Widespread septic embolization in injection drug use mitro-aortic infective endocarditis as a remote cause of death.

Injection drug use-related infective endocarditis (IDU-IE) assumes peculiar epidemiological, pathogenetic, and prognostic characteristics that allow to consider it a distinct nosological entity, as well as a current problem of considerable social weight. Incidence is reasonably underestimated because diagnosis is often accidental in postmortem examination when drug-related death is suspected. In many cases, postmortem toxicological examinations are negative for acute drug abuse, and findings of infective endocarditis became relevant in the explanation of the mechanism of death. Extracardiac involvement of infective endocarditis is rarely reported as fatal. Fragmentation and embolization of bacterial vegetations can be associated with parenchymal infarcts, systemic spread of the infectious process by formation of an abscess. A case of septic shock as a consequence of the constant bacteremia determined by the continuous proliferation and release of bacteria into the circulation is presented in an injection drug user with left-sided endocarditis and widespread septic embolization. Authors reviewed forensic and medical literature and promote epidemiological value of medical and forensic autopsy. Extracardiac involvement of infective endocarditis may represent a remote and alternative cause of death in injection drug users, and an early diagnosis can be relevant for prognosis. Postmortem examination still represents a valuable opportunity of learning for clinicians and improving diagnostic accuracy with injection drug users. A call for changing of attitudes and practice toward autopsy is finally demanded.

A unique case of Lemierre's syndrome status post blunt cervical trauma.

BACKGROUND: Lemierre's syndrome is a rare but potentially fatal condition. The course is characterized by acute tonsillopharyngitis, bacteremia, internal jugular vein thrombosis, and septic embolization. There have been some cases secondary to penetrating trauma to the neck. Literature review has yielded no cases secondary to blunt neck trauma in the absence of oropharyngeal injury. We aim to shed light on this unique cause of Lemierre's syndrome, so as to raise the index of suspicion for clinicians working up patients with blunt cervical trauma. METHODS: We present a case of a 25-year-old male restrained driver who presented with left neck and shoulder pain with a superficial abrasion to the left neck from the seatbelt who was discharged same day by the Emergency Room physicians. He returned to the Emergency Department two days later with abdominal pain. As a part of his repeat evaluation, a set of blood cultures were sent and was sent home that day. The patient was called back to the hospital one day later as preliminary blood cultures were positive for Gram positive cocci and Gram negative anaerobes. Computerized tomography scan of the neck revealed extensive occlusive left internal jugular vein thrombosis and fluid collections concerning for abscesses, concerning for septic thrombophlebitis. The patient continued to decompensate, developing severe sepsis complicated by disseminated intravascular coagulation. RESULTS: The patient underwent a left neck exploration with en bloc resection of the left internal jugular vein, drainage of abscesses deep to the sternocleidomastoid, and washout/debridement of necrotic tissue. Direct laryngoscopy at the time of surgery revealed no injury to the aerodigestive tract. Wound cultures were consistent with blood cultures and grew Fusobacterium necrophorum, Staphylococcus epidermidis, and Methicillin-resistant staphylococcus aureus. The patient underwent two subsequent operative wound explorations without any evidence of residual infection. The patient was discharged home on postoperative day 13 on a course of antibiotics and aspirin. CONCLUSION: This case illustrates the importance of diagnosis of Lemierre's syndrome after an unconventional inciting event (blunt cervical trauma) and appropriate treatment.

Infective endocarditis complicated with coronary artery septic embolization: is it worth to be mentioned? Case presentation and review of the literature.

Coronary artery septic embolization is a rare, but severe complication of infective endocarditis involving the leftside of the valves. The first case mentioned in the literature was a postmortem finding of a left anterior descending coronary artery occlusion by a vegetation fragment. Since this case, there have been several therapeutic strategies published with this clinical setting including medical treatment, percutaneous coronary angioplasty addressing coronary occlusion, surgical intervention for both the infected valve and coronary embolization, and hybrid procedures with transcatheter septic embolus aspiration followed by surgical valvular interventions. Out of the three interventions mentioned, the latter provided the best results and was in concordance with results observed in a case of mitral valve infected endocarditis complicated with acute occlusion of the left anterior descending coronary artery in patient whose comorbidities included hypertrophic obstructive cardiomyopathy. A transcatheter left anterior descending coronary artery embolus aspiration was performed , followed by a surgical mitral valve replacement and septal myectomy with an uneventful postoperative course. Although rare, this severe complication of infective endocarditis has a specific clinical course and therapeutic strategy, and in our opinion, it could be mentioned as a separate entity among embolic complications of infective endocarditis in future guidelines. Previously published cases suggest that the hybrid intervention might be the therapy of choice for this clinical setting; however, larger studies are necessary for confirmation.

Incipient empyema as an embolic complication of group A streptococcal septic arthritis in a patient with concomitant influenza B infection.

A 43-year-old healthy male presented with left ankle septic arthritis. Surgical specimens cultured Streptococcus pyogenes (group A Streptococcus, GAS) and IV benzylpenicillin was commenced. In the setting of coryzal symptoms, a chest radiograph and nasopharyngeal swab revealed a left-sided pleural effusion and influenza B infection, respectively. Persisting fevers, rising CRP, and increasing breathlessness led to repeat chest radiography showing a rapidly enlarging left-sided effusion. Following intercostal catheter insertion with intrapleural fibrinolytic therapy, 6 L of haemorrhagic fluid was drained leading to defervescence and clinical improvement. At follow-up 4 weeks later, he was asymptomatic with a normal chest radiograph. Similar to previous reported cases of GAS empyema, this case was associated with concurrent viral respiratory tract infection, but is unusual as it arose through haematogenous seeding from an extra-thoracic source. This case reminds clinicians to be aware of the strongly pyogenic nature of GAS and its significance as a potential cause of pleural infection, especially in patients with concomitant viral respiratory infections.

