Autonomic dysfunction as a predictor of infection in neurocritical care unit: a prospective cohort study.

PURPOSE: Infection in the neurocritical care unit ( NCCU) can cause significant mortality and morbidity. Autonomic nervous system plays an important role in defense against infection. Autonomic dysfunction causing inflammatory dysregulation can potentiate infection. We aimed to study the relationship between autonomic dysfunction and occurrence of infection in neurologically ill patients. METHODS: Fifty one patients who were on mechanical ventilation were prospectively enrolled in this study. Autonomic dysfunction was measured for three consecutive days on admission to NCCU using Ansiscope. Patients were followed up for seven days to see the occurrence of infection. Infection was defined as per centre of disease control definition. RESULTS: A total of 386 patients were screened for eligibility. 68 patients satisfied the eligibility criteria and 51 patients were finally included in the study. The incidence of infection was 74.5%. The commonest infection was pulmonary infection (38.8%) followed by urinary tract infection (33.3%), blood stream infection(14.8%), central nervous system infection (11.1%) and wound site infection (3.7%). The degree of autonomic dysfunction (AD) percentage was more in infection group (37.7% (25.2-49.7)) compared to non infection group (23.5% (18-33.5)) and maximal on day 3 (P = 0.02). Patients with increasing trend of AD% from day 1 to day 3 had the highest infection rates. The length of NCCU stay (20(10-23) days and mortality (42.1%) was higher in infection group (p < 0.001). CONCLUSION: AD assessment can be used as a tool to predict development of infection in NCCU. This can help triage and institute early investigation and treatment.

Unveiling the Complexity of Traumatic Brain Injury: Insights from Clinical Scoring Systems.

Krishnakumar M. Unveiling the Complexity of Traumatic Brain Injury: Insights from Clinical Scoring Systems. Indian J Crit Care Med 2024;28(3):193-195.

Preoperative assessment of optic nerve sheath diameter and heart rate variability to predict intraoperative brain condition in patients with supratentorial tumors: a prospective observational study.

Brain relaxation is an important requirement in intracranial neurosurgical procedures and optimal brain relaxation improves the operating conditions. Optic nerve sheath diameter (ONSD) is a non-invasive bedside surrogate marker of intracranial pressure (ICP) status. Elevated ICP is often associated with marked autonomic dysfunction. There is no standard measure to predict intraoperative brain condition non-invasively, considering both anatomical displacement and physiological effects due to raised ICP and brain oedema. This study was aimed to determine the usefulness of heart rate variability (HRV) parameters and ONSD preoperatively in predicting intraoperative brain relaxation in patients with supratentorial tumors undergoing surgery.This prospective observational study was conducted in a tertiary care centre. 58 patients with supratentorial brain tumors undergoing elective surgery were studied. Preoperative clinical presentation, computed tomography (CT) findings, ONSD and HRV parameters were assessed in determining intraoperative brain condition. Intraoperative hemodynamic parameters and brain relaxation score after craniotomy were studied. There was significant difference in CT grade, ONSD and HRV parameters in patients between lax and tight brain. A receiver operating curve was constructed to determine the cut off to predict intraoperative brain bulge. A CT grade more than 2, ONSD of greater than 0.63 cms and ratio of low frequency to high ratio (LF/HF) of more than 1.8 were good predictors of brain bulge. The changes in ONSD and HRV parameters, with the CT findings can be used as surrogate markers of increased ICP to help predict intraoperative brain condition.

Full-text publications of presentations at neuroanesthesia meetings of India: A 5-year audit and analysis.

