There are few reports of poisoning caused by high-dose intravenous injection of mercury. Its clinical manifestations are diverse and the risk of mortality is high. Currently, the pathogenesis is not clear and the treatment experience is insufficient, leading to difficulties in clinical diagnosis and treatment. In this article, the data of a case of mercury poisoning caused by intravenous self-administration was analyzed and summarized. The patient developed multiple organ dysfunction syndrome after intravenous injection of high-dose mercury. After comprehensive treatment, such as mercury removal, organ support, and infection prevention, the condition was improved. This case suggests that intravenous injection of mercury can cause damage to the functions of multiple organs, such as the heart, lungs, and kidneys. Early treatment and intervention can bring benefits.
一次性静脉注射大剂量汞引起中毒的报道很少，患者临床表现多样且汞致死风险高，目前存在发病机制不明确、治疗经验不足等问题，为临床诊疗及救治工作带来困难。本文对1例静脉注射大剂量汞引起中毒的病例资料进行整理。患者静脉注射大剂量汞后出现多器官功能障碍综合征，经过驱汞治疗、器官支持治疗、防治感染等综合救治后病情好转。提示静脉注射汞会对心脏、肺、肾等多器官功能造成损伤，早期系统干预治疗可以带来获益。.

The use of intravenous cannulas is a common procedure in healthcare. It\'s a common way of accessing the intravenous route for several purposes in patient care. Procedure is fraught with a significant risk of fracture and embolization of cannula that merits immediate intervention. There is paucity of well-defined techniques in literature for retrieval of such fractured cannulas from peripheral veins. A case series highlighting the use of a novel J-flap surgical technique in the management of fractured intravenous cannula in six (6) adult patients by the authors over a 24-month period. The intervention reduces or eliminates the risk of central embolization with its attendant severe consequences and invasive intervention. The learning curve of the technique seems gentle and does not need sophisticated surgical instrumentation.

A woman in her 20s presented to our clinic with a lower gastrointestinal infection. When we administered intravenous antibacterial and vitamin infusions, she developed anaphylaxis. We performed skin tests to investigate the cause, and an intradermal test was positive for a 1% intravenous vitamin complex. We then performed a component-specific test, which was positive for thiamine disulfide phosphate, a vitamin B1 derivative. We therefore diagnosed anaphylaxis due to thiamine disulfide phosphate. No previous reports have described cross-reactivity between vitamin B1 derivatives. In our case, however, the patient tested positive for fluthiamine hydrochloride, suggesting cross-reactivity. Intravenous vitamin complexes are used in daily clinical practice and should be administered with caution because of the possibility of anaphylaxis, although it occurs infrequently.

Chemical burns are often deep with difficult initial clinical evaluation, especially those due to alkalic agents, which have a strong penetrating power. They therefore require specialized care in a Burn Unit. Self-inflicted burns are infrequent but their management represents a real challenge. We report the case of a 47-year-old referred to our Burn Center for the evaluation of a self-inflicted corrosion with an alkalic agent (soda), injected at the crease of the left elbow. The patient, right handed, was a nurse and had notably a psychiatric history of depressive syndrome. We observed a deep, well-defined necrosis area, associated with intense peri-lesional inflammation and extensive cellulitis. Faced with this unusual clinical appearance for a chemical burn, the patient\'s questioning was repeated and the patient finally admitted to having injected himself with a basic caustic product intravenously. Surgical treatment was carried out in two stages: debridement with exposure of vascular and neural structures then coverage with a free anterolateral thigh flap. The postoperative consequences were uneventful with a satisfactory functional result. Factitious disorders are underestimated and often misleading. Among factitious disorders, self-inflicted wounds remain a real challenge requiring multidisciplinary management. Many etiologies exist, among which injection of drugs or substances, in any anatomical localization, leading to variable loss of substance. The use of a free flap for acute extravasation is rare but sometimes essential. The anterolateral thigh flap allows good resurfacing on areas with important functional requirements.

