Fulminant infectious endocarditis caused by Staphylococcus aureus with pseudoaneurysms in the superior mesenteric, hepatic, and popliteal arteries: a case report

Staphylococcus aureus infectious endocarditis has a high mortality, major causes of death being cardiac failure, systemic embolism, and sepsis. Pseudoaneurysms, a rare complication of this infection, are not invariably fatal with appropriate treatment. A previously healthy 32-year-old man was found...

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Main Authors: Shoko Merrit Yamada, MD, PhD, Takaki Hayashi, MD, PhD, Aya Fuchioka, MD, Tatsuya Aso, MD, PhD, Mikiko Takahashi, MD, PhD
Format: Article
Language:English
Published: Elsevier 2022-10-01
Series:Radiology Case Reports
Subjects:
Online Access:http://www.sciencedirect.com/science/article/pii/S1930043322006239
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author Shoko Merrit Yamada, MD, PhD
Takaki Hayashi, MD, PhD
Aya Fuchioka, MD
Tatsuya Aso, MD, PhD
Mikiko Takahashi, MD, PhD
author_facet Shoko Merrit Yamada, MD, PhD
Takaki Hayashi, MD, PhD
Aya Fuchioka, MD
Tatsuya Aso, MD, PhD
Mikiko Takahashi, MD, PhD
author_sort Shoko Merrit Yamada, MD, PhD
collection DOAJ
description Staphylococcus aureus infectious endocarditis has a high mortality, major causes of death being cardiac failure, systemic embolism, and sepsis. Pseudoaneurysms, a rare complication of this infection, are not invariably fatal with appropriate treatment. A previously healthy 32-year-old man was found to have multiple cerebral infarctions, and infectious endocarditis with mitral valve vegetation was diagnosed by echocardiography. Because methicillin-resistant Staphylococcus aureus (MRSA) was identified from blood cultures, vancomycin was administered. Massive intracerebral hemorrhage in the left temporo-occipital lobe occurred in the patient on the 3rd day after admission, and the hematoma was completely removed surgically. Another hemorrhage was identified in the right occipital region on the 7th hospital day, which led the patient deep coma. Blood cultures on the 10th day were negative for MRSA; however, imaging studies revealed pseudoaneurysms in the superior mesenteric, hepatic, and left popliteal arteries 3 weeks after admission. No surgical indication was applied to these pseudoaneurysms because the patient remained comatose. On the 78th day after admission, the patient's blood pressure suddenly dropped and he died. Autopsy demonstrated massive bleeding in the abdominal cavity caused by rupture of the superior mesenteric artery pseudoaneurysm. Our patient's clinical course was fulminant, his endocarditis being complicated by cerebral infarctions, intracranial hemorrhages, and multiple pseudoaneurysms within 3 weeks of admission. In retrospect, he may have survived if emergency resection of the mitral valve vegetation had been performed on the first or second day of admission; however, the in-hospital mortality rate after such surgery is high.