Backgroud and Aims: Conference presentations provide an opportunity to rapidly share findings of new research despite limitations of details and reach. Earlier studies have examined publication rates of conference presentations in anesthesia. However, conversion rate of neuroanesthesia meeting presentations to publications is unknown. We assessed the publication rate of neuroanesthesia conference presentations from India over a 5-year period and identified factors contributing to subsequent publications. Material and Methods: Conference abstracts of the Indian Society of Neuroanaesthesiology and Critical Care (ISNACC) from 2014 to 2018 were studied with regard to conversion to full-length publications. Details of presentations were obtained from abstracts published in the journal of ISNACC and details of publications were collected by searching Google and PubMed using title and author details. Results: Only 17.5% (40/229) of the abstracts presented at ISNACC conferences over a 5-year period resulted in subsequent full-text publications in peer-reviewed journals. Prospective cohort studies (OR [95% CI] 2.84 [1.05-8.56], P = 0.048), randomized trials (OR [95% CI] 2.69 [1.04 to 7.9], P = 0.053), and abstracts from public institutions (OR [95% CI] 3.44 [1.4 to 10.42], P = 0.014) were significantly associated with publications after conference presentations. Conclusion: The conversion rate of conference presentations of neuroanesthesia society of India into journal publications is significantly low. There is need for neuroanesthesia community of India to work together to improve the translation of presentations into publications.

Perioperative Analgesia in Neurosurgery (PAIN): A national survey of pain assessment and management among neuroanesthesiologists of India.

BACKGROUND: Perioperative pain assessment and management in neurosurgical patients varies widely across the globe. There is lack of data from developing world regarding practices of pain assessment and management in neurosurgical population. This survey aimed to capture practices and perceptions regarding perioperative pain assessment and management in neurosurgical patients among anesthesiologists who are members of the Indian Society of Neuroanaesthesiology and Critical Care (ISNACC) and evaluated if hospital and pain characteristics predicted the use of structured pain assessment protocol and use of opioids for postoperative pain management. METHODS: A 26-item English language questionnaire was administered to members of ISNACC using Kwiksurveys platform after ethics committee approval. Our outcome measures were adoption of structured protocol for pain assessment and opioid usage for postoperative pain management. RESULTS: The response rate for our survey was 55.15% (289/524). One hundred eighteen (41%) responders informed that their hospital setup had a structured pain protocol while 43 (15%) responders reported using opioids for postoperative pain management. Predictors of the use of structured pain protocol were private setup (odds ratio [OR] 2.64; 95% confidence interval [CI] 1.52-4.59; P = .001), higher pain intensity (OR 0.37; 95% CI 0.21-0.64; P < .001) and use of pain scale (OR 7.94; 95% CI 3.99-15.81; P < .001) while availability of structured pain protocol (OR 2.04; 95% CI 1.02-4.05; P = .043) was the only significant variable for postoperative opioid use. CONCLUSIONS: Less than half of the Indian neuroanesthesiologists who are members of ISNACC use structured protocol for pain assessment and very few use opioids for postoperative pain management in neurosurgical patients.

Diaphragm Function Assessment During Spontaneous Breathing Trial in Patients with Neuromuscular Diseases.

INTRODUCTION: The optimal time to discontinue patients from mechanical ventilation is critical as premature discontinuation as well as delayed weaning can result in complications. The literature on diaphragm function assessment during the weaning process in the intriguing subpopulation of critically ill neuromuscular disease patients is lacking. METHODS: Patients with neuromuscular diseases, on mechanical ventilation for more than 7 days, and who were ready for weaning were studied. During multiple T-piece trials over days, diaphragm function using ultrasound and diaphragm electrical activity (Edi peaks using NAVA catheter) was measured every 30 min till a successful 2 h weaning. RESULTS: A total of 18 patients were screened for eligibility over 5-month period and eight patients fulfilled the inclusion criteria. Sixty-three data points in these 8 subjects were available for analysis. A successful breathing trial was predicted by Edi reduction (1.22 µV for every 30 min increase in weaning duration; 0.69 µV for every day of weaning) and increase in diaphragm excursion (2.81 mm for every 30 min increase in weaning duration; 2.18 mm for every day of weaning). CONCLUSION: The Edi and diaphragm excursion changes can be used as additional objective tools in the decision-making of the weaning trials in neuromuscular disease.

