Outcomes in 886 Critically Ill Patients After Near-Hanging Injury

Epidemiology and outcome predictors in 450 patients with hanging-induced cardiac arrest: a retrospective study

Background

Cardiac arrest is the most life-threatening complication of attempted suicide by hanging. However, data are scarce on its characteristics and outcome predictors.

Methods

This retrospective observational multicentre study in 31 hospitals included consecutive adults admitted after cardiac arrest induced by suicidal hanging. Factors associated with in-hospital mortality were identified by multivariate logistic regression with multiple imputations for missing data and adjusted to the temporal trends over the study period.

Results

Of 450 patients (350 men, median age, 43 [34-52] years), 305 (68%) had a psychiatric history, and 31 (6.9%) attempted hanging while hospitalized. The median time from unhanging to cardiopulmonary resuscitation was 0 [0-5] min, and the median time to return of spontaneous circulation (ROSC) was 20 [10-30] min. Seventy-nine (18%) patients survived to hospital discharge. Three variables were independently associated with higher in-hospital mortality: time from collapse or unhanging to ROSC>20 min (odds ratio [OR], 4.71; 95% confidence intervals [95%CIs], 2.02-10.96; p = 0.0004); glycaemia >1.4 g/L at admission (OR, 6.38; 95%CI, 2.60-15.66; p < 0.0001); and lactate >3.5 mmol/L at admission (OR, 6.08; 95%CI, 1.71-21.06; p = 0.005). A Glasgow Coma Scale (GCS) score of >5 at admission was associated with lower in-hospital mortality (OR, 0.009; 95%CI, 0.02-0.37; p = 0.0009).

Conclusion

In patients with hanging-induced cardiac arrest, time from collapse or unhanging to return of spontaneous circulation, glycaemia, arterial lactate, and coma depth at admission were independently associated with survival to hospital discharge. Knowledge of these risk factors may help guide treatment decisions in these patients at high risk of hospital mortality.

Clinical Profile, Corticosteroid Usage and Predictors of Mortality in Near-hanging Patients: A Five-year, Single-center Retrospective Study

Background

Hanging is the most common method of suicide in India. When near-hanging patients reach the hospital for treatment, their neurological outcome ranges from full recovery to severe neurological impairment or death. This study looked at the clinical profile, usage of corticosteroids and predictors of mortality in near-hanging patients.

Materials and methods

This retrospective study was conducted from May 2017 to April 2022. Demographic, clinical, and treatment details were collected from case records. Neurological outcome at discharge was assessed using the Glasgow Outcome Scale (GOS).

Results

The study involved 323 patients, 60% of men with a median (interquartile range) age of 30 (20-39). At the time of admission, the Glasgow Coma Scale (GCS) ≤8 in 110 (34%) patients, hypotension was present in 43 (13.3%) of patients, and 21 (6.5%) had hanging-induced cardiac arrest. About 101 patients required intensive care unit care. Corticosteroid therapy was given to 219 patients (67.8%) as part of anti-cerebral edema measures. Good neurological recovery was found (GOS-5) in 84.2% of patients, and the death rate (GOS-1) was 9.3%. Univariate logistic regression showed that usage of corticosteroids is significantly associated with poor survival (p < 0.02, odds ratio 4.7). In the multivariable logistic regression analysis, GCS ≤8, hypotension, need for intensive care, hanging-induced cardiac arrest, aspiration pneumonia, and severe cerebral edema were found to be significantly associated with mortality.

Conclusion

The majority of near-hanging patients had a good neurological recovery. Corticosteroids were used in two-thirds of the study population. There were multiple variables associated with mortality.

How to cite this article

Ramadoss R, Sekar D, Rameesh M, Saibaba J, Raman D. Clinical Profile, Corticosteroid Usage and Predictors of Mortality in Near-hanging Patients: A Five-year, Single-center Retrospective Study. Indian J Crit Care Med 2023;27(6):403-410.

A Child With a Glasgow Coma Scale Score of 4 After Near-Hanging: A Case Report on Treatment Without Intubation and Targeted Temperature Management

While prehospital medical interventions are evolving and improving survival rates, the evidence for adequate early prognostic assessment is often insufficient. A 12-year-old Japanese child was found hanging on the roof of his home. After being rescued by his mother, he was transported by an ambulance and a rapid response car (RRC) with doctors, nurses, and paramedics on board, and admitted to our hospital. His initial Glasgow Coma Scale score in the RRC was 4. Although he did not undergo intubation and targeted temperature management (TTM), he had no neurological sequelae upon discharge. To the best of our knowledge, this report is the first to describe the case of a child with a decreased level of consciousness after near-hanging, who was treated without intubation and TTM.

The Complexity of Trauma for LGBTQ+ People

Trauma care is complex. Acute and critical care clinicians perceive trauma as a skilled response to critical injury or accident that occurs to patients, but trauma exists on many levels. One of those is a grim reality for patients who are lesbian, gay, bisexual, transgender, queer or questioning, and from other sexual and gender minorities (LGBTQ+). A lifetime of trauma through stigma, discrimination, and victimization is too often present. Owing to distrust of the health care system and clinicians, LGBTQ+ experience health and health care disparities.

