Dataset Information

Getting to a Man's Heart through His Colon.

ABSTRACT: A 69-year-old man presented with a progressively enlarging pulsatile mass in the left side of his chest. Because of a history of an ischemic cardiomyopathy, he had been randomized in 2003 to undergo coronary artery bypass grafting with a Dor procedure, as part of the Surgical Treatment for Ischemic Heart Failure (STICH) trial. Our patient's imaging studies, including a thoracic computed tomogram and transthoracic echocardiogram, were now of concern for left ventricular pseudoaneurysm. He was taken immediately for surgical exploration. Purulent material, with empyema, extended from the anterior chest wall through the chest cavity into the mediastinum, with communication into the pericardial space. Notably, there was no compromise of the left ventricular cavity, and there was no pseudoaneurysm. The chest was copiously irrigated before closure. The epicardial patch placed 10 years earlier in the STICH trial was not thought to be the nidus of the abscess and was therefore not removed. Three months later, the patient presented again, this time with hemorrhagic shock and bleeding from his left anterior thoracotomy site, which we then re-entered. He was found to have a left ventricular pseudoaneurysm with disruption of the ventricular apex. The epicardial felt-and-Dacron patch, placed 10 years previously during his Dor procedure, was found to be infected with Clostridium difficile and was removed. The left ventricular apex was repaired. Whereas C. difficile bacteremia is rare, the seeding of prosthetic cardiac material with delayed presentation, as in this case, is extraordinarily uncommon.

SUBMITTER: Samsky MD

PROVIDER: S-EPMC4845564 | biostudies-literature | 2016 Apr

REPOSITORIES: biostudies-literature

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Getting to a Man's Heart through His Colon.

Samsky Marc D MD DeVore Adam D AD Durkin Michael M Stout Jason E JE Velazquez Eric J EJ Milano Carmelo A CA

Texas Heart Institute journal 20160401 2

A 69-year-old man presented with a progressively enlarging pulsatile mass in the left side of his chest. Because of a history of an ischemic cardiomyopathy, he had been randomized in 2003 to undergo coronary artery bypass grafting with a Dor procedure, as part of the Surgical Treatment for Ischemic Heart Failure (STICH) trial. Our patient's imaging studies, including a thoracic computed tomogram and transthoracic echocardiogram, were now of concern for left ventricular pseudoaneurysm. He was tak ...[more]

PMID: 27127437

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Project description:Background: We determined the predictive accuracy of penile bacteria for incident BV in female sex partners. In this prospective cohort, we enrolled Kenyan men aged 18-35 and their female sex partners aged 16 and older. We assessed BV at baseline, 1, 6, and 12 months. Incident BV was defined as a Nugent score of 7-10 at a follow-up visit, following a Nugent score of 0-6 at baseline. Amplification of the V3-V4 region of the bacterial 16S rRNA gene was performed on meatal and glans/coronal sulcus swab samples. Majority vote classifier combined the decisions of three machine learning classification algorithms (Random Forest, Support Vector Machine, K Nearest Neighbor). We report the estimate cross-validation predictive accuracy for incident BV based on baseline penile taxa. Results: The incidence of BV was 31% among 168 couples in which the woman did not have BV at baseline: 37.3% if the man was uncircumcised vs. 26.3% if the man was circumcised. Incident BV occurred at 1 month (n = 23), 6 months (n = 20), 12 months (n = 9). The predictive capacity of meatal taxa was high: sensitivity (80.7%), specificity (74.6%), accuracy (77.5%), area under the curve (88.8%). Variable importance ranking identified meatal taxa that in the vagina are associated with BV: Parvimonas, Lactobacillus iners, L. crispatus, Dialister, Sneathia sanguinegens, and Gardnerella vaginalis were among the top 10 most predictive taxa. The accuracy of glans/coronal sulcus taxa to predict incident BV was comparable to meatal taxa accuracy, but with greater variability. Conclusions: Baseline penile microbiota accurately predicted BV incidence in women who did not have BV at baseline, with more than half of incident infections observed at 6- to 12- months after penile microbiome assessment. These results suggest interventions to manipulate the penile microbiome may reduce BV incidence in sex partners, and that potential treatment (antibiotic or live biotherapeutic) will need to be effective in reducing or altering bacteria at both the glans/coronal sulcus and urethral sites (as represented by the meatus). The temporal association clarifies that concordance of penile microbiome with the vaginal microbiome of sex partners is not merely reflecting the vaginal microbiome, but can contribute to it.

Dataset Information

Getting to a Man's Heart through His Colon.

Publications

Getting to a Man's Heart through His Colon.

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