Acute Pancreatitis in a Patient with Subarachnoid Hemorrhage: A Causal Link or a Mere Coincidence?

Both subarachnoid hemorrhage (SAH) and acute pancreatitis (AP) are associated with systemic inflammatory response leading to extracerebral multiple organ dysfunction. In this case report, we describe an adult male, who developed AP in the postoperative period following surgical clipping of an anterior communicating artery aneurysm. The diagnosis of pancreatitis got delayed because the patient showed signs of systemic inflammation which would also been seen following SAH. HOW TO CITE THIS ARTICLE: Goyal A, Krishnakumar M, Radhakrishnan M, Srinivas D. Acute Pancreatitis in a Patient with Subarachnoid Hemorrhage: A Causal Link or a Mere Coincidence? Indian J Crit Care Med 2020;24(2):141-142.

Incidence of Deep Vein Thrombosis in Neurointensive Care Unit Patients-Does Prophylaxis Modality Make Any Difference?

BACKGROUND AND AIMS: To determine the incidence of upper and lower limb deep vein thrombosis (DVT) using ultrasonography (USG) in adult patients admitted to neuro-medical and neurosurgical intensive care unit (ICU). MATERIALS AND METHODS: In this prospective observational study, patients admitted to the medical and surgical neuro-ICU and remained in the ICU for more than 48 hours were recruited. All patients were clinically examined for DVT. Basilic and axillary veins in the upper limbs and popliteal and femoral veins in the lower limbs were screened for DVT using USG. USG examination was performed on the day of admission to ICU and thereafter every 3rd day till discharge from ICU or death. Intermittent pneumatic compression (IPC) stockings were applied to the lower limbs to all the patients in both ICUs. Unfractionated heparin (UFH) was given subcutaneously to neuromedical ICU patients, while in surgical ICU, it was left to the discretion of the neurosurgeons. RESULTS: A total of 130 adult patients were admitted to the ICU during the 8 month study period. Thirty patients were excluded and the remaining 98 patients' (38 in medical and 60 in surgical ICU) data were analyzed. None of the 38 medical ICU patients developed DVT, while in neurosurgical ICU, 4 out of 60 patients developed DVT. CONCLUSION: A combination of UFH and IPC stockings were effective in minimizing the DVT in neuromedical ICU patients. In surgical patients, through IPC stockings were effective, UFH can be considered for patients with intracranial malignancy. HOW TO CITE THIS ARTICLE: Behera SS, Krishnakumar M, Muthuchellappan R, Philip M. Incidence of Deep Vein Thrombosis in Neurointensive Care Unit Patients-Does Prophylaxis Modality Make Any Difference? Indian Journal of Critical Care Medicine, January 2019;23(1):43-46.

Bacterial colonization of peripheral intravenous cannulas in a tertiary care hospital: A cross sectional observational study.

BACKGROUND: The use of intravenous (IV) cannulas is an integral part of patient care in hospitals. These intravenous cannulas are a potential route for microorganisms to enter the blood stream resulting in a variety of local or systemic infections. Studies showing the actual prevalence of colonization of peripheral IV cannulas and its role in BSI are lacking. Hence, this study was aimed to estimate the prevalence of colonization of the injection ports of peripheral IV cannulas. METHODS: This cross sectional study was conducted on patients admitted in ICU and wards in an 800 bedded tertiary care hospital. Swabs were taken from lumens of peripheral IV cannulas and cultured. Patient demographic data and practices followed for maintenance of IV line were noted. RESULTS: A total of 196 injection port samples were taken, out of which 11 tested positive for microbial growth (5.61%). Staphylococcus aureus was the predominant organism contributing 64% of the microbial growth. A significant association was seen between presence of local signs, old age and positive cultures. Flushing IV cannula every 6 h was associated with negative cultures. CONCLUSION: Peripheral IV cannulation has significant potential for microbial contamination and is largely ignored. Most of the risk factors associated with growth of microorganisms in the injection ports of peripheral intravenous cannulas (which has a potential to cause catheter-related blood stream infections) can be prevented by improving protocols for management. To prevent infection from occurring, practitioners should be educated and trained about the care and management of IV.

