Retrospective case-control non-inferiority analysis of ultrasound-guided erector spinae plane block in dogs undergoing mini-hemilaminectomy for intervertebral disc disease.

BACKGROUND: Veterinary medicine has seen significant advancements in locoregional anaesthesia and pain management, including the emergence of the erector spinae plane (ESP) block. However, limited clinical evidence exists on its efficacy and safety. OBJECTIVES: This study compares ultrasound-guided ESP block (ESP group) with an intraoperative intravenous ketamine infusion analgesic protocol (CRI group) in dogs undergoing thoracolumbar mini-hemilaminectomy, focusing on intraoperative opioid consumption, cardiovascular response to surgical stimulation (CR), postoperative pain scores (PS), and postoperative opioid consumption. METHODS: Retrospective, case-control, non-inferiority study conducted in a single centre. Data collected included demographics, bupivacaine dose, ESP block operator, intraoperative recorded variables (haemodynamic variables, CR, complications, rescue analgesia), pre- and postoperative analgesia, 24-hour PS and opioid administration, first food intake post-extubation and postoperative complications. Univariate and multiple regression analyses were applied. RESULTS: One-hundred dogs were included, 75 in the ESP group and 25 in the CRI group. Univariate analysis revealed no significant differences between treatment groups in terms of CR, PS, postoperative rescue analgesia, intraoperative and postoperative opioid consumption, or time to first meal intake. However, the multivariate regression analysis indicated that dogs receiving ketamine infusion had higher CR suspected to be nociception-related (p = 0.036), and higher postoperative opioid consumption (p = 0.013). CONCLUSION: Our study suggests that ultrasound-guided ESP block is as effective as intraoperative ketamine infusion providing perioperative analgesia in dogs undergoing thoracolumbar mini-hemilaminectomy for intervertebral disc disease. ESP group showed significantly lower CR suspected to be nociception-related intraoperatively and lower postoperative opioid consumption within the initial 24 hours.

Perioperative management of non-deferrable oncologic surgeries during COVID-19 pandemic in Madrid, Spain. Is it safe?

INTRODUCTION: Surgical treatment during Covid-19 pandemic is controversial. Currently, most clinical guidelines advise to defer surgical patients during the Covid-19 pandemic, although the supporting data is sparse. We assumed that a Covid-19-free hospital, on the back of strong isolation measures and targeted screening, could reduce complications and enable us to continue treating high-risk patients. METHODS: Prospective study with retrospective analysis of 355 patients who had undergone nondeferrable oncological surgery between March 16th, 2020, and April 14th, 2020, at our institution. The aim of the study was to assess the hospital restructuring and surgical protocols to be able to safely handle non-deferrable surgeries during the first wave of the Covid-19 pandemic. We implemented structural changes and an updated surgical-anesthetic protocol in order to isolate Covid-19 patients from other surgical patients. Comprehensive targeted screening for Covid-19 patients was made. PCR tests were requested for suspected Covid-19 patients. We analyzed mortality and complications related to both surgery and Covid-19 during hospital admission and also 15 and 30 days after surgery. We compared it with a sample of similar patients in the pre-pandemic period. RESULTS: Of the 355 patients enrolled in our study, 21 were removed due to Covid-19 infection, leaving a total of 334 patients in our final analysis. Post-operative complications were found in 37 patients (11.07%). Two patients died after surgery (0.6%). At the end of the study, Covid-19-related adverse outcomes were detected in six patients (1.79%). When comparing the complications of our original sample with the complications that occurred in the pre-covid era, we found no statistically significant differences. CONCLUSIONS: Our results show that the surgical treatment of oncologic patients during the Covid-19 pandemic is safe, as long as the hospital performs surgeries under strict isolation measures and a robust screening method. It is necessary to select Covid-19 free hospitals for this matter in this and future pandemics.

[Perioperative management of non-deferrable oncologic surgeries during COVID-19 pandemic in Madrid, Spain. Is it safe?] / Manejo perioperatorio de cirugías oncológicas no diferibles durante la pandemia de covid-19 en Madrid, España ¿Es seguro?

