Humans

Statins and cognitive decline in patients with Alzheimer's and mixed dementia: a longitudinal registry-based cohort study

Author/s: 
Bojana Petek, Henrike Häbel, Hong Xu, Marta Villa-Lopez, Irena Kalar, Minh Tuan Hoang, Silvia Maioli, Joana B Pereira, Shayan Mostafaei, Bengt Winblad, Milica Gregoric Kramberger, Maria Eriksdotter, Sara Garcia-Ptacek

Background
Disturbances in brain cholesterol homeostasis may be involved in the pathogenesis of Alzheimer’s disease (AD). Lipid-lowering medications could interfere with neurodegenerative processes in AD through cholesterol metabolism or other mechanisms.

Objective
To explore the association between the use of lipid-lowering medications and cognitive decline over time in a cohort of patients with AD or mixed dementia with indication for lipid-lowering treatment.

Methods
A longitudinal cohort study using the Swedish Registry for Cognitive/Dementia Disorders, linked with other Swedish national registries. Cognitive trajectories evaluated with mini-mental state examination (MMSE) were compared between statin users and non-users, individual statin users, groups of statins and non-statin lipid-lowering medications using mixed-effect regression models with inverse probability of drop out weighting. A dose-response analysis included statin users compared to non-users.

Results
Our cohort consisted of 15,586 patients with mean age of 79.5 years at diagnosis and a majority of women (59.2 %). A dose-response effect was demonstrated: taking one defined daily dose of statins on average was associated with 0.63 more MMSE points after 3 years compared to no use of statins (95% CI: 0.33;0.94). Simvastatin users showed 1.01 more MMSE points (95% CI: 0.06;1.97) after 3 years compared to atorvastatin users. Younger (< 79.5 years at index date) simvastatin users had 0.80 more MMSE points compared to younger atorvastatin users (95% CI: 0.05;1.55) after 3 years. Simvastatin users had 1.03 more MMSE points (95% CI: 0.26;1.80) compared to rosuvastatin users after 3 years. No differences regarding statin lipophilicity were observed. The results of sensitivity analysis restricted to incident users were not consistent.

Conclusions
Some patients with AD or mixed dementia with indication for lipid-lowering medication may benefit cognitively from statin treatment; however, further research is needed to clarify the findings of sensitivity analyses

Gold 2023: Highlights for Primary Care

Author/s: 
Alvar Agustí, Antoni Sisó-Almirall, Miguel Roman, Claus F. Vogelmeier

The Global Initiative for Chronic Obstructive Lung Disease (GOLD) has issued its 2023 annual report1. Compared with former versions, it has been significantly updated. Here, we summarize the most relevant changes for a Primary Care audience. The complete document can be downloaded for free from the GOLD web page (www.goldcopd.org), together with a “pocket guide” and a “teaching slide set”.

Diagnosis and management of depression in adolescents

Author/s: 
Korczak, D. J., Westwell-Roper, C., Sassi, R.

Depression is common among adolescents in Canada and has the potential to negatively affect long-term function and quality of life; despite this, in most affected adolescents depression remains undetected and untreated.

Management requires a multimodal approach, including risk assessment, psychoeducation, psychotherapeutic and pharmacologic treatment, and interventions to address contributing factors.

Support from child and adolescent psychiatrists may be required in the case of diagnostic uncertainty and complex presentations, as well as for patients who do not respond to first-line treatments.

A pragmatic approach to the management of menopause

Author/s: 
Lega, I. C., Fine, A., Antoniades, M. L., Jacobson, M.

Menopause is defined as 1 year of amenorrhea caused by
declining ovarian reserve or as the onset of vasomotor
symptoms in people with iatrogenic amenorrhea. It is preceded
by perimenopause or the menopause transition, which can last
for as long as 10 years. Although many treatments exist for
menopausal symptoms, fears around the risks of menopausal
hormone therapy and lack of knowledge regarding treatment
options often impede patients from receiving treatment. In this
review, we summarize the evidence for treating menopausal
symptoms and discuss their risks and benefits to help guide
clinicians to evaluate and treat patients during the menopausal
transition (Box 1).
• Menopausal symptoms can occur for as long as 10 years before
the last menstrual period and are associated with substantial
morbidity and negative impacts on quality of life.
• Menopausal hormone therapy is indicated as first-line
treatment of vasomotor symptoms, and is a safe treatment
option for patients with no contraindications.
• Though less effective, nonhormonal treatments also exist to
treat vasomotor symptoms and sleep disturbances.
• It is critical that clinicians inquire about symptoms during the
menopause transition and discuss treatment options with
their patients.