The prescribable drugs with efficacy in experimental epilepsies (PDE3) database for drug repurposing research in epilepsy.

OBJECTIVE: Current antiepileptic drugs (AEDs) have several shortcomings. For example, they fail to control seizures in 30% of patients. Hence, there is a need to identify new AEDs. Drug repurposing is the discovery of new indications for approved drugs. This drug "recycling" offers the potential of significant savings in the time and cost of drug development. Many drugs licensed for other indications exhibit antiepileptic efficacy in animal models. Our aim was to create a database of "prescribable" drugs, approved for other conditions, with published evidence of efficacy in animal models of epilepsy, and to collate data that would assist in choosing the most promising candidates for drug repurposing. METHODS: The database was created by the following: (1) computational literature-mining using novel software that identifies Medline abstracts containing the name of a prescribable drug, a rodent model of epilepsy, and a phrase indicating seizure reduction; then (2) crowdsourced manual curation of the identified abstracts. RESULTS: The final database includes 173 drugs and 500 abstracts. It is made freely available at www.liverpool.ac.uk/D3RE/PDE3. The database is reliable: 94% of the included drugs have corroborative evidence of efficacy in animal models (for example, evidence from multiple independent studies). The database includes many drugs that are appealing candidates for repurposing, as they are widely accepted by prescribers and patients-the database includes half of the 20 most commonly prescribed drugs in England-and they target many proteins involved in epilepsy but not targeted by current AEDs. It is important to note that the drugs are of potential relevance to human epilepsy-the database is highly enriched with drugs that target proteins of known causal human epilepsy genes (Fisher's exact test P-value < 3 × 10-5 ). We present data to help prioritize the most promising candidates for repurposing from the database. SIGNIFICANCE: The PDE3 database is an important new resource for drug repurposing research in epilepsy.

Comparison between continuous thoracic epidural block and continuous thoracic paravertebral block in the management of thoracic trauma.

BACKGROUND: Postoperative pain is thought to be the single most important factor leading to ineffective ventilation and impaired secretion clearance after thoracic trauma. Effective pain relief can be provided by thoracic epidural analgesia but may have side effects or contraindications. Paravertebral block is an effective alternative method without the side effects of a thoracic epidural. We did this study to compare efficacy of thoracic epidural and paravertebral block in providing analgesia to thoracic trauma patients. METHODS: After ethical clearance, 50 patients who had thoracic trauma were randomized into two groups. One was a thoracic epidural group (25), and second was a paravertebral group (25). Both groups received 10 ml of bolus of plain 0.125% bupivacaine and a continuous infusion of 0.25% bupivacaine at the rate of 0.1 ml/kg/h for 24 h. Assessment of pain, hemodynamic parameters, and spirometric measurements of pulmonary function were done before and after procedure. Visual analog scale (VAS) scores were accepted as main outcome of the study and taken for power analysis. RESULTS: There was significant decrease in postoperative pain in both the groups as measured by VAS score. However, the degree of pain relief between the groups was comparable. There was a significant improvement in pulmonary function tests in both the groups post-procedure. The change in amount of inflammatory markers between both the groups was not significantly different. CONCLUSION: Paravertebral block for analgesia is comparable to thoracic epidural in thoracic trauma patients and is associated with fewer side effects.

Decoding the Rejection Code: Understanding Why Articles Get Axed.