INTRODUCTION: Surgical treatment during COVID-19 pandemic is controversial. Currently, most clinical guidelines advise to defer surgical patients during the COVID-19 pandemic, although the supporting data is sparse. We assumed that a COVID-19-free hospital, on the back of strong isolation measures and targeted screening, could reduce complications and enable us to continue treating high-risk patients. METHODS: Prospective study with retrospective analysis of 355 patients who had undergone nondeferrable oncological surgery between March 16th, 2020, and April 14th, 2020, at our institution. The aim of the study was to assess the hospital restructuring and surgical protocols to be able to safely handle non-deferrable surgeries during the first wave of the COVID-19 pandemic. We implemented structural changes and an updated surgical-anesthetic protocol in order to isolate COVID-19 patients from other surgical patients. Comprehensive targeted screening for COVID-19 patients was made. PCR tests were requested for suspected COVID-19 patients. We analyzed mortality and complications related to both surgery and COVID-19 during hospital admission and also 15 and 30 days after surgery. We compared it with a sample of similar patients in the pre-pandemic period. RESULTS: Of the 355 patients enrolled in our study, 21 were removed due to COVID-19 infection, leaving a total of 334 patients in our final analysis. Post-operative complications were found in 37 patients (11.07%). Two patients died after surgery (0.6%). At the end of the study, COVID-19-related adverse outcomes were detected in six patients (1.79%). When comparing the complications of our original sample with the complications that occurred in the pre-COVID era, we found no statistically significant differences. CONCLUSIONS: Our results show that the surgical treatment of oncologic patients during the COVID-19 pandemic is safe, as long as the hospital performs surgeries under strict isolation measures and a robust screening method. It is necessary to select COVID-19 free hospitals for this matter in this and future pandemics.

Perioperative management of non-deferrable oncologic surgeries during COVID-19 pandemic in Madrid, Spain. Is it safe? / Manejo perioperatorio de cirugías oncológicas no diferibles durante la pandemia de covid-19 en Madrid, España ¿Es seguro?

INTRODUCTION: Surgical treatment during COVID-19 pandemic is controversial. Currently, most clinical guidelines advise to defer surgical patients during the COVID-19 pandemic, although the supporting data is sparse. We assumed that a COVID-19-free hospital, on the back of strong isolation measures and targeted screening, could reduce complications and enable us to continue treating high-risk patients. METHODS: Prospective study with retrospective analysis of 355 patients who had undergone nondeferrable oncological surgery between March 16th, 2020, and April 14th, 2020, at our institution. The aim of the study was to assess the hospital restructuring and surgical protocols to be able to safely handle non-deferrable surgeries during the first wave of the COVID-19 pandemic. We implemented structural changes and an updated surgical-anesthetic protocol in order to isolate COVID-19 patients from other surgical patients. Comprehensive targeted screening for COVID-19 patients was made. PCR tests were requested for suspected COVID-19 patients. We analyzed mortality and complications related to both surgery and COVID-19 during hospital admission and also 15 and 30 days after surgery. We compared it with a sample of similar patients in the pre-pandemic period. RESULTS: Of the 355 patients enrolled in our study, 21 were removed due to COVID-19 infection, leaving a total of 334 patients in our final analysis. Post-operative complications were found in 37 patients (11.07%). Two patients died after surgery (0.6%). At the end of the study, COVID-19-related adverse outcomes were detected in six patients (1.79%). When comparing the complications of our original sample with the complications that occurred in the pre-COVID era, we found no statistically significant differences. CONCLUSIONS: Our results show that the surgical treatment of oncologic patients during the COVID-19 pandemic is safe, as long as the hospital performs surgeries under strict isolation measures and a robust screening method. It is necessary to select COVID-19 free hospitals for this matter in this and future pandemics.

[Bilateral paravertebral block anesthesia for thymectomy by video-assisted thoracoscopy in patients with myasthenia gravis]. / Timectomía por videotoracoscopia asistida con bloqueo anestésico paravertebral bilateral en pacientes miasténicos.

Thymectomy continues to be the treatment of choice for certain patients with myasthenia gravis. As surgical techniques have developed, anesthesiologists have considered the need to adapt anesthetic techniques to improve care of patients undergoing this procedure. We describe the anesthetic management of 2 patients undergoing thymectomy performed with a bilateral thoracoscopic approach. Because it is best to avoid the use of opiates during and after surgery, we performed a bilateral paravertebral thoracic block, inserting the catheters into the paravertebral space on each side to infuse local anesthetics on either side as needed as the operation progressed. Surgery was completed without adverse events and tubes were removed from the tracheas of both patients at the end of the procedures. Bilateral continuous infusion of local anesthetics provided satisfactory analgesia on the following days.

Cartilage and serum levels of nitric oxide in patients with hip osteoarthritis.

