A&A Practice最新文献

A patient with gunshots within inches of the skin developed intraoperative vasodilatory hypotension and methemoglobinemia, both recognized consequences of nitrite poisoning. A 1- mg/kg dose of methylene blue transiently and partially reversed methemoglobinemia, but the color of the methylene blue faded rapidly, consistent with bleaching of methylene blue by nitrite in vivo. Methylene blue did not raise blood pressure, consistent with inhibition of nitric oxide (NO) synthase. Because NO production from nitrite uses an NO synthase (NOS)-independent pathway, methylene blue is expected to have little effect on reversing hypotension from nitrite poisoning. Consider nitrite toxicity in gunshot patients with refractory vasodilatory hypotension and elevated methemoglobin.

Cutis aplasia is a rare condition characterized by skin and subcutaneous tissue defects. Researchers have previously described both conservative and surgical management methods. We report herein the case of a neonate with extensive cutis aplasia involving 37% of the total body surface area. Due to the risk of meningitis and catastrophic hemorrhage associated with scalp defects, she underwent staged surgical procedures with skin harvesting and synthetic skin application, followed by the application of cultured epithelial autografts. This report highlights the challenges in temperature and fluid management as well as intraoperative positioning in a neonate with cutis aplasia.

Delirium is common in patients undergoing cardiac surgery, and venous congestion has been reported as an important risk factor. We report a 69-year-old patient who developed postoperative delirium in the intensive care unit following aortic valve replacement surgery. The postoperative course was complicated by delirium for which echographic signs of venous congestion on the portal and the renal but also the femoral veins and their resolution correlated with the course of delirium. The use of common femoral vein Doppler as a simple bedside technique to predict and identify congestive delirium has not been reported before.

Remimazolam is a recently approved benzodiazepine sedative. We report a case of a 72-year-old man who experienced a cardiac arrest due to severe anaphylaxis immediately after general anesthesia induction. Based on the results of skin tests, including those for dextran 40, an excipient in the remimazolam solution, and a review of drugs given during 3 anesthetics, remimazolam was identified as the probable causative agent. Although remimazolam is structurally similar to midazolam, the patient was not allergic to midazolam as demonstrated before and after anaphylaxis. This report highlights the potential risk of allergic reactions to remimazolam.

Deep infections of spinal cord stimulator devices usually result in explantation, as recommended by some professional societies. However, alternative options should be explored to avoid potential complications that are associated with explantation, and possibly additional procedures required in consideration of reimplantation. In this case, the patient presented with wound dehiscence after implantation. There was suspicion for deep wound infection based on a wound culture that was positive for Staphylococcus aureus, but no purulent material was noted on further inspection. The patient was treated with standard wound-care management and oral antibiotics without removing the device, and recovered while preserving the original system.

The function of renal allografts in the perioperative period is partly dependent on minimizing hemodynamic instability. We have developed hemodynamic monitoring software-named the "pressure field"-that was utilized in a 68-year-old high-risk kidney transplant recipient. The "pressure field" was used to individualize fluid and drug administration and replicate the preoperative hemodynamics. The patient received net zero fluid intraoperatively and had an uneventful postoperative course. We found the pressure field method helpful to manage perioperative hemodynamics in this high-risk patient.

Ultrasound-guided scalp blocks may revolutionize regional anesthesia for neurosurgery. In this report, we demonstrate that ultrasound-guided scalp blocks can be used effectively for a craniotomy. A 48-year-old patient with a brain tumor at the motor cortex was scheduled for an awake craniotomy. Ultrasound-guided scalp blocks targeting the bilateral supraorbital, supratrochlear, zygomaticotemporal, auriculotemporal, greater auricular, lesser occipital, greater occipital, and third occipital nerves were performed. A total of 29 mL of levobupivacaine 0.3% was used. No additional local anesthetic agent was given for skull pinning, skin incision, or the craniotomy. Postoperatively, the patient remained pain-free, and she was discharged without complications.

This report describes a patient with Goldenhar syndrome undergoing anesthesia for whom Macintosh videolaryngoscopy failed, as the epiglottis was adhered to the posterior pharynx and could not be lifted with a tracheal introducer (Cormack-Lehane grade 3B). Hyperangulated videolaryngoscopy revealed only the arytenoids (Cormack-Lehane grade 2B), even after direct lifting of the epiglottis, and endotracheal tube advancement failed due to unclear tissue resistance. Hyperangulated videolaryngoscopy was combined with a tube-mounted camera (VivaSight single lumen tube). The combination of both camera perspectives was successfully used to allow placement of the endotracheal tube underneath the epiglottis and through the vocal cords.

High-frequency jet ventilation (HFJV) can reduce organ movement that otherwise complicates percutaneous image-guided ablation (IGA) procedures. This study describes feasibility and safety of the technique in routine use. We describe our method for the use of HFJV and present 169 consecutive cases, including IGA of tumors of the lung, liver, kidney, and pancreas. Intended oncological treatment was delivered in all cases and HFJV used for the duration of treatment in all except one case. We describe the characteristics of patients, procedures, and adverse events. It is feasible to use HFJV as the routine standard of care for IGA.