In the competitive arena of medical publishing, manuscript rejection remains a significant barrier to disseminating research findings. This editorial delves into the multifaceted nature of manuscript rejection, elucidating common reasons and proposing actionable strategies for authors to enhance their chances of acceptance. Key rejection factors include a mismatch with journal scope, lack of novelty, methodological flaws, inconclusive results, ethical issues, poor presentation, data inaccessibility, author misconduct, and plagiarism. Ethical lapses, such as lacking informed consent, or submissions fraught with grammatical errors, further doom manuscripts. In addressing these pitfalls, authors are advised to ensure content originality, methodological rigor, ethical compliance, and clear presentation. Aligning the manuscript with the journal's audience, scope, and editorial standards is crucial, as is professional conduct and responsiveness to feedback. Leveraging technological tools for citation management, grammar checking, and plagiarism detection can also significantly bolster manuscript quality. Ultimately, understanding and addressing common rejection reasons can empower authors to improve their submissions, contributing to the advancement of medical knowledge and their professional growth.

Beyond Synthetics: Promising Outcomes With the Invengenx® Bovine Pericardial Patch for Ventricular Septal Defect Repair in a Young Pediatric Population.

Ventricular septal defects (VSDs) are a prevalent congenital heart anomaly demanding safe and lasting interventions. This paper explores the application of Invengenx® bovine pericardial patch (Tisgenx, Irvine, California), a promising biomaterial, in VSD repair. We present two case studies: a seven-month-old infant and a three-year-old child undergoing VSD closure using autologous and bovine pericardial patches, respectively. Both patients tolerated the procedures well, experiencing no intra-operative complications and demonstrating excellent postoperative recovery. Echocardiography postoperatively showed no complications and improved clinical outcomes. Notably, the pericardial patches exhibited excellent integration and suture retention, highlighting their durability and compatibility with the growing heart. These cases establish the feasibility and effectiveness of the Invengenx® pericardial patch for VSD repair. The favorable outcomes in terms of safety and efficacy support the potential of this biomaterial as a valuable alternative in pediatric cardiac surgery, particularly for complex VSDs or patients with contraindications to synthetic patches. Further research is crucial to unlock the full potential of bovine pericardium as a durable and advantageous option for VSD repair in a broader range of pediatric patients.

The Myths, Perils, and Pitfalls of Redo Pediatric Cardiac Surgery: The New Normal in Developing Countries Such as India.

Pediatric patients undergoing reoperative cardiac surgery after a previous sternotomy face a higher degree of surgical complexity compared to those undergoing initial procedures. They have higher intraoperative and postoperative risks. The increased risk of surgery is due to preoperative patient factors and intraoperative technical challenges. Redo-pediatric cardiac surgery is a common event in almost every pediatric cardiac surgeon's professional life. Redo-surgery is almost inevitable in patients who have multi-stage repair of congenital heart surgeries and biological valves at a young age, and often in those having valve repair in rheumatic disease. So, being familiar with the pitfalls and precautions to be taken is of crucial importance. In general, the patients presenting for repeat procedures are sicker, older, and have more comorbid conditions. The dissection is always rendered difficult by adhesions, scarring, and previous graft placements. Hence, prolonged dissection time, intraoperative injuries to heart chambers, great vessels, and grafts, increased bleeding, and poorer cardiac function result in higher morbidity and mortality in such subsets of patients. The outcome is worse with emergency redo-cardiac surgeries.

Successful Cardiac Surgical Management in a Trisomy 21 Child After Long-Term Hospitalization Associated With Bronchopneumonia and Hepatitis C Virus Seropositivity: A Case Report.

A 31-month-old girl with trisomy 21 (Down syndrome) was seen in the emergency department of pediatrics because of oxygen desaturation associated with features of lower respiratory tract infections. She was born at full term and diagnosed with congenital heart disease (CHD) having ventricular septal defect (VSD), and patent ductus arteriosus (PDA); consequently, she underwent corrective surgery after adequate optimization of treatment. Incidentally, she was detected to have the presence of anti-hepatitis C virus (HCV) antibodies. In this case report, we mainly focus on the multi-modal approach to medical and surgical management.