Near Hanging: Evaluation and Management

Prior to the COVID-19 pandemic, the incidence of self-harm was already on the rise. Hanging/suffocation accounted for 50% of the increase in suicide attempts and remains the second leading cause of death from self-harm in the United States. Studies on the management of near-hanging patients are lacking, and most published literature is retrospective. Following airway and circulation assessment, clinical examination and imaging, namely CT angiography, remain the standard for identifying the injuries associated with near hanging: cervical spine fracture, blunt cerebrovascular injury, laryngeal injury, and injury to the trachea and oropharynx. These injuries, however, are uncommon, and each occur in < 5% of patients in most series. In a large series of critically ill near-hanging patients, > 50% survived to hospital discharge; however, cardiac arrest predicted a poor outcome. The management of asphyxia-related arrest remains controversial. Targeted temperature management has only been studied in a single large multicenter trial, which was retrospective. Given the significant selection bias of targeted temperature management in the treatment of the most ill patients, no firm recommendations can be made. Finally, for survivors, the underlying mental health issues must be addressed to avoid recurrent suicide attempts. Thirty percent of patients in a large near-hanging series were admitted for their second suicide attempt.

Application of 18F-FDG brain PET for survival prediction in a rat model of hanging-induced hypoxic brain injury

BACKGROUND

Accurate prediction of survival outcomes after hanging is a crucial and challenging issue in comatose survivors. In this preclinical study, we evaluated the potential utility of using brain glucose metabolism as measured by fluorine-18-fluorodeoxyglucose (¹⁸F-FDG) positron emission tomography (PET) for survival prediction in a rat model of hanging-induced hypoxic brain injury (HBI).

METHODS

HBI was induced by mechanical hanging using Sprague Dawley rats. ¹⁸F-FDG brain PET images were acquired in 26 HBI rats three hours post-injury (3 h post-injury) and 4 controls. During the 1 month follow-up period, HBI rats were further classified as survivors (n = 15) and nonsurvivors (n = 11). Between-group regional (standardized uptake values normalized to the reference whole brain = SUVR_WB, cerebellum = SUVR_CB, and pons = SUVR_pons) and voxel-based analyses were performed. The prognostic value of the SUVR was tested for overall survival (OS). In addition, diffusion-weighted imaging (DWI) was performed in 2 controls and 5 HBI rats (3 survivors, 2 nonsurvivors, 3 h post), and an apparent diffusion coefficient (ADC) map was generated.

RESULTS

The nonsurvivor group showed a significantly lower SUVR_WB, SUVR_CB, and SUVR_pons of the cerebral cortices than the survivor group (all p < 0.001). Voxel-based comparison also demonstrated significant reduction in the nonsurvivor group compared with the survivor group (family-wise error-corrected p < 0.05). However, there was no significant difference between controls and survivors. Of 3 reference regions, the SUVR_pons demonstrated the largest difference between the survivor and nonsurvivor groups. With an optimal cutoff value of 1.12 (AUC 0.952, p < 0.001), the SUVR_pons predicted survival outcomes with a sensitivity of 81.8% and specificity of 100%. The OS of the low SUVR_pons group was significantly shorter than that the high SUVR_pons group (p < 0.001). The mean ADC values of each brain region showed no significant difference according to survival outcomes.

CONCLUSIONS

These results suggest the potential utility of ¹⁸F-FDG brain PET for predicting survival in hanging-induced HBI.

Cardiopulmonary resuscitation in special circumstances

Cardiopulmonary resuscitation prioritises treatment for cardiac arrests from a primary cardiac cause, which make up the majority of treated cardiac arrests. Early chest compressions and, when indicated, a defibrillation shock from a bystander give the best chance of survival with a good neurological status. Cardiac arrest can also be caused by special circumstances, such as asphyxia, trauma, pulmonary embolism, accidental hypothermia, anaphylaxis, or COVID-19, and during pregnancy or perioperatively. Cardiac arrests in these circumstances represent an increasing proportion of all treated cardiac arrests, often have a preventable cause, and require additional interventions to correct a reversible cause during resuscitation. The evidence for treating these conditions is mostly of low or very low certainty and further studies are needed. Irrespective of the cause, treatments for cardiac arrest are time sensitive and most effective when given early-every minute counts.

Do we need neuroimaging in every case of near-hanging?: experience from a level 1 trauma center and analysis of the National Trauma Data Bank

PURPOSE

Our study analyzes imaging results in near-hanging to determine what neuroimaging workup is necessary. We evaluate GCS as a clinical predictor to help guide imaging choice.

METHODS

This is a retrospective study of patients from a level one trauma center and from the National Trauma Data Bank (NTDB). We classified injuries into categories based on the likelihood that CT played an important role in their diagnosis and management. We assessed whether a normal Glasgow Coma Scale (GCS) could exclude clinically important injuries. Chi square was used to test for significance for categorical variables. Multivariate logistic regression was used for multivariate analysis.

RESULTS

CT showed structural brain findings in 0% of patients from our facility (local patients) and 11.7% of NTDB patients. Of local patients and NTDB patients, 1.4% and 6.6% had blunt cerebral vascular injury (BCVI) respectively. Of local patients and NTDB patients, 1.4% and 3.3% had a cervical spine fracture or dislocation, respectively. Mortality for patients with GCS 15 versus GCS < 15 was 0 versus 26.9% for local patients (p = 0.004) and 0 versus 43.8% for NTDB (p < 0.001). Structural brain injury for patients with GCS 15 versus GCS < 15 for isolated hanging was 0 versus 14.9% for NTDB (p < 0.001). GCS 15 was an independent predictor of survival and freedom from brain injury (p < 0.001), but not neck injury.

CONCLUSION

GCS 15 is a significant independent predictor of survival and freedom from brain injury in near-hanging. GCS 15 rules out intracranial injury likely to require intervention with negative predictive value of 100%. GCS of 15 does not rule out critical neck injury.