Ziprasidone is widely used in the treatment of psychiatric disorders. Despite its prevalence, there is a notable lack of population pharmacokinetics (PPK) studies on ziprasidone in serum, both domestically and internationally. This study aimed to comprehensively investigate the various factors influencing the PPK characteristics of Ziprasidone, thereby providing a scientific basis for personalized treatment strategies in clinical settings. This is a retrospective study. A non-linear mixed-effects modeling method was used for data analysis, with the ziprasidone PPK model established using the Phoenix NLME 8.1 software. Model evaluation employed goodness-of-fit plots, visual predictive checks, and Bootstrap methods to ensure reliability and accuracy. To further validate the model\'s applicability, data from an additional 30 patients meeting the same inclusion criteria but not included in the final model were collected for external validation. Simulations were performed to explore the personalized dosage regimens. This retrospective analysis collected 547 drug concentration data points from 185 psychiatric disorder patients, along with related medical records. The data included detailed demographic information (such as age, gender, weight), dosing regimens, laboratory test results, and concomitant medication details. In the final model, Ka was fixed at 0.5 h-1 based on literature, and the population typical values for ziprasidone clearance (CL) and volume of distribution (V) were 18.74 L/h and 110.24 L, respectively. Co-administration of lorazepam and valproic acid significantly influenced the clearance of ziprasidone. Moreover, the model evaluation indicated good stability and predictive accuracy. A simple to use dosage regimen table was derived based on the results of simulations. This study successfully established and validated a PPK model for ziprasidone in Chinese patients with psychiatric disorders. The model provides a scientific reference for individualized dosing of ziprasidone and holds the potential to optimize treatment strategies, thereby enhancing therapeutic efficacy and safety.

UNASSIGNED: Catatonia is a syndrome characterized by psychomotor and behavioral disturbances and is associated with a substantially increased mortality risk in adolescent patients. There is a dearth of published literature describing treatment strategies for pediatric patients with catatonia. This dual-case series will describe the treatment course of 2 adolescent patients with catatonia at our pediatric inpatient psychiatric facility.
UNASSIGNED: This case series presents 2 adolescent patients (a 17-year-old male and a 16-year-old female) who initially presented with worsening agitation and paranoia, later developing catatonia. Both patients required long durations of hospitalization and were treated with high-dose lorazepam before requiring the addition of electroconvulsive therapy (ECT).
UNASSIGNED: Treatment of pediatric patients with catatonia creates a significant burden on patients, families, and the healthcare system. Treatment with high-dose benzodiazepines is high risk, while ECT is both difficult to access and comes with its own risks. Both patients discussed are transitional age, meaning they will soon be young adults who will continue to require high-level psychiatric care. Psychiatric pharmacists have a large role to play in ensuring safe medication management for these complex patients.
UNASSIGNED: This case series of 2 adolescent patients with catatonia demonstrates marginal reduction in symptoms with high-dose lorazepam in conjunction with ECT, with minimal side effects. This case series adds to the limited available literature regarding treatment of catatonia in pediatric patients and highlights the need for further study into effective treatment alternatives.

Catatonia is a complex syndrome with unique cognitive, psychomotor, and mood features. Mannerisms and stereotypies are catatonic signs that have been extensively observed and described in the literature, mostly in the context of movements or motor acts. Stereotypies are commonly described as repetitive psychomotor or verbal acts with the abnormality not inherent in the act but in its frequency. Mannerisms, like stereotypies, are repetitive psychomotor or verbal acts, but they are fundamentally odd in nature. Recently, several reports have described these phenomena in the context of complex behaviors, such as eating and drinking. Identification and appreciation of personal and cultural norms, in addition to a careful analysis of behavioral processes and actions, are important tools for clinicians to identify these potentially elusive and often missed patterns of behavior in patients with catatonia. We present the case of a 30-year-old male with a psychiatric history of treatment-resistant, recurrent major depressive disorder with psychotic features who presented to the inpatient psychiatric unit with signs of catatonia, including repeated, purposeless eating. The patient\'s chart was reviewed, and a literature review was conducted using PubMed with the keywords catatonia, stereotypies, mannerisms, and hyperphagia. The patient, who was diagnosed with catatonia and expressed hyperphagia as a stereotypy, responded to lorazepam. This case shows that hyperphagia may present as a stereotypy in patients with catatonia.