The Enigma of Recurrent Lung Abscess: Management and Outcomes in a School-Aged Child With a Review of Literature.

Pediatric lung abscess is a rare and poorly studied disease entity. In the past, prolonged courses of intravenous (IV) antibiotics have been successfully used; however, with the advent of interventional radiology, the main therapeutic approach is through percutaneous placement of pigtail catheters with ultrasound and computed tomography (CT) direction, where available. The pathogen yield identified from fluid samples of the abscess has dramatically increased owing to the greater invasive measures, such as aspiration and drainage, as well as enhanced microbiological diagnostic methods, which also include polymerase chain reaction testing. In our case report, in 2012 when the patient was two years old, she was diagnosed with pulmonary Koch's and underwent anti-Koch's therapy, category 2. High-resolution CT of the chest revealed a large lobulated cavitary lesion with an air-fluid level suggestive of a right lung abscess. After initial therapy with IV antibiotics for three weeks and a negative tuberculosis work-up, she underwent right limited lateral thoracotomy and drainage with decortication of the right lung abscess (LA) in 2019 via a left endobronchial tube with a bronchial blocker (general endobronchial anesthesia). All samples sent for histopathologic examination after surgery yielded negative results, and she was discharged after a course of injectable antibiotics for 21 days. She remained almost symptom-free for the next four years. Thereafter, she presented with a right LA recurrence due to a thick-walled cavitary lesion, with a severely damaged right lower lung lobe resulting in right lower lobectomy under single-lung ventilation (double-lumen endotracheal tube No. 26 Fr.). Culture results should guide management, particularly for immunocompromised patients, as the LA may be attributed to complications arising from underlying conditions. Primary lung abscesses (PLA) in children are typically caused by Staphylococcus aureus, Streptococcal species, and Klebsiella pneumoniae. Compared to adults, children with PLA and secondary lung abscesses have a meaningfully greater rate of recovery.

Statistics in the Operating Room: A Cardiovascular Surgeon's Guide to Numbers That Matter.

Pediatric cardiac surgery demands meticulous technique, but optimal outcomes hinge on translating data into actionable insights. This editorial bridges the gap between scalpel and statistical jargon, empowering surgeons to decipher common tests. Descriptive statistics paint portraits of patient cohorts, while hypothesis testing discerns real differences from chance. Regression analysis unveils hidden relationships, predicting outcomes based on complex interplays of variables. Survival analysis tracks the delicate dance of time and survival, informing therapeutic strategies. By embracing statistical fluency, surgeons become architects of personalized care, tailoring interventions to mitigate risks and maximize the precious gift of a beating heart.

Surgical Management of Congenital Pulmonary Airway Malformations (CPAM) in an Infant and a Toddler: Case Report Depicting Two Distinct Surgical Techniques With Successful Outcomes.

Congenital pulmonary airway malformations (CPAM) compose the major part of congenital lung malformations (CLM) and have traditionally been treated by pulmonary lobectomy. In terms of surgical strategy, lobectomy has conventionally been the preferred treatment for CPAM localized to a single lobe. More recently, alternative approaches including lung-sparing resections (LSR), such as wedge or non-anatomic resections and segmentectomy, have been suggested. In asymptomatic CPAM early surgical resection is often shown to reduce infection and malignancy development. We describe two patients who were diagnosed with CPAM when being evaluated for respiratory tract infection. Patient 1 (P1) was a two-month-old infant weighing 4 kg with glucose-6-phosphate dehydrogenase (G6PD) deficiency and Patient 2 (P2) was a toddler aged one year, nine months weighing 9 kg. P1 underwent LSR for the CPAM diagnosed in the left upper lobe of the lung with conventional mechanical ventilation whilst right upper lobectomy was performed in P2 using one/single lung ventilation. In both cases, LSR and right upper lobectomy led to an uneventful postoperative recovery with no complications reported.