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Medical Specialties Commons

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2014

Middle Aged

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Articles 1 - 30 of 62

Full-Text Articles in Medical Specialties

Repeated Transradial Catheterization: Feasibility, Efficacy, And Safety, Marinos A Charalambous, Savvas S Constantinides, Michael A Talias, Elpidoforos S Soteriades, Christos P Christou Dec 2014

Repeated Transradial Catheterization: Feasibility, Efficacy, And Safety, Marinos A Charalambous, Savvas S Constantinides, Michael A Talias, Elpidoforos S Soteriades, Christos P Christou

The Texas Heart Institute Journal

Transradial access is an alternative to the transfemoral approach in coronary interventions. It results in less access-site bleeding, shorter hospital stays, lower costs, and less pain for the patient. However, some authors have suggested that the transradial approach might lead to radial artery occlusion, which precludes repeated same-artery catheterizations. Using data from our center, we evaluated the feasibility, safety, and efficacy of repeated transradial catheterization.

We reviewed the 3,006 transradial catheterizations performed at our center from 2006 through 2009. Patients who had undergone at least one repeated transradial catheterization were identified, their cases monitored through 2012, and their baseline characteristics …


Brachiocephalic Artery Cannulation In Proximal Aortic Surgery That Requires Circulatory Arrest, Mehmet Unal, Oguz Yilmaz, Ilker Akar, Ilker Ince, Cemal Aslan, Fatih Koc, Haluk Kafali Dec 2014

Brachiocephalic Artery Cannulation In Proximal Aortic Surgery That Requires Circulatory Arrest, Mehmet Unal, Oguz Yilmaz, Ilker Akar, Ilker Ince, Cemal Aslan, Fatih Koc, Haluk Kafali

The Texas Heart Institute Journal

The brachiocephalic artery is an alternative cannulation site in the repair of ascending aortic lesions that require circulatory arrest. We evaluate the effectiveness and safety of this technique.

Proximal aortic surgery was performed in 32 patients from 2006 through 2012 via brachiocephalic artery cannulation and circulatory arrest. Twenty-four (75%) of the patients were men. The mean age was 48.69 ± 9.43 years (range, 30–68 yr). Twelve had type I dissection, 2 had type II dissection, and 18 had true aneurysms of the ascending aorta. All operations were performed through a median sternotomy. The arterial cannula was inserted through an 8-mm …


Aortic Valve Reconstruction With Use Of Pericardial Leaflets In Adults With Bicuspid Aortic Valve Disease: Early And Midterm Outcomes, Meong Gun Song, Hyun Suk Yang, Jong Bum Choi, Je Kyoun Shin, Hyun Keun Chee, Jun Seok Kim Dec 2014

Aortic Valve Reconstruction With Use Of Pericardial Leaflets In Adults With Bicuspid Aortic Valve Disease: Early And Midterm Outcomes, Meong Gun Song, Hyun Suk Yang, Jong Bum Choi, Je Kyoun Shin, Hyun Keun Chee, Jun Seok Kim

The Texas Heart Institute Journal

In this study, we retrospectively analyzed the outcomes of adults with bicuspid aortic valve (BAV) disease who underwent aortic valve reconstructive surgery (AVRS), consisting of replacement of the diseased BAV with 2 or 3 pericardial leaflets plus fixation of the sinotubular junction for accurate and constant leaflet coaptation. From December 2007 through April 2013, 135 consecutive patients (mean age, 49.2 ± 13.1 yr; 73.3% men) with symptomatic BAV disease underwent AVRS. Raphe was observed in 84 patients (62.2%), and the remaining 51 patients had pure BAV without raphe. A total of 122 patients (90.4%) underwent 3-leaflet reconstruction, and 13 (9.6%) …


Attitudes Of Women In Their Forties Toward The 2009 Uspstf Mammogram Guidelines: A Randomized Trial On The Effects Of Media Exposure, Autumn Davidson, Xun Liao, B. Magee Nov 2014

Attitudes Of Women In Their Forties Toward The 2009 Uspstf Mammogram Guidelines: A Randomized Trial On The Effects Of Media Exposure, Autumn Davidson, Xun Liao, B. Magee

