipsychotic medication in the treatment of schizophrenia. Clinical trials have shown that paliperidone depot is well tolerated with similar efficacy to risperidone depot but with additional practical advantages. Whilst data exist for the effectiveness of paliperidone palmitate (PP), there are no studies involving patients in forensic settings or those with comorbid personality disorder. Our aim was to evaluate the effectiveness of PP on violence, aggression and personality disorder symptoms. METHODS: This project was a retrospective service evaluation involving 11 patients, carried out in a high-security hospital. A combination of patient records and interviews with the treating consultant psychiatrist were used to ascertain a Clinical Global Impression (CGI) score, the effect of PP on specific personality disorder symptom domains (cognitive-perceptual, impulsive-behavioural dyscontrol and affective dysregulation) and incidents of violence and aggression. Engagement with occupational and psychological therapies was also evaluated. Metabolic parameters were reviewed. RESULTS: A total of 6 out of 11 patients continued on PP, most of whom had schizophrenia and dissocial personality disorder with histories of violence. All showed improvement in the CGI score with associated benefits in the three personality symptom domains. Overall, two patients demonstrated a reduction in the risk of violence. There was improvement in engagement with occupational therapy and psychological work. No significant effects on metabolic parameters were noted although hyperprolactinaemia, albeit asymptomatic, was consistently recorded. CONCLUSIONS: This pragmatic service evaluation of a small but complex patient group demonstrated, for the first time, that PP was effective in reducing violence as well as improving personality pathology across all dimensions: a finding which could have significant implications for management of such high-security patients.

Appeals against detention in excessive security (outcomes of appeals against detention in conditions of excessive security in Scotland).

The Mental Health (Care and Treatment) (Scotland) Act 2003 introduced the right for patients in high-security psychiatric care to appeal against detention in conditions of excessive security. A previous study examined the first 100 patients to appeal under this provision. In this study we compare them with the next cohort of 110 patients to lodge an appeal, finding, contrary to expectations, no change in patient characteristics or the outcome of their appeals. The clinical, legal and demographic features of successful and unsuccessful appellants, who made up 38% and 27% of the 110 patients, respectively, were also compared. Those patients with the support of their responsible medical officer and those already included on a transfer list had a significantly better chance of success (p = 0.00). It was also found that a history of excessive alcohol consumption was associated with successful appeals (p = 0.002). A diagnosis of learning disability was associated with unsuccessful appeals (p = 0.018), though the sub-sample was very small. These findings are important given the forthcoming extension of this right of appeal to other levels of security.

High-capacity and security molecular capsule transporters.

Multiwavelength optical capsules can be generated and controlled by using soliton/Gaussian pulses within a nonlinear device system known as a "PANDA" ring circuit and system. The security of molecule/drug transportation can be formed by the strong coupling of soliton-like pulse, where the high-capacity optical capsules can be formed using the multiwavelength solitons, which can be a good advantage and combination of drug delivery to the required targets. Moreover, the multiple access of drug delivery can be formed using the optical networks, which allows the use of various drug molecules with variety of diagnosis and therapeutic applications.

An evaluation of the use of olanzapine pamoate depot injection in seriously violent men with schizophrenia in a UK high-security hospital.

BACKGROUND: Oral olanzapine is a well-established treatment for patients suffering from schizophrenia. Advantages of depot olanzapine may include improved compliance. However, it is expensive, causes metabolic side effects, and carries a risk of postinjection syndrome. Clinical trials have shown olanzapine pamoate to be effective, but further work is needed in this area. This study was a retrospective service evaluation, carried out in a high-security hospital, where the majority of patients have complex, treatment resistant schizophrenia spectrum disorder and a very high propensity for violence. Compliance is a significant problem, both in the high-security setting and on discharge. There has been no previous published work that the authors are aware of evaluating the effects of olanzapine pamoate in this subgroup of patients. METHODS: The aim of the study was to evaluate the clinical efficacy of olanzapine pamoate, its effect on violence as well as its side effects, in a high-security setting for the first time. Anonymized patient records were used to identify the main outcome measure and clinical global improvement, and to ascertain secondary outcome measures which included seclusion hours, risk of violence and side effects. Metabolic parameters and number of incidents were also recorded. Eight patients were treated with olanzapine pamoate. RESULTS: Six showed an improvement in symptoms, with an associated decrease in violence and number of incidents. Four showed an associated decrease in seclusion hours. Two showed an increase in body mass index and two showed an increase in glucose. CONCLUSIONS: The findings of this study are important in showing that all patients who responded to olanzapine pamoate also showed a decrease in violent behaviour. The potential anti-aggression effects of olanzapine pamoate may represent a very promising area for further work. A depot antipsychotic medication that reduces violence could have significant implications for management of high-security patients.