Medications with anticholinergic properties are associated with a range of adverse effects that tend to be worse in older people.

To investigate medication regimens with high anticholinergic burden, prescribed for older adults under the care of mental health services.

Clinical audit of prescribing practice, using a standardised data collection tool.

Fifty-seven trusts/healthcare organisations submitted data on medicines prescribed for 7915 patients: two-thirds (66%) were prescribed medication with anticholinergic properties, while just under a quarter (23%) had a medication regimen with high anticholinergic burden (total score ≥3 on the anticholinergic effect on cognition (AEC) scale). Some 16% of patients with a diagnosis of dementia or mild cognitive impairment were prescribed medication regimens with a high anticholinergic burden, compared with 35% of those without such diagnoses. A high anticholinergic burden was mostly because of combinations of commonly prescribed psychotropic medications, principally antidepressant and antipsychotic medications with individual AEC scores of 1 or 2.

Adults under the care of older people's mental health services are commonly prescribed multiple medications for psychiatric and physical disorders; these medication regimens can have a high anticholinergic burden, often an inadvertent consequence of the co-prescription of medications with modest anticholinergic activity. Prescribers for older adults should assess the anticholinergic burden of medication regimens, assiduously check for adverse anticholinergic effects and consider alternative medications with less anticholinergic effect where indicated. The use of a scale, such as the AEC, which identifies the level of central anticholinergic activity of relevant medications, can be a helpful clinical guide.

Adverse effects are a common concern when prescribing and reviewing medication, particularly in vulnerable adults such as older people and those with intellectual disability. This paper describes the development of an app giving information on side-effects, called Medichec, and provides a description of the processes involved in its development and how drugs were rated for each side-effect. Medications with central anticholinergic action, dizziness, drowsiness, hyponatraemia, QTc prolongation, bleeding and constipation were identified using the British National Formulary (BNF) and frequency of occurrence of these effects was determined using the BNF, product information and electronic searches, including PubMed.

Medications were rated using a traffic light system according to how commonly the adverse effect was known to occur or the severity of the effect.

Medichec can facilitate access to side-effects information for multiple medications, aid clinical decision-making, optimise treatment and improve patient safety in vulnerable adults.

Anticholinergic syndrome (AS) is a complication that can appear due to different drugs with antimuscarinic effects, such as antihistamines, alkaloids, antipsychotics, tricyclic antidepressives or anesthetics, and it is characterized by urinary retention, dry mouth and skin, mydriasis, low-grade fever, and confusion or coma.

To describe a clinical case of AS admitted to our hospital.

We present a case report of a patient with schizophrenia who presented an anticholinergic syndrome. We also searched for previous studies of AS using a pubmed query.

A 53-year-old male was admitted for a psychotic decompensation to another hospital in Barcelona. The usual treatment at home was amisulpride 1200mg/d, olanzapine 30mg/d and lormetazepam, and haloperidol 6mg/d and clotiapine 40mg/d were added to treat the decompensation. Then, the patient started to present mydriasis, mucocutaneous dryness, low-grade fever, slight hypertension and tachycardia, repeated retentions of urine, confusion, unintelligible speech and agitation, so he was referred to our hospital. Once he was admitted, haloperidol was withdrawn and support measures (bladder catheterization, fluid therapy, etc.) were applied. After a few days, most of the mentioned alterations were stabilized, but the psychotic symptoms, such as thought and behavioural disorganization, persisted and required electroconvulsive therapy, with subsequent improvement.

AS is a relatively frequent side effect of psychiatric medication, which diagnosis is clinical, so, we must be capable to identify it and initiate early treatment to prevent possible complications. The first step, as reflected in the case described, is to stop the causative drugs, and apply support measures. Additionally, physostigmine can be used, as it is an effective antidote.

No significant relationships.

Ischemic colitis (IC) is a rare condition due to hypoperfusion in the large intestine. Usually the etiology is unidentified, but many drugs are known to induce it because of their anticholinergic effects. We present the case of a 63-year-old woman, with the diagnosis of histrionic personality disorder, in treatment with quetiapine and venlafaxine. She attended the hospital due to diffuse abdominal pain, diarrhea and hematochezia in the last two days. An abdominal CT scan is made, showing parietal thickening and submucosal edema in the colon, without any tumoral findings, suggesting IC.

To point up the correlation between IC and the intake of psychotropic drugs.

We conducted a narrative review of the literature through the presentation of a case. Articles were selected based on their clinical relevance.

There are reported cases of IC related to antipsychotics, but any drug with anticholinergic effects can potentially cause it. Anticholinergics reduce intestinal motility, leading to colonic ileus and dilatation. Both quetiapine and venlafaxine, taken by the patient, have these effects. Common obstructive and non-obstructive processes are excluded due to the absence of any other pathological signs. For these reasons, the diagnosis of IC secondary to treatment with quetiapine and venlafaxine is made.

Many psychotropic drugs can produce IC owing to their anticholinergic effects, being this chance increased when taken simultaneously with other drugs with same effects. IC is a rare but fatal side effect, which makes it important to consider it in the differential diagnosis in patients in treatment with psychotropics who suffer from gastrointestinal symptoms.