Coronavirus disease 2019 (COVID-19) creates acute and long-lasting infection which results in respiratory, cardiovascular, and neuropsychiatric problems. Etiology of neuropsychiatric manifestations can be associated with immune system response, inflammatory cytokines, and also the stressors which are experienced by patients as feeling the risk of being infected by the virus, economic problems, and social distancing. We aimed to present a case of a 53-year-old patient whose suicide note was found and was admitted with depressive and catatonic symptoms 8 weeks after the recovery from COVID-19. Catatonia was suspected, and he was given lorazepam 1 mg. Shortly thereafter, he was entirely alert, cooperative, and oriented. As an advantage of this case, the patient in our report had not used medications for COVID-19 and so we could exclude the effect of medications to the pathophysiology of post- coronavirus disease symptoms. A wide spectrum of neuropsychiatric manifestations was observed in terms of diagnosis after COVID-19. Catatonia can break out in the post-infectious period as well as in the para-infectious period. There are limitations to figure out the direct invasion of coronavirus and the effect of the systemic inflammation to the central nervous system. Nevertheless, it should be considered that catatonia may be one of the clinical results of COVID-19.

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UNASSIGNED: Dysfunctional sensory gating in anxiety disorders, indexed by the failure to inhibit the P50 event-related potential (ERP) to repeated stimuli, has been linked to deficits in the major inhibitory neurotransmitter γ-aminobutyric acid (GABA).
UNASSIGNED: This study, conducted in 30 healthy volunteers, examined the acute effects of GABAA (lorazepam: 1 mg) and GABAB receptor (baclofen: 10 mg) agonists on P50 measures of auditory sensory gating within a paired-stimulus (S1-S2) paradigm and assessed changes in gating in relation to self-ratings of anxiety.
UNASSIGNED: Compared to placebo, lorazepam reduced ERP indices of sensory gating by attenuating response to S1. Although not directly impacting P50 inhibition, baclofen-induced changes in gating (relative to placebo) were negatively correlated with trait but not state anxiety.
UNASSIGNED: These preliminary findings support the involvement of GABA in sensory gating and tentatively suggest a role for GABAB receptor signaling in anxiety-associated gating dysregulation.

BACKGROUND: Seizure clusters, prolonged seizures, and status epilepticus are life-threatening neurological emergencies leading to irreversible neuronal damage. Benzodiazepines are current evidence-based rescue therapy options; however, recent investigations indicated the prescription of mainly unsuitable benzodiazepines and inappropriate use of rescue medication.
OBJECTIVE: To examine current use, satisfaction, and adverse events concerning rescue medication in patients with epilepsy in Germany.
METHODS: The study was conducted at epilepsy centres in Frankfurt am Main, Greifswald, Marburg, and Münster between 10/2020 and 12/2020. Patients with an epilepsy diagnosis were assessed based on a questionnaire examining a 12-month period.
RESULTS: In total, 486 patients (mean age: 40.5, range 18-83, 58.2 % female) participated in this study, of which 125 (25.7 %) reported the use of rescue medication. The most frequently prescribed rescue medications were lorazepam tablets (56.8 %, n = 71 out of 125), buccal midazolam (19.2 %, n = 24), and rectal diazepam (10.4 %, n = 13). Seizures continuing for over several minutes (43.2 %, n = 54), seizure clusters (28.0 %, n = 35), and epileptic auras (28.0 %, n = 35) were named as indications, while 28.0 % (n = 35) stated they administered the rescue medication for every seizure. Of those continuing to have seizures, 46.0 % did not receive rescue medication. On average, rescue medication prescription occurred 7.1 years (SD 12.7, range 0-66) after an epilepsy diagnosis.
CONCLUSIONS: Unsuitable oral benzodiazepines remain widely prescribed for epilepsy patients as rescue medication. Patients also reported inappropriate use of medication. A substantial proportion of patients who were not seizure-free did not receive rescue medication prescriptions. Offering each patient at risk for prolonged seizures or clusters of seizures an individual rescue treatment with instructions on using it may decrease mortality and morbidity and increase quality of life. .

