Effects of different sedatives/analgesics on stress responses in patients undergoing craniotomy and bone flap decompression

Progress on the Mechanisms and Neuroprotective Benefits of Dexmedetomidine in Brain Diseases

INTRODUCTION

Dexmedetomidine, a highly specific α2 agonist, has been extensively utilized in clinical sedation and surgical anesthesia since its introduction in 2000 due to its excellent sympatholytic, sedative, and analgesic effects. This review aimed to identify new approaches for the treatment of patients with brain disorders by thoroughly describing the mechanism of action of dexmedetomidine and examining its neuroprotective effects from the standpoints of basic and clinical research.

METHODS

The PubMed and Web of Science databases were searched using the keywords dexmedetomidine and related brain diseases, although relevant articles from the last decade were included for detailed summarization and analysis.

RESULTS

Dexmedetomidine has shown strong neuroprotective effects, such as protection of the blood-brain barrier, decreased neuronal death, maintained hemodynamic stability, and reduced postoperative agitation and cognitive dysfunction. Furthermore, dexmedetomidine has been shown to exert various neuroprotective effects, including anti-inflammatory and antioxidative stress effects, modulation of autophagy, and reduction of apoptosis in cerebral diseases.

CONCLUSIONS

Dexmedetomidine acts as a neuroprotective agent against brain diseases during all phases of treatment. However, clinical trials with larger sample sizes are required to optimize dosage and dosing strategies.

Effects and mechanisms of perioperative medications on the hypothalamic pituitary adrenal response to surgical injury: A narrative review

The adrenal gland is a vital endocrine organ, and adrenal steroid synthesis and secretion are closely regulated by the hypothalamic-pituitary-adrenal (HPA) axis in response to various stimuli. Surgery or trauma can activate the HPA axis and induce the secretion of cortisol. Different cortisol responses vary with the grade of surgery. Perioperative medications have the potential to decrease the cortisol level in the body, and both excessive and insufficient cortisol levels after surgery are disadvantageous. The effect of perioperative medications on the HPA response to surgery can be divided into three levels: "adrenal insufficiency (AI)", "stress response inhibition", and "uncertainty". The clinical presentation of AI includes fatigue, nausea, vomiting, abdominal pain, muscle cramps, hypotension, hypovolemic shock and prerenal failure, which may result in fatal consequences. Stress response inhibition can reduce postoperative complications, such as pain and cognitive dysfunction. This is protective to patients during perioperative and postoperative periods. The aim of the present review is to shed light on current evidence regarding the exact effects and mechanisms of perioperative medications on the HPA response to surgical injury and provide the applicable guidance on clinical anesthesia.

Effects of White Noise on Pain Scores and Salivary Cortisol Levels in Surgical Neonates: A Randomized Controlled Trial

BACKGROUND

Neonates experience varying intensities of pain after surgery. While white noise has been used for postoperative pain relief in infants, its effects on neonates after surgery need further exploration.

PURPOSE

This study aimed to evaluate the effects of white noise on pain scores and salivary cortisol levels in surgical neonates.

METHODS

In this randomized controlled trial, 64 neonates scheduled for surgery were recruited and assigned by block randomization into 2 groups. The intervention group listened to white noise at 50 dB, while the control group listened to white noise at 0 dB, for 30 minutes 6 times for 48 hours postoperatively. Pain scores, measured by the COMFORTneo Scale, and salivary cortisol levels were compared.

RESULTS

Although pain scores decreased after surgery in all subjects, no statistically significant difference was observed between the 2 groups (P = .937). There was a significant difference between pre- and postintervention pain scores in the intervention group only (P = .006). Salivary cortisol levels decreased after intervention in the intervention group, but there was no significant difference between pre- and postintervention levels in the 2 groups (P = .716).

IMPLICATIONS FOR PRACTICE

Given the reduction in pain scores and salivary cortisol concentrations after white noise intervention, white noise shows potential as an adjunctive soothing measure for neonates after surgery.

IMPLICATIONS FOR RESEARCH

Future studies are needed to confirm the efficacy and utility of white noise intervention in clinical settings.

Effect of integrated perioperative rehabilitation intervention under the fast-track surgery concept on stress and complications in patients undergoing craniocerebral injury surgery

Objective

To observe the intervention effect of perioperative rehabilitation intervention of integrated medical care the concept of FTS on stress response and postoperative complications in patients undergoing craniocerebral injury surgery.

Methods

70 patients with Traumatic brain injury (TBI) admitted to the Department of Neurosurgery of our Hospital from January 2019 to December 2021 were as the research objects and were divided into general group and FTS group according to the random number table method, with 35 cases in each group. The general group was intervened with perioperative basic nursing measures for TBI, and the FTS group was intervened with perioperative rehabilitation model of integrated medical care under the concept of FTS on the basis of the general group. The two groups of patients were compared in hemodynamic indexes (heart rate, mean arterial pressure), stress hormone levels (CORT, GLU, E), changes in motor neurological function (GCS score, NHISS score, FMA score), occurrence of postoperative complications (infection, pressure sores, rebleeding, central hyperthermia), short-term quality of life (SF-36) before and after the intervention.

Results

After intervention, the levels of HR, MAP, COR, GLU, and E were significantly lower in FTS group than in the general group (all P < 0.05). After intervention, the Fugl-Meyer score and Barthel index score of upper and lower extremities in both groups were significantly higher than those before intervention, and the FTS group was higher than the general group, and the difference was statistically significant (P < 0.05). After the intervention, the NIHSS scores were significantly lower in both groups than before the intervention, and the FTS group was lower than the general group, and the differences were statistically significant (P < 0.05). Short-term physical function, somatic pain, physical function, general health status, social function, energy, mental health, and emotional function scores were significantly higher in the FTS group than in thegeneral group, and all differences were statistically significant (P < 0.05). The total incidence of infection, pressure ulcers, rebleeding, central high fever and other complications in the FTS group was significantly lower than that in the general group (P < 0.05).

Conclusion

The implementation of integrated perioperative rehabilitation interventions under the concept of FTS for patients with TBI can significantly alleviate patients' stress, promote recovery, reduce the incidence of complications, and improve short-term quality of life, which is worthy of clinical promotion.