B. Dale Magee

OBJECTIVE: The objective of the study was to assess women's attitudes toward 2009 US Preventive Services Task Force mammography screening guideline changes and evaluate the role of media in shaping opinions. STUDY DESIGN: Two hundred forty-nine women, aged 39-49 years, presenting for annual examinations randomized to read 1 of 2 articles, and survey completion comprised the design of the study. RESULTS: Eighty-eight percent overestimated the lifetime breast cancer (BrCa) risk. Eighty-nine percent want yearly mammograms in their 40s. Eighty-six percent felt the changes were unsafe, and even if the changes were doctor recommended, 84% would not delay screening until age …


Imp3 Expression Is Associated With Poor Outcome And Epigenetic Deregulation In Intrahepatic Cholangiocarcinoma, Yuanyuan Gao, Michelle Yang, Zhong Jiang, Bruce A. Woda, Arthur M. Mercurio, Jianjie Qin, Xinli Huang, Feng Zhang Nov 2014

Imp3 Expression Is Associated With Poor Outcome And Epigenetic Deregulation In Intrahepatic Cholangiocarcinoma, Yuanyuan Gao, Michelle Yang, Zhong Jiang, Bruce A. Woda, Arthur M. Mercurio, Jianjie Qin, Xinli Huang, Feng Zhang

Arthur M. Mercurio

IMP3 is a fetal protein not expressed in normal adult tissues. IMP3 is an oncoprotein and a useful biomarker for a variety of malignancies and is associated with reduced overall survival of a number of them. IMP3 expression and its prognostic value for patients with intrahepatic cholangiocarcinoma (ICC) have not been well investigated. The molecular mechanism underlying IMP3 expression in human cancer cells remains to be elucidated. Here we investigated IMP3 expression in ICC and adjacent nonneoplastic liver in 72 unifocal primary ICCs from a single institute by immunohistochemistry, immunoblotting, and real-time polymerase chain reaction. IMP3 was specifically expressed in …


Hippocampal Functional Connectivity Patterns During Spatial Working Memory Differ In Right Versus Left Temporal Lobe Epilepsy., Gaelle Eve Doucet, Karol Osipowicz, Ashwini Sharan Md, Michael R Sperling, Joseph I Tracy Nov 2014

Hippocampal Functional Connectivity Patterns During Spatial Working Memory Differ In Right Versus Left Temporal Lobe Epilepsy., Gaelle Eve Doucet, Karol Osipowicz, Ashwini Sharan Md, Michael R Sperling, Joseph I Tracy

Gaelle Eve Doucet

Temporal lobe epilepsy (TLE), affecting the medial temporal lobe, is a disorder that affects not just episodic memory but also working memory (WM). However, the exact nature of hippocampal-related network activity in visuospatial WM remains unclear. To clarify this, we utilized a functional connectivity (FC) methodology to investigate hippocampal network involvement during the encoding phase of a functional magnetic resonance imaging (fMRI) visuospatial WM task in right and left TLE patients. Specifically, we assessed the relation between FC within right and left hippocampus-seeded networks, and patient performance (rate of correct responses) during the encoding phase of a block span WM …


30-Year Trends In Patient Characteristics, Treatment Practices, And Long-Term Outcomes Of Adults Aged 35 To 54 Years Hospitalized With Acute Myocardial Infarction, Mayra Tisminetzky, David Mcmanus, Joel Gore, Jorge Yarzebski, Andrew Coles, Darleen Lessard, Robert Goldberg Nov 2014

30-Year Trends In Patient Characteristics, Treatment Practices, And Long-Term Outcomes Of Adults Aged 35 To 54 Years Hospitalized With Acute Myocardial Infarction, Mayra Tisminetzky, David Mcmanus, Joel Gore, Jorge Yarzebski, Andrew Coles, Darleen Lessard, Robert Goldberg

Jorge L. Yarzebski

Much of our knowledge about the characteristics, clinical management, and postdischarge outcomes of acute myocardial infarction (AMI) is derived from clinical studies in middle-aged and older subjects with little contemporary information available about the descriptive epidemiology of AMI in relatively young men and women. The objectives of our population-based study were to describe >3-decade-long trends in the clinical features, treatment practices, and long-term outcomes of young adults aged 35 to 54 years discharged from the hospital after AMI. The study population consisted of 2,142 residents of the Worcester (Massachusetts) metropolitan area who were hospitalized with AMI at all central Massachusetts …