OBJECTIVE: To assess whether nitric oxide (NO) is related to cartilage deterioration resulting from osteoarthritis, NO concentrations were analyzed in normal and deteriorated areas of cartilage obtained from femur heads of patients with primary hip osteoarthritis (HOA). METHODS: The concentration of NO in macroscopically deteriorated and non-deteriorated cartilage of femoral heads of patients with HOA at hip replacement surgery was analyzed spectrophotometrically. Serum NO levels were also determined in 16 ambulatory patients with hip OA and in healthy volunteers. RESULTS: NO levels of non-deteriorated areas of femoral head cartilage were significantly lower (3.82+/-1.30 micromol/l; mean +/- SD) than levels of deteriorated cartilage areas (11.07+/-6.48 micromol/l; p<0.01). The surgery HOA group showed serum NO levels (2.64+/-0.32 micromol/l; p<0.0001 vs. healthy group) similar to the ambulatory HOA group levels (2.56+/-0.56 micromol/l; p<0.0001 vs. healthy group). Serum NO concentrations in healthy volunteers were 1.37+/-0.55 micromol/l. CONCLUSION: This study shows increased NO levels in joint cartilage of patients with hip OA. This increase was not homogeneously distributed, but the higher NO levels were found in macroscopically deteriorated areas. The data also suggest that high NO serum levels found in patients with hip OA may be due to joint cartilage destruction.

Experimental (NMR) and Computational (MD) Studies on the Inclusion Complexes of 1-Bromoadamantane with alpha-, beta-, and gamma-Cyclodextrin.

The inclusion complexes between the most commonly used cyclodextrins (alpha-, beta-, and gamma-CD) and 1-bromoadamantane were prepared and studied experimentally by NMR methods and by molecular dynamics simulations (AMBER force field) with solvation. The NMR results suggest host/guest ratios of 2:1, 1:1, and 1:1 for the complexes with alpha-, beta-, and gamma-cyclodextrin, respectively, as well as defined geometries for the complexes. Averaged geometrical data from the molecular dynamics simulations agree with the complexation geometries deduced experimentally.

Effect of acute alcohol ingestion on mineral metabolism and osteoblastic function.

Alcohol abuse can induce osteopenia in some subjects. In order to study the effect of a single dose of alcohol on mineral metabolism and osteoblastic function, we have measured calcium, phosphate, parathyroid hormone midmolecule (PTHm), parathyroid hormone intact molecule (PTHi) and bone-gla-protein (BGP) in serum of 8 healthy men after the ingestion of a single dose of alcohol (0.6 g/kg body weight). Urinary calcium and magnesium were also measured. After alcohol intake, both serum PTHm and PTHi were decreased, as well as serum BGP. Serum phosphate and urinary calcium and magnesium were increased. An inverse significant correlation was found between PTHi and serum phosphate (r = 0.42; p < 0.02). Our data show that acute alcohol ingestion lowers serum PTH and BGP in humans, suggesting an inhibitory effect on parathyroid and osteoblastic function. These changes and the alcohol-induced transient hypercalciuria could contribute to the development of bone disease associated with chronic alcohol abuse.

Association of HLA-DR5 with mucocutaneous lesions in patients with rheumatoid arthritis receiving gold sodium thiomalate.

OBJECTIVE: To investigate the possible association between HLA antigens and adverse reactions to gold sodium thiomalate therapy (GSTM). METHODS: Ninety consecutive patients with rheumatoid arthritis (RA) were studied for possible association between HLA antigens and adverse reactions to GSTM therapy. RESULTS: HLA-DR5 was significantly increased in patients who developed gold induced mucocutaneous lesions. On the other hand, patients with RA carrying B8 and DR3 antigens are of a high risk of developing proteinuria after gold therapy. A very interesting finding was the low incidence of DR7 antigen in patients who developed adverse reactions to GSTM. We also report the relationship between B27 antigen and chrysiasis due to gold therapy. CONCLUSION: Our results support suggestions that the DR7 antigen provides a protective effect against gold toxicity. We also found a strong association between DR5 and mucocutaneous lesions in patients with RA treated with GSTM.

HLA antigens in brucellosis.

106 patients diagnosed as having brucellosis were typed for HLA class I and class II antigens. The number of healthy controls was 272 and 102 for classes I and II, respectively. 17 HLA-A, 31 HLA-B, 7 HLA-C and 8 HLA-DR specificities were studied. The most important finding was a highly significant decrease of the HLA-Cw2 antigen frequency in the patient group compared with the controls. The corrected p value was p less than 0.0001 (Fisher's test). This finding is compatible with the idea that HLA-Cw2 antigen could be a protective factor. No other positive or negative association was observed. There was no significant difference in HLA antigen frequencies between patients with and without joint manifestations. In addition, we did not find an HLA-B27 increase in the group of patients with brucellosis associated spondylarthritis when compared with healthy individuals.