Sleep as a vital sign

Author/s: 
Hirschtritt, M.E., Walker, M. P., Krystal, A.D.

Sleep is causally linked to the maintenance of every major physiological body system and disturbed sleep contributes to myriad diseases. The problem is, however, is that patients do not consistently, nor spontaneously, report sleep problems to their clinicians. Compounding the problem, there is no standard-of-care approach to even the most rudimentary of sleep queries. As a result, sleep disturbances remain largely invisible to most clinicians, and consequentially, unaddressed for the patient themselves – thereby exacerbating physical and mental health challenges due to unaddressed sleep problems. In this review, we argue that all patients should be routinely screened with a short, readily available, and validated assessment for sleep disturbances in clinical encounters. If the initial assessment is positive for any subjective sleep-related problems, it should prompt a more thorough investigation for specific sleep disorders. We further describe how a program of short and simple sleep health screening is a viable, efficacious yet currently missing pathway through which clinicians can 1) screen for sleep-related problems, 2) identify patients with sleep disorders, 3) rapidly offer evidence-based treatment, and (if indicated) 4) refer patients with complex presentations to sleep medicine specialists.

Foreign body aspiration in children

Author/s: 
Hutchinson, K. A., Turkdogan, S., Nguyen, L. H. P.

In Canada, choking or suffocation accounts for about 40% of unintentional deaths among children younger than 1 year.
Round and cylindrical food or other foreign bodies (e.g., hot dogs, sausages, grapes, marbles) pose the greatest risk. Uninflated balloons are hazardous owing to their ability to form a complete seal of the airway.

Foreign body aspiration in children

Author/s: 
Hutchinson, K. A., Turkdogan, S., Nguyen, L. H. P.

In Canada, choking or suffocation accounts for about 40% of unintentional deaths among children younger than 1 year.
Round and cylindrical food or other foreign bodies (e.g., hot dogs, sausages, grapes, marbles) pose the greatest risk. Uninflated balloons are hazardous owing to their ability to form a complete seal of the airway.

Diagnosis and management of patients with polyneuropathy

Author/s: 
Mirian, A., Aljohani, Z., Grushka, D., Florendo-Cumbermack, A.

Polyneuropathy is a common neurologic condition with an overall prevalence in the general population of about 1%–3%, increasing to roughly 7% among people older than 65 years. Polyneuropathy has many causes, and can present in many different ways; thus, it requires a logical clinical approach for evaluation, diagnosis and management. We review the approach to evaluating a patient with polyneuropathy by highlighting important aspects of the history and neurologic examination. We focus on the role of diagnostic investigations for distal symmetric polyneuropathy (DSP), the most common subtype, and an approach to the symptomatic treatment of painful diabetic polyneuropathy (PDN). We draw on practice based guidelines, meta-analyses and systematic reviews, where
possible, as they represent the highest levels of evidence (Box 1).

Diagnosis and acute management of migraine

Author/s: 
Tzankova, V., Becker, W. J., Chan, T. L. H.

Migraine is a leading cause of disability across all age groups.
• Routine imaging is not recommended in patients with migraine
who have no red flags, atypical symptoms or abnormal findings
on neurologic examination.
• A stratified approach for acute migraine treatment empowers
patients to choose from different treatment options
depending on attack symptoms and severity and encourages
patients to combine medications from different classes.
• Effective acute migraine treatment includes acetaminophen,
nonsteroidal anti-inflammatory drugs and triptans.
• Ubrogepant and rimegepant are new, effective migraine
treatments, suitable for patients with cardiovascular disease in
whom triptans are contraindicated.

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