Antipsychotic Use In Nursing Homes Varies By Psychiatric Consultant, Jennifer Tjia, Terry Field, Celeste Lemay, Kathleen Mazor, Michelle Pandolfi, Ann Spenard, Shih-Yieh Ho, Abir Kanaan, Jennifer Donovan, Jerry Gurwitz, Becky Briesacher Nov 2014

Antipsychotic Use In Nursing Homes Varies By Psychiatric Consultant, Jennifer Tjia, Terry Field, Celeste Lemay, Kathleen Mazor, Michelle Pandolfi, Ann Spenard, Shih-Yieh Ho, Abir Kanaan, Jennifer Donovan, Jerry Gurwitz, Becky Briesacher

Jennifer Tjia

BACKGROUND: The relationship between psychiatric consultation and antipsychotic prescribing in nursing homes (NH) is unknown. OBJECTIVE: To identify the association between psychiatric consultant groups and NH-level antipsychotic prescribing after adjustment for resident case-mix and facility characteristics. RESEARCH DESIGN AND SUBJECTS: Nested cross-sectional study of 60 NHs in a cluster randomized trial. We linked facility leadership surveys to October 2009-September 2010 Minimum Data Set, Nursing Home Compare, the US Census, and pharmacy dispensing data. MEASURES: The main exposure is the psychiatric consultant group and the main outcome is NH-level prevalence of atypical antipsychotic use. We calculated annual means and interquartile ranges …


The Significance Of Functional Renal Obstruction In Predicting Pathologic Stage Of Upper Tract Urothelial Carcinoma., Michael J. Amirian, Kushan Radadia, Hadley Narins, Kelly A. Healy, Scott G. Hubosky, Demetrius H. Bagley, Edouard J. Trabulsi, Costas D. Lallas Nov 2014

The Significance Of Functional Renal Obstruction In Predicting Pathologic Stage Of Upper Tract Urothelial Carcinoma., Michael J. Amirian, Kushan Radadia, Hadley Narins, Kelly A. Healy, Scott G. Hubosky, Demetrius H. Bagley, Edouard J. Trabulsi, Costas D. Lallas

Department of Urology Faculty Papers

BACKGROUND AND PURPOSE: Assessing the severity of upper tract urothelial carcinoma (UTUC) has been difficult because of inadequate biopsy specimens. Additional predictive parameters of disease stage would be useful when deciding a treatment plan; it has been suggested that preoperative hydronephrosis can be a surrogate. We examined the relationship between preoperative ipsilateral renal obstruction identified by imaging with final pathologic stage after nephroureterectomy (NU) for UTUC. We then analyzed those patients with ipsilateral renal obstruction and examined if tumor location is associated with an advanced pathologic stage.

METHODS: Patients who underwent NU for UTUC between the years 2001 to 2013 …


From Case Management To Court Clinic: Examining Forensic System Involvement Of Persons With Severe Mental Illness, William Fisher, Ira Packer, Thomas Grisso, Melissa Mcdermeit, Julie-Marie Brown Oct 2014

From Case Management To Court Clinic: Examining Forensic System Involvement Of Persons With Severe Mental Illness, William Fisher, Ira Packer, Thomas Grisso, Melissa Mcdermeit, Julie-Marie Brown

Ira K Packer

The study examined the flow of a state mental health agency's case-managed clients into its forensic mental health court clinic systems for evaluation of competency to stand trial (CST) for a criminal offense. An analysis of merged encounter data from the case management and court clinic systems revealed that roughly 2% of the case-managed population were referred to court clinics for evaluation of CST during a 1-year period, but that these 2% represented roughly one eighth of that year's court clinic evaluees. The likelihood of this involvement was higher for males, African-Americans, and Latinos, and for persons with a history …


Quantification Of Left Ventricular Torsion And Diastolic Recoil Using Cardiovascular Magnetic Resonance Myocardial Feature Tracking., Johannes T. Kowallick, Pablo Lamata, Shazia T. Hussain, Shelby Kutty, Michael Steinmetz, Jan M Sohns, Martin Fasshauer, Wieland Staab, Christina Unterberg-Buchwald, Boris Bigalke, Joachim Lotz, Gerd Hasenfuß, Andreas Schuster Oct 2014