No significant relationships.

Few studies have explored whether high-anticholinergic load may hamper rehabilitation in persons with schizophrenia. We aim to explore the associations between anticholinergic load of psychotropic treatment and functioning or cognitive performances of persons with psychosis engaged in psychosocial rehabilitation.

The study was performed using data collected at baseline assessment in the REHABase cohort including persons referred to a French network of psychosocial rehabilitation centers. The composite-rating scale developed by Salahudeen et al. was used to rate the anticholinergic load of psychotropic drugs prescribed at baseline assessment. The associations between total anticholinergic load score (categorized as ‘low’ <3 v. ‘high’ ⩾3) and functioning or cognitive characteristics were explored using multivariate analyses.

Of the 1012 participants with schizophrenia spectrum disorders identified in the REHABase, half used at least two psychotropic drugs with anticholinergic activity and one out of three was prescribed at least one psychotropic drug with high-anticholinergic activity. High-anticholinergic load was significantly associated with lower stage of recovery [odds ratio (OR) = 1.70, 95% confidence interval (CI) 1.05–2.76, p = 0.03], poor mental well-being (OR = 1.55, 95% CI 1.02–2.33, p = 0.04) and poor self-rated medication adherence (OR = 2.14, 95% CI 1.29–3.53, p = 0.003). Regarding cognition, a high-anticholinergic score was associated with poorer delayed-episodic memory (OR = 1.69, 95% CI 1.01–2.85, p = 0.05) and at the trend level with faster completion time on the test exploring executive performance (OR = 0.67, 95% CI 0.43–1.04, p = 0.07).

The psychosocial rehabilitation plan of persons with psychosis should integrate optimization of psychotropic treatment in order to lessen the functional and cognitive impact of high-anticholinergic load.

Older adults with dementia are particularly vulnerable to adverse outcomes resulting from anticholinergic use. We aimed to: (i) Examine the anticholinergic burden of patients with dementia attending a Psychiatry of Later Life (PLL) service (ii) Examine concomitant prescription of acetylcholinesterase inhibitors (AChEIs) and anticholinergics and (iii) Compare the Anticholinergic Cognitive Burden (ACB) scale with a recently published composite list of anticholinergics.

Retrospective chart review of new referrals with a diagnosis of dementia (n = 66) seen by the PLL service, Tallaght University Hospital, Dublin, Ireland, over a consecutive period of 4 months.

The mean ACB score was 2.2 (range = 0–9, SD = 2.1). 37.9% (n = 25) had a clinically significant ACB score (>3) and 42.1% (n = 8) of those taking AChEIs had a clinically significant ACB score. A significantly greater number of medications with anticholinergic activity were identified using the composite list versus the traditional ACB scale (2.3 v.1.5, p = 0.001).

We demonstrated a significant anticholinergic burden amongst patients with dementia attending a specialist PLL service. There was no difference in anticholinergic burden between groups prescribed and not prescribed AChEIs, indicating that these medications are being prescribed without discontinuation of potentially inappropriate medications with anticholinergic activity. The true anticholinergic burden experienced by patients may be underestimated by the use of the ACB score alone, although the clinical significance of this finding is unclear. Calculation of true clinical anticholinergic burden load and its translation to a specific rating scale remains a challenge.

Cognitive deficits are a core feature of early stages in schizophrenia. However, the extent to which antipsychotic (AP) have a deleterious effect on cognitive performance remains under debate. We aim to investigate whether anticholinergic loadings and dose of AP drugs in first episode of psychosis (FEP) in advanced phase of remission are associated with cognitive impairment and the differences between premorbid intellectual quotient (IQ) subgroups.

Two hundred and sixty-six patients participated. The primary outcomes were cognitive dimensions, dopaminergic/anticholinergic load of AP [in chlorpromazine equivalents (Eq-CPZ) and the Anticholinergic Risk Scale (ARS), respectively].

Impairments in processing speed, verbal memory and global cognition were significantly associated with high Eq-CPZ and verbal impairment with high ARS score. Moreover, this effect was higher in the low IQ subgroup.

Clinicians should be aware of the potential cognitive impairment associated with AP in advanced remission FEP, particularly in lower premorbid IQ patients.

Heat stroke is a medical emergency. Psychiatric patients are particularly susceptible to heat stroke. Therefore, awareness and preventive measures of heat stroke are important for both clinicians and patients.

A 49-year-old man with schizophrenia, who was under maintenance treatment with olanzapine 20 mg/day, trihexyphenidyl 4 mg/day, and trazodone 50 mg/day, suffered from heat stroke in a heat wave and required intensive care. He recovered with the medical treatment provided.

Several factors could have contributed to the impaired thermoregulation and the occurrence of heat stroke in this case: schizophrenia, the psychotropic regimen, and lack of preventive measures. Possible differential diagnoses of heat stroke in this case include infection, neuroleptic malignant syndrome, and serotonin syndrome.

Heat stroke can occur during the maintenance treatment of olanzapine, trihexyphenidyl, and trazodone for schizophrenia. Clinicians should be proactive to reduce the risk of heat stroke in psychiatric patients.