OBJECTIVE: To observe the efficacy of acupuncture for reducing the south to reinforce the north on executive function, sleep structure and sleep quality in patients with chronic insomnia disorder of heart-kidney disharmony.
METHODS: A total of 100 patients with chronic insomnia disorder of heart-kidney disharmony were randomized into an acupuncture group (50 cases, 1 case dropped out) and a western medication group (50 cases, 2 cases dropped out). Acupuncture for reducing the south to reinforce the north was applied at Baihui (GV 20) and bilateral Shenmen (HT 7), Sanyinjiao (SP 6), Shenmai (BL 62), Zhaohai (KI 6), Xinshu (BL 15), Shenshu (BL 23) in the acupuncture group, once a day, 5 days a week. Lorazepam tablet was given orally in the western medication group, 0.5-1 mg a time, once a day. Both groups were treated for 4 weeks. The Stroop color-word test (SCWT) indexes (the time consuming and the correct number of card A, B, C and the Stroop interference effect [SIE]), sleep structure indexes (total sleep time [TST], sleep latency [SL], wake after sleep onset [WASO], sleep efficiency [SE], non-rapid eye movement period 1 [N1], non-rapid eye movement period 2 [N2], non-rapid eye movement period 3 [N3], rapid eye movement period [REM]) and Pittsburgh sleep quality index (PSQI) score were observed before and after treatment in the two groups.
RESULTS: After treatment, the time consuming of card B and C, the time consuming and the correct number of SIE, SL, WASO, N1, N2, as well as the sub-item scores and total score of PSQI were decreased (P<0.05, P<0.01), the correct number of card A, B and C, TST, SE, N3 and REM were increased (P<0.01) compared with those before treatment in the acupuncture group; the time consuming of card C and SIE, the correct number of card A and SIE, TST, SE, REM were increased (P<0.05, P<0.01), SL, WASO, N1, as well as the sub-item scores of sleep quality, sleep latency, sleep duration, sleep efficiency, daytime function and total score of PSQI were decreased (P<0.01) compared with those before treatment in the western medication group. After treatment, in the acupuncture group, the time consuming of card C, the time consuming and the correct number of SIE, N1, N2, as well as the sub-item scores of sleep quality, sleep dysfunction, daytime function and total score of PSQI were lower than those in the western medication group (P<0.01), the correct number of card B and C, N3, REM were higher than those in the western medication group (P<0.01).
CONCLUSIONS: Acupuncture for reducing the south to reinforce the north can improve the executive function of patients with chronic insomnia disorder of heart-kidney disharmony, adjust the sleep structure, and improve the night sleep quality and daytime body function.
目的: 观察泻南补北法针刺对心肾不交型慢性失眠障碍患者执行功能、睡眠结构及睡眠质量的影响。方法: 将100例心肾不交型慢性失眠障碍患者随机分为针刺组（50例，脱落1例）和西药组（50例，脱落2例）。针刺组施泻南补北法针刺（穴取百会及双侧神门、三阴交、申脉、照海、心俞、肾俞，每日1次，每周5 d），西药组予口服劳拉西泮片（每次0.5~1 mg，每日1次），两组均治疗4周。分别于治疗前后观察两组患者Stroop色词测验（SCWT）指标［卡片A、B、C耗时数和正确数，Stroop干扰量（SIE）耗时数和正确数］、睡眠结构指标［总睡眠时间（TST）、睡眠潜伏期（SL）、入睡后清醒时间（WASO）、睡眠效率（SE）、非快速眼球运动1期（N1）、非快速眼球运动2期（N2）、非快速眼球运动3期（N3）、快速眼球运动期（REM）］及匹兹堡睡眠质量指数（PSQI）评分。结果: 治疗后，针刺组卡片B耗时数、卡片C耗时数、SIE耗时数、SIE正确数、SL、WASO、N1、N2、PSQI各项评分及总分较治疗前减少（P<0.05，P<0.01），卡片A正确数、卡片B正确数、卡片C正确数、TST、SE、N3、REM较治疗前增加（P<0.01）；西药组卡片C耗时数、SIE耗时数、卡片A正确数、SIE正确数、TST、SE、REM较治疗前增加（P<0.05，P<0.01），SL、WASO、N1较治疗前减少（P<0.01），PSQI睡眠质量、入睡时间、睡眠时间、睡眠效率、日间功能评分及总分较治疗前减少（P<0.01）。治疗后，针刺组卡片C耗时数、SIE耗时数、SIE正确数、N1、N2低于西药组（P<0.01），PSQI睡眠质量、睡眠障碍、日间功能评分及总分低于西药组（P<0.01），卡片B正确数、卡片C正确数、N3、REM高于西药组（P<0.01）。结论: 泻南补北法针刺可改善心肾不交型慢性失眠障碍患者的执行功能，调节其睡眠结构，并提高其夜间睡眠质量、日间机体功能。.