Quantification Of Left Ventricular Torsion And Diastolic Recoil Using Cardiovascular Magnetic Resonance Myocardial Feature Tracking., Johannes T. Kowallick, Pablo Lamata, Shazia T. Hussain, Shelby Kutty, Michael Steinmetz, Jan M Sohns, Martin Fasshauer, Wieland Staab, Christina Unterberg-Buchwald, Boris Bigalke, Joachim Lotz, Gerd Hasenfuß, Andreas Schuster

Journal Articles: Cardiology

OBJECTIVES: Cardiovascular magnetic resonance feature tracking (CMR-FT) offers quantification of myocardial deformation from routine cine images. However, data using CMR-FT to quantify left ventricular (LV) torsion and diastolic recoil are not yet available. We therefore sought to evaluate the feasibility and reproducibility of CMR-FT to quantify LV torsion and peak recoil rate using an optimal anatomical approach.

METHODS: Short-axis cine stacks were acquired at rest and during dobutamine stimulation (10 and 20 µg · kg(-1) · min(-1)) in 10 healthy volunteers. Rotational displacement was analysed for all slices. A complete 3D-LV rotational model was developed using linear interpolation between adjacent …


Contemporary Use Of Balloon Aortic Valvuloplasty In The Era Of Transcatheter Aortic Valve Implantation, Dawn S Hui, David M Shavelle, Mark J Cunningham, Ray V Matthews, Vaughn A Starnes Oct 2014

Contemporary Use Of Balloon Aortic Valvuloplasty In The Era Of Transcatheter Aortic Valve Implantation, Dawn S Hui, David M Shavelle, Mark J Cunningham, Ray V Matthews, Vaughn A Starnes

The Texas Heart Institute Journal

The development of transcatheter aortic valve implantation (TAVI) has increased the use of balloon aortic valvuloplasty (BAV) in treating aortic stenosis. We evaluated our use of BAV in an academic tertiary referral center with a developing TAVI program.

We reviewed 69 consecutive stand-alone BAV procedures that were performed in 62 patients (mean age, 77 ± 10 yr; 62% men; baseline mean New York Heart Association functional class, 3 ± 1) from January 2009 through December 2012. Enrollment for the CoreValve® clinical trial began in January 2011. We divided the study cohort into 2 distinct periods, defined as pre-TAVI (2009–2010) and …


Use Of A Melody Pulmonary Valve In Transcatheter Valve-In-Valve Replacement For Tricuspid Valve Bioprosthesis Degeneration, David M Filsoof, David F Snipelisky, Brian P Shapiro Oct 2014

Use Of A Melody Pulmonary Valve In Transcatheter Valve-In-Valve Replacement For Tricuspid Valve Bioprosthesis Degeneration, David M Filsoof, David F Snipelisky, Brian P Shapiro

The Texas Heart Institute Journal

Bioprosthetic heart valves can degenerate and fail over time. Repeat surgery as a means of replacement increases morbidity and mortality rates, and some patients are not candidates for reoperation. A newer treatment, percutaneous transcatheter valve-in-valve implantation, might delay or substitute for invasive procedures. We present the case of a 51-year-old woman, a poor candidate for surgery who had prosthetic tricuspid valve degeneration and stenosis. We successfully performed valve-in-valve placement of a Melody® valve, using a procedure originally intended to treat pulmonary valve conduit obstruction or regurgitation. To our knowledge, this is among the first case reports to describe the use …


Effect Of Electrocautery On Endothelial Integrity Of The Internal Thoracic Artery: Ultrastructural Analysis With Transmission Electron Microscopy, Burak Onan, Mehmet Yeniterzi, Ismihan Selen Onan, Burak Ersoy, Suheyla Gonca, Elif Gelenli, Seyhun Solakoglu, Ihsan Bakir Oct 2014

Effect Of Electrocautery On Endothelial Integrity Of The Internal Thoracic Artery: Ultrastructural Analysis With Transmission Electron Microscopy, Burak Onan, Mehmet Yeniterzi, Ismihan Selen Onan, Burak Ersoy, Suheyla Gonca, Elif Gelenli, Seyhun Solakoglu, Ihsan Bakir