Cases of empyema associated with Histoplasma infection are rarely reported. Here, we discuss a case of Histoplasma-associated empyema successfully treated with amphotericin B intravenous and pleural infusion therapy and multiple medical thoracoscopies. A 57-year-old Chinese woman with preexisting diabetes mellitus and gastric cancer had massive left-sided pleural effusion diagnosed by chest computed tomography. Her pleural effusion was purulent through pleural catheter drainage, and the culture of the pleural fluid showed Escherichia coli and Streptococcus constellation. Histopathology of the thoracoscopic pleural biopsy after hexamine silver and PAS staining supported Histoplasma infection. The patient was treated with intravenous injection and local thoracic irrigation of amphotericin B and continuous oral administration of itraconazole. At the same time, the patient received thoracic cannulation, daily thoracic lavage and thoracoscopy for purulent and necrotic tissue removal three times during hospitalization. The patient\'s pleural effusion and necrotic tissue in the pleural cavity were significantly reduced in a short time, and the clinical symptoms were significantly improved. After discharge, the patient recovered well and had no obvious complications or sequelae. Intravenous injection and local thoracic irrigation of amphotericin B are safe and effective drug therapies to treat fungal-associated empyema such as Histoplasma. Medical thoracoscopy effectively shortens the recovery time of empyema, improving the prognosis and reducing complications.

Tranexamic acid administration into the epidural space has not been previously reported. We describe our experience managing and investigating a drug error involving incorrect route of tranexamic acid administration through an epidural catheter.
A syringe containing tranexamic acid, intended for intravenous bolus and infusion intraoperatively using microbore tubing, was inadvertently attached to an epidural catheter via the Luer-type connector on the microbore tubing and epidural adapter.
Saline lavage of the epidural space may be considered if tranexamic acid has been administered into the epidural space. Early multidisciplinary team involvement combined with repeated postevent neurologic monitoring is recommended to guide therapy. Adoption of neuraxial route-specific connectors, when available, may be warranted to reduce Luer-type misconnections.
RéSUMé: OBJECTIF: L’administration d’acide tranexamique dans l’espace péridural n’a pas été rapportée auparavant. Nous décrivons notre expérience de prise en charge et d’investigation d’une erreur médicamenteuse due à une erreur dans la voie d’administration d’acide tranexamique via un cathéter péridural. CARACTéRISTIQUES CLINIQUES: Une seringue contenant de l’acide tranexamique, destinée à l’administration peropératoire intraveineuse de bolus et de perfusion via des tubulures de microcalibre, a été fixée par inadvertance à un cathéter péridural via un connecteur de type Luer sur la tubulure de microcalibre et l’adaptateur péridural. CONCLUSION: Un lavage salin de l’espace péridural peut être envisagé si de l’acide tranexamique a été administré dans l’espace péridural. La participation rapide d’une équipe multidisciplinaire combinée à un monitorage neurologique répété après l’événement sont recommandés pour guider le traitement. L’adoption de connecteurs spécifiques à la voie neuraxiale, lorsqu’ils sont disponibles, pourrait être utile pour réduire les erreurs de connexion de type Luer.

BACKGROUND: Noncardiogenic pulmonary edema (NCPE) is a rare and life-threatening allergy-like reaction to the intravascular injection of a nonionic radiographic agent. We first describe a very rare case of fatal NCPE after the intravenous injection of nonionic, iso-osmolar iodine contrast media. Case presentation A 55-year-old male patient was admitted to the hospital with esophageal cancer. After the intravenous administration of 100 mL iodixanol, the patient first exhibited digestive tract symptoms, including abdominal pain, diarrhea, and vomiting, with no dyspnea, rash, itching, or throat edema. He received anti-allergy treatment, but his symptoms did not improve; instead, he further developed pulmonary edema. Arterial blood gas analysis results were as follows: pH, 7.08; PO2, 70 mm Hg; PCO2, 40 mm Hg; and SaO2, 52%. Then, the patient received emergent tracheal intubation and ventilation to assist breathing, and he was transferred to the intensive care unit (ICU) for further treatment. In the ICU, the patient developed shock and respiratory and circulatory failure; therefore, he received shock resuscitation, acidosis correction, muscle relaxants to lower the work of breathing, and cardiotonic therapy. The patient eventually died. During the ICU period, emergency bedside color ultrasound showed a diffuse B line in both lungs, and the size of the cardiac cavity was normal, but the ventricular rate was extremely fast. Chest radiography showed pulmonary edema with a normal cardiac silhouette, and the brain natriuretic peptide (BNP) level was in the normal range.
CONCLUSIONS: NCPE is a rare and critical allergy-like reaction to the use of a nonionic iso-osmolar radiocontrast contrast medium. Clinicians should pay very close attention to digestive tract manifestations during the medical observation of patients, as gastrointestinal manifestations may be the prodromal symptoms of NCPE caused by iso-osmolar contrast medium injection.