Mitral Valve Infective Endocarditis Complicated With Coronary Artery Embolization.

Infective endocarditis is a multisystem and potentially fatal disease. Systemic embolization is a relatively common complication, the spleen and central nervous system being the most frequent sites for septic emboli formation. Coronary artery septic embolization is extremely uncommon and its management remains controversial. We present the case of a 50-year-old male diagnosed with mitral valve infective endocarditis complicated with spleen and central nervous system embolization, who developed acute myocardial infarction two weeks after disease onset. The patient was successfully treated with combined mitral valve replacement and coronary artery bypass grafting.

Pulmonary embolism and internal jugular vein thrombosis as evocative clues of Lemierre's syndrome: A case report and review of the literature.

Lemierre's syndrome (LS) is an uncommon condition with oropharyngeal infections, internal jugular vein thrombosis, and systemic metastatic septic embolization as the main features. Fusobacterium species, a group of strictly anaerobic Gram negative rod shaped bacteria, are advocated to be the main pathogen involved. We report a case of LS complicated by pulmonary embolism and pulmonary septic emboli that mimicked a neoplastic lung condition. A Medline search revealed 173 case reports of LS associated with internal jugular vein thrombosis that documented the type of microorganism. Data confirmed high prevalence in young males with Gram negative infections (83.2%). Pulmonary embolism was reported in 8.7% of cases mainly described in subjects with Gram positive infections (OR = 9.786; 95%CI: 2.577-37.168, P = 0.001), independently of age and gender. Only four fatal cases were reported. LS is an uncommon condition that could be complicated by pulmonary embolism, especially in subjects with Gram positive infections.

Non-traumatic subdural hematoma secondary to septic brain embolism: A rare cause of unexpected death in a drug addict suffering from undiagnosed bacterial endocarditis.

Acute subdural hematomas are mostly due to blunt traumatization of the head. In rare instances, subdural bleeding occurs without evidence of a previous trauma following spontaneous hemorrhage, e.g. from a ruptured aneurysm or an intracerebral hematoma perforating the brain surface and the arachnoid. The paper presents the morphological, microbiological and toxicological findings in a 38-year-old drug addict who was found by his partner in a dazed state. When brought to a hospital, he underwent trepanation to empty a right-sided subdural hematoma, but he died already 4h after admission. Autopsy revealed previously undiagnosed infective endocarditis of the aortic valve as well as multiple infarctions of brain, spleen and kidneys obviously caused by septic emboli. The subdural hematoma originated from a subcortical brain hemorrhage which had perforated into the subdural space. Microbiological investigation of the polypous vegetations adhering to the aortic valve revealed colonization by Streptococcus mitis and Klebsiella oxytoca. According to the toxicological analysis, no psychotropic substances had contributed to the lethal outcome. The case reported underlines that all deaths of drug addicts should be subjected to complete forensic autopsy, as apart from intoxications also natural and traumatic causes of death have to be taken into consideration.

[Gemella endocarditis: an aggressive entity]. / Endocardite por Gemella: uma entidade agressiva.

The authors present a rare case of subacute endocarditis caused by Gemella morbillorum. A 72-year-old man, with a history of hypertension, aortic valve disease and upper and lower endoscopy six months previously, was admitted due to fever and abdominal pain. He also complained of long-standing dyspnea on exertion and petechiae on his lower limbs. Imaging scans showed a consolidation in the lower left lung field, a splenic infarct and a left subphrenic abscess. Transthoracic echocardiogram findings were highly suggestive of endocarditis affecting three valves, with destruction of the mitral valve anterior leaflet. G. morbillorum was identified in three blood cultures and was considered the etiologic pathogen. Due to the patient's worsening condition, he underwent cardiac surgery, aiming to control the infection and to resolve the associated mechanical complications. This case highlights the need for a complete and thorough history to arrive at likely diagnostic hypotheses that, together with complementary exams, will lead to correct diagnosis and the prompt institution of appropriate therapy.

Acute Limb Ischemia: A rare and devastating complication of infective Endocarditis

Introduction@#In contrast to embolic events to the brain, lungs and spleen which have been comprehensively discussed in literature, acute limb ischemia (ALI) due to septic embolism (SE) from infective endocarditis (IE) are uncommonly reported. There have been no reported cases of ALI as a complication of IE among Filipinos to date making this case report the first in our country@*Case Presentation@#We report two cases of communityacquired native valve endocarditis caused by streptococcus spp. and enterococcus faecalis. Both patients had large and mobile vegetations in the mitral valve and aortic valve respectively on transthoracic echocardiography. The first one developed ALI (IIa) on the R leg after the initiation of antibiotics. The second case presented with ALI (IIa) on the R leg on admission. They were given the appropriate antibiotics and received systemic anticoagulation with heparin. The first case underwent successful emergency embolectomy on the R leg but developed new-onset ALI on the L leg and refused further intervention. Embolectomy was also recommended on the second patient who also re-fused any intervention. Despite maximal medical management, both patients subsequently expired@*Conclusion@#Infective endocarditis (IE) patients are at risk to develop SE before or during the initiation of appropriate antibiotics. ALI is a life threatening extra cardiac complication of IE. Early recognition and prompt aggressive management are therefore imperative.