The Texas Heart Institute Journal

The internal thoracic artery (ITA) is typically harvested from the chest wall by means of conventional electrocautery. We investigated the effects of electrocautery on endothelial-cell and vessel-wall morphology at the ultrastructural level during ITA harvesting. Internal thoracic artery specimens from 20 patients who underwent elective coronary artery bypass grafting were investigated in 2 groups. The ITA grafts were sharply dissected with use of a scalpel and clips in the control group (n=10) and were harvested by means of electrocautery in the study group (n=10). Each sample was evaluated for intimal, elastic-tissue, muscular-layer, and adventitial changes. Free flow was measured intraoperatively. …


Troponin Leak Associated With Drug-Induced Methemoglobinemia., Robert D. Cannon Do, Michael Wagner, Jeanne L. Jacoby Md Oct 2014

Troponin Leak Associated With Drug-Induced Methemoglobinemia., Robert D. Cannon Do, Michael Wagner, Jeanne L. Jacoby Md

Department of Emergency Medicine

Drug-induced methemoglobinemia is a well-described entity but has not been previously associated with elevated troponins in the absence of cardiac symptoms. We report a case of a patient presenting to the emergency department (ED) with complaints related to an exacerbation of her long-standing cystitis. A low pulse oximetry reading prompted an evaluation, revealing a troponin leak, which peaked at 10 hours. Her methemoglobin level was found to be elevated at 11.4%, but a preexisting anemia apparently prevented the clinical recognition of cyanosis. The methemoglobinemia was determined to be secondary to her ingestion of phenazopyridine and trimethoprim-sulfa methoxizole. Although phenazopyridine and …


Barriers And Facilitators For Colorectal Cancer Screening Practices In The Latino Community: Perspectives From Community Leaders, Ana Natale-Pereira, Jonnie Marks, Marielos Vega, Dawne Mouzon, Shawna Hudson, Debbie Salas-Lopez Sep 2014

Barriers And Facilitators For Colorectal Cancer Screening Practices In The Latino Community: Perspectives From Community Leaders, Ana Natale-Pereira, Jonnie Marks, Marielos Vega, Dawne Mouzon, Shawna Hudson, Debbie Salas-Lopez

Debbie Salas-Lopez MD, MPH

BACKGROUND: Colorectal cancer (CRC) is the second-leading cause of cancer-related death in the United States and the third most commonly diagnosed cancer among Latinos. While Latinos represent one of the fastest-growing ethnic groups in the United States, their participation in cancer prevention and treatment trials is low. METHODS: Thirty-six Latino community leaders participated in five focus groups that examined factors affecting CRC screening practices among Latinos. RESULTS: The top four barriers identified were low knowledge and awareness of CRC, language barriers, lack of insurance, and undocumented legal status. Additional barriers included seeking health care only when sick, fatalism, fear, denial …


Perspectives On Cancer Screening Among Latino Community Members And Internal Medicine Residents, Debbie Salas-Lopez, Dawne Mouzon, Jonnie Marks, Neil Kothari, Ana Natale-Pereira Sep 2014

Perspectives On Cancer Screening Among Latino Community Members And Internal Medicine Residents, Debbie Salas-Lopez, Dawne Mouzon, Jonnie Marks, Neil Kothari, Ana Natale-Pereira

Debbie Salas-Lopez MD, MPH

BACKGROUND: Latinos have lower rates of cancer screening, partially because of cultural beliefs that conflict with those of health care professionals. Moreover, established programs for training physicians in cultural competency often fail to incorporate input from the community.

METHODS: To explore beliefs about cancer and cancer screening among Latino community members and internal medicine residents. Three focus groups of Latino community members (n = 31) and one focus group of internal medicine residents (n = 9) were conducted to compare ideas regarding cancer and cancer screening.

