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Post-traumatic stress disorder, anxiety, and depression symptoms in healthcare workers during COVID-19 pandemic in Colombia

Background

Mental health outcomes in healthcare workers (HCWs) in low- and middle-income countries (LMICs) have been poorly explored during COVID-19 pandemic. Our aim was to carry out a cross-sectional study of the prevalence of mental health symptoms in HCWs in Colombia.

Methods

A cross-sectional web-survey study was performed during the COVID-19 pandemic mid-2021 including HCWs in two hospitals in Colombia. The PCL-5, GAD-7, and PHQ-9 scales were used to assess the prevalence of symptoms and severity of PTSD, anxiety, and depression in Colombia.

Results

From 257 surveyed respondents, 44.36% were nurses, 36.58% physicians and 19.07% other health professionals. The prevalence of PTSD, anxiety, and depressive symptoms were 18.68%, 43.19%, and 26.85%, amongst HCWs. The regression model evidence a strong risk of PTSD, anxiety, and depressive symptoms in HCWs in Colombia during the second wave of COVID-19 in the middle of 2021.

Conclusions

The prevalence for several mental health symptoms in HCWs in Colombia were higher compared with the general population. HCWs are at-risk population to develop chronic symptoms and mental disorders during and after outbreaks. These results will be helpful to tailor strategies to support the physical and mental health of the HCWs in LMICs.

The DRD2 Taq1A polymorphism moderates the effect of PTSD symptom severity on the left hippocampal CA3 volume: a pilot study

RATIONALE AND OBJECTIVES

The hippocampus, especially the CA1, CA3, and dentate gyrus (DG) subfields, is reported to be associated with post-traumatic stress disorder (PTSD) after trauma. However, neuroimaging studies of the associations between PTSD and hippocampal subfield volumes have failed to yield consistent findings. The aim of this study is to examine whether the dopamine D2 receptor (DRD2) Taq1A polymorphism, which is associated with both hippocampal function and PTSD, moderated the association between PTSD severity and hippocampal CA1, CA3 and DG volumes.

METHODS

T1-weighted images were acquired from 142 trauma survivors from the 2008 Wenchuan earthquake using a 3.0-T magnetic resonance imaging system. Hippocampal subfield segmentations were performed with FreeSurfer v6.0. We used the simple moderation model from the PROCESS v3.4 tool for SPSS 23.0 to examine the association between the rs1800497 polymorphism, PTSD severity, and hippocampal CA3 and DG volumes.

RESULTS

A significant genotype × PTSD symptom severity interaction was found for the left CA3 volume (ΔF = 5.01, p = 0.008, ΔR² = 0.05). Post hoc, exploratory analyses deconstructing the interaction revealed that severe PTSD symptomatology were associated with reduced left CA3 volume among TC heterozygotes (t =  - 2.86, p = 0.005).

CONCLUSIONS

This study suggests that DRD2 Taq1A polymorphism moderates the association between PTSD symptomatology and left CA3 volume, which promotes an etiological understanding of the hippocampal atrophy at the subfield level. This highlights the complex effect of environmental stress, and provides possible mechanism for the relationship between the dopaminergic system and hippocampal function in PTSD.