BACKGROUND: Anxiety disorders are highly prevalent and socio-economically costly. Novel pharmacological treatments for these disorders are needed because many patients do not respond to current agents or experience unwanted side effects. However, a barrier to treatment development is the variable and large placebo response rate seen in trials of novel anxiolytics. Despite this, the mechanisms that drive placebo responses in anxiety disorders have been little investigated, possibly due to low availability of convenient experimental paradigms. We aimed to develop and test a novel protocol for inducing placebo anxiolysis in the 7.5% CO2 inhalational model of generalized anxiety in healthy volunteers.
METHODS: Following a baseline 20-minute CO2 challenge, 32 healthy volunteers were administered a placebo intranasal spray labelled as either the anxiolytic \"lorazepam\" or \"saline.\" Following this, participants surreptitiously underwent a 20-minute inhalation of normal air. Post-conditioning, a second dose of the placebo was administered, after which participants completed another CO2 challenge.
RESULTS: Participants administered sham \"lorazepam\" reported significant positive expectations of reduced anxiety (P = .001), but there was no group-level placebo effect on anxiety following CO2 challenge post-conditioning (Ps > .350). Surprisingly, we found many participants exhibited unexpected worsening of anxiety, despite positive expectations.
CONCLUSIONS: Contrary to our hypothesis, our novel paradigm did not induce a placebo response, on average. It is possible that effects of 7.5% CO2 inhalation on prefrontal cortex function or behavior in line with a Bayesian predictive coding framework attenuated the effect of expectations on subsequent placebo response. Future studies are needed to explore these possibilities.

UNASSIGNED: Catatonia has been increasingly associated with mood disorders and is recognized as a specifier in the DSM-5 and DSM-5-TR. The DSM-5-TR recognizes melancholia as a specifier for depressive episodes in major depressive disorder and bipolar disorder. It is characterized by severe anhedonia, lack of reactivity, excessive or delusional guilt, and significant vegetative symptoms. As the conceptualization of melancholia expanded beyond its mood components to include psychomotor disturbances, its overlap with psychomotor symptoms or catatonia becomes evident. This overlap was also described in Kahlbaum\'s original literature, where he describes the transition between states of melancholia, mania, and catatonia.
UNASSIGNED: Case summary of six patients with major depressive disorder or depressed phase of bipolar disorder who were admitted for severe depression, anhedonia, intense anxiety, psychomotor agitation or retardation, indecisiveness, perseveration, and vegetative symptoms such as poor sleep, appetite, and significant weight loss.
UNASSIGNED: All patients demonstrated rapid and complete resolution of their mood and psychomotor symptoms, indecisiveness, perseveration, as well as psychosis shortly after administration of lorazepam, with recurrence of the above symptoms upon lorazepam discontinuation and resolution upon resumption, in an on-and-off manner.
UNASSIGNED: The present study argues for a closer relationship between melancholia and catatonia based on our case series, historical review, overlap in phenomenology, and response to treatment. We propose provisional [Mahgoub] criteria for patients with severe depression and melancholia. The role of GABA agonists, such as lorazepam, can be explored as an option for patients with treatment-resistant depression who meet these criteria for melancholia.
UNASSIGNED: Absence of a standardized, systematic assessment tool and a small sample size.