A Case of Alveolar Bleeding from Clotting Abnormality by Cefmetazole

Cephalosporins are one of the most commonly used first-line antibiotics. In this report, we describe the case of a patient who developed alveolar bleeding due to clotting abnormality following the use of cefmetazole, one of cephalosporins containing an N-methylthiotetrazole (NMTT) side chain. Compar...

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Main Authors: Eri Nakano, Tsubasa Fukuoka, Nao Takeuchi, Tomoyuki Seki, Michihiro Tamai, Makoto Araki
Format: Article
Language:English
Published: Wiley 2019-01-01
Series:Case Reports in Medicine
Online Access:http://dx.doi.org/10.1155/2019/3574064
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author Eri Nakano
Tsubasa Fukuoka
Nao Takeuchi
Tomoyuki Seki
Michihiro Tamai
Makoto Araki
author_facet Eri Nakano
Tsubasa Fukuoka
Nao Takeuchi
Tomoyuki Seki
Michihiro Tamai
Makoto Araki
author_sort Eri Nakano
collection DOAJ
description Cephalosporins are one of the most commonly used first-line antibiotics. In this report, we describe the case of a patient who developed alveolar bleeding due to clotting abnormality following the use of cefmetazole, one of cephalosporins containing an N-methylthiotetrazole (NMTT) side chain. Compared to other antibiotics, cephalosporins with an NMTT side chain cause a higher degree of bleeding events. The bleeding tendency is caused by the depletion of vitamin K-dependent clotting factors via inhibition of the vitamin K epoxide reductase. This mechanism of action is the same as warfarin. Recent years have seen an increase in the number of patients using direct oral anticoagulants that do not require coagulation tests. As a consequence, there may be an increase in the number of bleeding events due to anticoagulant drugs and such antibiotics coprescription. Therefore, this case is an instructive lesson.
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id doaj-art-2e81c2dea5c34aa4be78eb5fc414b3a1
institution Kabale University
issn 1687-9627
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language English
publishDate 2019-01-01
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series Case Reports in Medicine
spelling doaj-art-2e81c2dea5c34aa4be78eb5fc414b3a12025-02-03T06:10:53ZengWileyCase Reports in Medicine1687-96271687-96352019-01-01201910.1155/2019/35740643574064A Case of Alveolar Bleeding from Clotting Abnormality by CefmetazoleEri Nakano0Tsubasa Fukuoka1Nao Takeuchi2Tomoyuki Seki3Michihiro Tamai4Makoto Araki5Department of Internal Medicine, Suwa Central Hospital, Chino, Nagano, JapanDepartment of Internal Medicine, Suwa Central Hospital, Chino, Nagano, JapanDepartment of Internal Medicine, Suwa Central Hospital, Chino, Nagano, JapanDepartment of Internal Medicine, Suwa Central Hospital, Chino, Nagano, JapanDepartment of Internal Medicine, Suwa Central Hospital, Chino, Nagano, JapanDepartment of Internal Medicine, Suwa Central Hospital, Chino, Nagano, JapanCephalosporins are one of the most commonly used first-line antibiotics. In this report, we describe the case of a patient who developed alveolar bleeding due to clotting abnormality following the use of cefmetazole, one of cephalosporins containing an N-methylthiotetrazole (NMTT) side chain. Compared to other antibiotics, cephalosporins with an NMTT side chain cause a higher degree of bleeding events. The bleeding tendency is caused by the depletion of vitamin K-dependent clotting factors via inhibition of the vitamin K epoxide reductase. This mechanism of action is the same as warfarin. Recent years have seen an increase in the number of patients using direct oral anticoagulants that do not require coagulation tests. As a consequence, there may be an increase in the number of bleeding events due to anticoagulant drugs and such antibiotics coprescription. Therefore, this case is an instructive lesson.http://dx.doi.org/10.1155/2019/3574064
spellingShingle Eri Nakano
Tsubasa Fukuoka
Nao Takeuchi
Tomoyuki Seki
Michihiro Tamai
Makoto Araki
A Case of Alveolar Bleeding from Clotting Abnormality by Cefmetazole
Case Reports in Medicine
title A Case of Alveolar Bleeding from Clotting Abnormality by Cefmetazole
title_full A Case of Alveolar Bleeding from Clotting Abnormality by Cefmetazole
title_fullStr A Case of Alveolar Bleeding from Clotting Abnormality by Cefmetazole
title_full_unstemmed A Case of Alveolar Bleeding from Clotting Abnormality by Cefmetazole
title_short A Case of Alveolar Bleeding from Clotting Abnormality by Cefmetazole
title_sort case of alveolar bleeding from clotting abnormality by cefmetazole
url http://dx.doi.org/10.1155/2019/3574064
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