Temporal reciprocal relationships among anxiety, depression, and posttraumatic stress disorder for family surrogates from intensive care units over their first two bereavement years

Associations Between Family-Assessed Quality-of-Dying-and-Death Latent Classes and Bereavement Outcomes for Family Surrogates of ICU Decedents

OBJECTIVES

To examine associations between family surrogates' bereavement outcomes and four previously determined quality of dying and death (QODD) latent classes (high, moderate, poor-to-uncertain, and worst).

DESIGN

Prospective, longitudinal, observational study.

SETTING

Medical ICUs at two academically affiliated medical centers in Taiwan.

PATIENTS/PARTICIPANTS

Three hundred nine family surrogates responsible for decision-making for critically ill patients at high risk of death (Acute Physiology and Chronic Health Evaluation II scores > 20) from a disease.

INTERVENTIONS

None.

MEASUREMENTS AND MAIN RESULTS

Participants were assessed by the depression and anxiety subscales of the Hospital Anxiety and Depression Scale, the Impact of Event Scale-Revised, 11 items of the Prolonged Grief Disorder (PGD) scale, and the Medical Outcomes Study 36-Item Short-Form Health Survey at 1, 3, 6, 13, 18, and 24 months post-loss. We simultaneously examined associations of four QODD latent classes with physical and mental health-related quality of life (HRQOL) and symptoms of anxiety, depression, post-traumatic stress disorder (PTSD), and PGD assessed over 24 bereavement months using multivariate hierarchical linear modeling. Surrogates' distinct QODD latent classes assessed at 1-month post-loss were significantly associated with bereavement outcomes, except for physical HRQOL and PGD symptoms. Significantly more depressive symptoms and worse mental HRQOL (β [95% CI]) were reported by bereaved surrogates in the moderate (1.958 [1.144-2.772], -2.245 [-3.961 to -0.529]), poor-to-uncertain (2.224 [1.438-3.010], -7.026 [-8.683 to -5.369]), and worst (2.081 [1.215-2.964], -4.268 [-6.096 to -2.440]) QODD classes than those in the high QODD class. Bereaved surrogates in the moderate (2.095 [1.392-2.798]) and poor-to-uncertain (0.801 [0.123-1.480]) QODD classes reported more anxiety symptoms, whereas those in the poor-to-uncertain QODD class suffered more PTSD symptoms (2.889 [1.005-4.774]) than those in the high QODD class.

CONCLUSIONS

The four distinct QODD latent classes were significantly associated with ICU family surrogates' bereavement outcomes, suggesting targets to improve end-of-life care quality in ICUs.