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spelling doaj.art-3b589e254ee0499183333a3c059da0582022-12-22T04:02:48ZengElsevierRadiology Case Reports1930-04332022-10-01171038413846Fulminant infectious endocarditis caused by Staphylococcus aureus with pseudoaneurysms in the superior mesenteric, hepatic, and popliteal arteries: a case reportShoko Merrit Yamada, MD, PhD0Takaki Hayashi, MD, PhD1Aya Fuchioka, MD2Tatsuya Aso, MD, PhD3Mikiko Takahashi, MD, PhD4Department of Neurosurgery, Teikyo University Mizonokuchi Hospital, 5-1-1 Futago, Takatsu-ku, Kawasaki, Kanagawa 213-8507, Japan; Corresponding author.Department of Radiology, Teikyo University Mizonokuchi Hospital, 5-1-1 Futago, Takatsu-ku, Kawasaki, Kanagawa 213-8507, JapanDepartment of Radiology, Teikyo University Mizonokuchi Hospital, 5-1-1 Futago, Takatsu-ku, Kawasaki, Kanagawa 213-8507, JapanDepartment of Diagnostic pathology, Teikyo University Mizonokuchi Hospital, 5-1-1 Futago, Takatsu-ku, Kawasaki, Kanagawa 213-8507, JapanDepartment of Diagnostic pathology, Teikyo University Mizonokuchi Hospital, 5-1-1 Futago, Takatsu-ku, Kawasaki, Kanagawa 213-8507, JapanStaphylococcus aureus infectious endocarditis has a high mortality, major causes of death being cardiac failure, systemic embolism, and sepsis. Pseudoaneurysms, a rare complication of this infection, are not invariably fatal with appropriate treatment. A previously healthy 32-year-old man was found to have multiple cerebral infarctions, and infectious endocarditis with mitral valve vegetation was diagnosed by echocardiography. Because methicillin-resistant Staphylococcus aureus (MRSA) was identified from blood cultures, vancomycin was administered. Massive intracerebral hemorrhage in the left temporo-occipital lobe occurred in the patient on the 3rd day after admission, and the hematoma was completely removed surgically. Another hemorrhage was identified in the right occipital region on the 7th hospital day, which led the patient deep coma. Blood cultures on the 10th day were negative for MRSA; however, imaging studies revealed pseudoaneurysms in the superior mesenteric, hepatic, and left popliteal arteries 3 weeks after admission. No surgical indication was applied to these pseudoaneurysms because the patient remained comatose. On the 78th day after admission, the patient's blood pressure suddenly dropped and he died. Autopsy demonstrated massive bleeding in the abdominal cavity caused by rupture of the superior mesenteric artery pseudoaneurysm. Our patient's clinical course was fulminant, his endocarditis being complicated by cerebral infarctions, intracranial hemorrhages, and multiple pseudoaneurysms within 3 weeks of admission. In retrospect, he may have survived if emergency resection of the mitral valve vegetation had been performed on the first or second day of admission; however, the in-hospital mortality rate after such surgery is high.http://www.sciencedirect.com/science/article/pii/S1930043322006239Infectious endocarditisStaphylococcusPseudoaneurysmAutopsy
spellingShingle Shoko Merrit Yamada, MD, PhD
Takaki Hayashi, MD, PhD
Aya Fuchioka, MD
Tatsuya Aso, MD, PhD
Mikiko Takahashi, MD, PhD
Fulminant infectious endocarditis caused by Staphylococcus aureus with pseudoaneurysms in the superior mesenteric, hepatic, and popliteal arteries: a case report
Radiology Case Reports
Infectious endocarditis
Staphylococcus
Pseudoaneurysm
Autopsy
title Fulminant infectious endocarditis caused by Staphylococcus aureus with pseudoaneurysms in the superior mesenteric, hepatic, and popliteal arteries: a case report
title_full Fulminant infectious endocarditis caused by Staphylococcus aureus with pseudoaneurysms in the superior mesenteric, hepatic, and popliteal arteries: a case report
title_fullStr Fulminant infectious endocarditis caused by Staphylococcus aureus with pseudoaneurysms in the superior mesenteric, hepatic, and popliteal arteries: a case report
title_full_unstemmed Fulminant infectious endocarditis caused by Staphylococcus aureus with pseudoaneurysms in the superior mesenteric, hepatic, and popliteal arteries: a case report
title_short Fulminant infectious endocarditis caused by Staphylococcus aureus with pseudoaneurysms in the superior mesenteric, hepatic, and popliteal arteries: a case report
title_sort fulminant infectious endocarditis caused by staphylococcus aureus with pseudoaneurysms in the superior mesenteric hepatic and popliteal arteries a case report
topic Infectious endocarditis
Staphylococcus
Pseudoaneurysm
Autopsy
url http://www.sciencedirect.com/science/article/pii/S1930043322006239
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