Evaluation of analgesic effects and hemodynamic responses of epidural ropivacaine in laparoscopic abdominal surgeries: Randomised controlled trial.

Background and Aims: The role of epidural analgesia in laparoscopic surgeries remains controversial. We evaluated intraoperative analgesic effects of epidural ropivacaine versus intravenous fentanyl in laparoscopic abdominal surgery and assessed postoperative analgesic requirements, hemodynamic changes, time to ambulation, and length of stay (LOS) in the ICU. Material and Methods: Seventy-two American Society of Anesthesiologists physical status I-III adult patients undergoing elective laparoscopic abdominal surgeries were randomized to either 0.5 mg/kg/h intravenous fentanyl (Group C) or 0.2% epidural ropivacaine at 5-8 mL/h (Group E) infusions intraoperatively and 0.25 m/kg/h fentanyl and 0.1% epidural ropivacaine infusions respectively postoperatively. Variations in mean arterial pressure (MAP) of 20% from baseline were points of intervention for propofol and analgesia with fentanyl or vasopressors. The number of interventions and total doses of fentanyl and vasopressors were noted. Postoperative analgesia was assessed at 0, 6, 12, and 24 h and when pain was reported with numerical rating scale and objective pain scores. Chi-square test and Student's t-test were used for categorical and continuous variable analysis. Results: Intraoperatively, 14 patients versus 4 needed additional fentanyl and 26 versus 14 needed additional propofol in groups C and E respectively (P = 0.007, P = 0.004). MAP at 0, 6 and 18 h was lower in Group E. Pain scores were better in Group E at 6,18, and 24 h postoperatively. Time to ambulation was comparable but LOS ICU was prolonged in Group E (P = 0.05). Conclusion: Epidural ropivacaine produces superior intraoperative analgesia and improved postoperative pain scores without affecting ambulation but increases vasopressor need and LOS ICU in comparison with intravenous fentanyl in laparoscopic abdominal surgeries.

Evaluation of segmental epidural blockade following standard test dose versus test dose with addition of saline in abdominal surgeries.

BACKGROUND AND AIMS: Epidural analgesia is widely used for pain relief but confirmation of accurate epidural placement is poorly understood. We proposed that sensory blockade to cold sensation would predict the accurate placement of epidural. The primary outcome was the assessment of sensory blockade at 5 and 10 min with a standard epidural test dose versus test dose with additional saline. We looked at haemodynamic changes following administration as secondary outcomes. METHODS: Following Ethics Committee approval, 161 patients presenting for elective abdominal surgery needing epidural analgesia with general anaesthesia were randomly allocated into Group 1 receiving standard test dose (3 ml of 2% lignocaine with 1:2,00,000 adrenaline) or Group 2 (standard test dose with 6 ml of saline) epidurally. The blockade to cold sensation was assessed at 5 and 10 min. The heart rate (HR), systolic blood pressure (SBP), and mean arterial pressure (MAP) were recorded at baseline, 1, 5, and 10 min following epidural dosing. Statistical analysis was performed with Chi-square test for categorical and Student's t-test for continuous variables. RESULTS: The sensory blockade at 5 min was 69.5% versus 82.3% (P = 0.059), and at 10 min 85.4% versus 97.5% (P = 0.01) in Groups 1 and 2, respectively. The MAP at 5 min (P = 0.032) and the HR and MAP at 10 min (P = 0.015, 0.04) were significantly lower in Group 2. CONCLUSION: An epidural test dose of 3 ml followed by additional 6 ml saline accurately predicted sensory blockade to cold at 10 min in comparison to the standard dose of 3 ml but was associated with a decrease in the HR and MAP.

Indian agriculture, air pollution, and public health in the age of COVID.

Emerging evidence supports the intuitive link between chronic health conditions associated with air pollution and the vulnerability of individuals and communities to COVID-19. Poor air quality already imposes a highly significant public health burden in Northwest India, with pollution levels spiking to hazardous levels in November and early December when rice crop residues are burned. The urgency of curtailing the COVID-19 pandemic and mitigating a potential resurgence later in the year provides even more justification for accelerating efforts to dramatically reduce open agricultural burning in India.

Ovariectomized Rats with Established Osteopenia have Diminished Mesenchymal Stem Cells in the Bone Marrow and Impaired Homing, Osteoinduction and Bone Regeneration at the Fracture Site.

We investigated deleterious changes that take place in mesenchymal stem cells (MSC) and its fracture healing competence in ovariectomy (Ovx)-induced osteopenia. MSC from bone marrow (BM) of ovary intact (control) and Ovx rats was isolated. (99m)Tc-HMPAO (Technitium hexamethylpropylene amine oxime) labeled MSC was systemically transplanted to rats and fracture tropism assessed by SPECT/CT. PKH26 labeled MSC (PKH26-MSC) was bound in scaffold and applied to fracture site (drill-hole in femur metaphysis). Osteoinduction was quantified by calcein binding and microcomputed tomography. Estrogen receptor (ER) antagonist, fulvestrant was used to determine ER dependence of osteo-induction by MSC. BM-MSC number was strikingly reduced and doubling time increased in Ovx rats compared to control. SPECT/CT showed reduced localization of (99m)Tc-HMPAO labeled MSC to the fracture site, 3 h post-transplantation in Ovx rats as compared with controls. Post-transplantation, Ovx MSC labeled with PKH26 (Ovx PKH26-MSC) localized less to fracture site than control PKH26-MSC. Transplantation of either control or Ovx MSC enhanced calcein binding and bone volume at the callus of control rats over placebo group however Ovx MSC had lower efficacy than control MSC. Fulvestrant blocked osteoinduction by control MSC. When scaffold bound MSC was applied to fracture, osteoinduction by Ovx PKH26-MSC was less than control PKH26-MSC. In Ovx rats, control MSC/E2 treatment but not Ovx MSC showed osteoinduction. Regenerated bone was irregularly deposited in Ovx MSC group. In conclusion, Ovx is associated with diminished BM-MSC number and its growth, and Ovx MSC displays impaired engraftment to fracture and osteoinduction besides disordered bone regeneration.