UNASSIGNED: There are reports of AA amyloidosis associated with intravenous and/or subcutaneous injection of street drugs, such as heroin and cocaine. Most reports describe patients with substance use disorder, renal amyloidosis and concurrent viral infections, such as hepatitis and/or human immunodeficiency virus. Herein, we present a case of systemic AA amyloidosis and sepsis in a 34-year-old woman with a history of intravenous injection of oral prescription medications (as evidenced by excipient lung disease) who had no known history of human immunodeficiency virus nor of hepatitis B or C. Our case shows the broader spectrum of pathology that can occur with the misuse of prescription medications.

There is increasing evidence for the use of bisphosphonates to treat Complex Regional Pain Syndrome in adults. However, there are scarce data for their use in children with Complex Regional Pain Syndrome.
This retrospective case series aimed to analyze the effects of intravenous bisphosphonate use in children and adolescents with Complex Regional Pain Syndrome enrolled in a multidimensional pain treatment program.
We analyzed the data of 16 patients (15 females and 1 male, mean age 14 ± 3 years) who received infusions of zoledronic acid (0.015 ± 0.0044mg/kg), pamidronate (0.72 ± 0.17mg/kg), or both depending on their initial response between October 2014 and December 2019. The primary endpoint of the study was the patient\'s global impression of change. Secondary outcomes included pain intensity, physical function, role function (school attendance), need for pain medications, and adverse effects.
Nine of 16 patients reported meaningful improvements (global impressions of change of 84% or higher) at a median follow-up time of 16 (8-21) months after their last infusion of bisphosphonates. There were also meaningful reductions in pain intensity and the need for pain medications. There was an increase in the proportion of patients with minimal or without physical disability, and almost all patients normalized their school activities. Thirteen patients (81%) reported adverse effects, mostly flu-like symptoms, for a few days after the infusion.
The use of bisphosphonate infusions may represent an effective treatment option for children with Complex Regional Pain Syndrome, not responding to multidisciplinary pain treatment programs.

BACKGROUND: Chronic disseminated intravascular coagulation (DIC) associated with thoracic aortic aneurysm is characterized by enhanced fibrinolysis and is thought to be stable in the compensated/asymptomatic stage, with few bleeding symptoms. However, DIC can lead to decompensated/hemorrhagic stage disseminated intravascular coagulation, resulting in severe bleeding diathesis, and there is currently no established strategy for treatment of DIC in aortic aneurysms.
METHODS: A 77-year-old woman underwent angiography and cardiac catheterization, before descending aortic replacement surgery. She developed DIC in postprocedure week 2 with extensive, uncontrollable massive subcutaneous hemorrhage.
METHODS: Her acute-phase DIC score was 7 points, and the risk of mortality within 30 days after surgery according to the JapanSCORE was estimated to be 33.6%.
METHODS: Therapy was a combination of recombinant human soluble thrombomodulin (rhTM) and an aortic stent-graft treatment.
RESULTS: Short-term improvements were seen in both DIC and bleeding diathesis. The thoracic aortic aneurysm with severe DIC was eventually corrected by administration of rhTM.
CONCLUSIONS: We report the use of rhTM as an effective, novel anticoagulant drug with anti-inflammatory activity for treating DIC with suppressed fibrinolysis, which is typically associated with sepsis. In patients with a high hemorrhagic diathesis, in whom preoperative control of DIC cannot be achieved with conventional anticoagulation and radical surgical repair cannot be performed, a combination of rhTM and endovascular therapy may be a powerful new treatment option.