RESULTS: We identified clear disconnects between residents and Latino community members regarding their understandings …


National Trauma Institute Prospective Evaluation Of The Ventilator Bundle In Trauma Patients: Does It Really Work?, Martin A. Croce Md, Karen J. Brasel Md, Mph, Raul Coimbra Md, Phd, Charles A. Adams Jr, Md, Preston R. Miller Md, Michael D. Pasquale Md, Facs, Fccm, Chanchai S. Mcdonald Phd, Somchan Vuthipadadon Phd, Timothy C. Fabian Md, Elizabeth A. Tolley Phd Sep 2014

National Trauma Institute Prospective Evaluation Of The Ventilator Bundle In Trauma Patients: Does It Really Work?, Martin A. Croce Md, Karen J. Brasel Md, Mph, Raul Coimbra Md, Phd, Charles A. Adams Jr, Md, Preston R. Miller Md, Michael D. Pasquale Md, Facs, Fccm, Chanchai S. Mcdonald Phd, Somchan Vuthipadadon Phd, Timothy C. Fabian Md, Elizabeth A. Tolley Phd

Michael D Pasquale MD, FACS, FCCM

BACKGROUND: Since its introduction by the Institute for Healthcare Improvement, the ventilator bundle (VB) has been credited with a reduction in ventilator-associated pneumonia (VAP). The VB consists of stress ulcer prophylaxis, deep venous thrombosis prophylaxis, head-of-bed elevation, and daily sedation vacation with weaning assessment. While there is little compelling evidence that the VB is effective, it has been widely accepted. The Centers for Medical and Medicaid Services has suggested that VAP should be a "never event" and may reduce payment to providers. To provide evidence of its efficacy, the National Trauma Institute organized a prospective multi-institutional trial to evaluate the …


Return To Work After Stroke: A Nursing State Of The Science., Catherine Harris, Phd, Mba, Crnp Sep 2014

Return To Work After Stroke: A Nursing State Of The Science., Catherine Harris, Phd, Mba, Crnp

College of Nursing Faculty Papers & Presentations

There is a lack of research related to return to work (RTW) after acute ischemic stroke. Historically considered a disease of the elderly, acute ischemic stroke studies have not routinely used return to work as an outcome. Major stroke trials have not routinely collected this data as an endpoint. However, the mean age for acute ischemic stroke (AIS) has declined to 69 years of age, while the incidence in patients under the age of 55 has increased to 19%1-3. Changes in retirement age have also affected RTW as a consideration in stroke patients. Failure to RTW after recovery …


Randomised Clinical Trial: Polyethylene Glycol 3350 With Sports Drink Vs. Polyethylene Glycol With Electrolyte Solution As Purgatives For Colonoscopy--The Incidence Of Hyponatraemia., Rebecca Matro, Constantine Daskalakis, Dan Negoianu, Leo Katz, Cassandra Henry, Michael Share, David Kastenberg Sep 2014

Randomised Clinical Trial: Polyethylene Glycol 3350 With Sports Drink Vs. Polyethylene Glycol With Electrolyte Solution As Purgatives For Colonoscopy--The Incidence Of Hyponatraemia., Rebecca Matro, Constantine Daskalakis, Dan Negoianu, Leo Katz, Cassandra Henry, Michael Share, David Kastenberg

Division of Gastroenterology and Hepatology Faculty Papers

BACKGROUND: Polyethylene glycol 3350 plus sports drink (PEG-SD) is a hypo-osmotic purgative commonly used for colonoscopy, though little safety data are available.

AIM: To evaluate the effect of PEG-SD on serum sodium (Na) and other electrolytes compared with PEG-electrolyte solution (PEG-ELS).

METHODS: We performed a single center, prospective, randomised, investigator-blind comparison of PEG-ELS to PEG-SD in out-patients undergoing colonoscopy. Laboratories were obtained at baseline and immediately before and after colonoscopy. The primary endpoint was development of hyponatraemia (Na/L) the day of colonoscopy. Changes in electrolyte levels were computed as the difference between the lowest value on the day of colonoscopy …


Quantification Of Left Atrial Strain And Strain Rate Using Cardiovascular Magnetic Resonance Myocardial Feature Tracking: A Feasibility Study., Johannes Tammo Kowallick, Shelby Kutty, Frank Edelmann, Amedeo Chiribiri, Adriana Villa, Michael Steinmetz, Jan Martin Sohns, Wieland Staab, Nuno Bettencourt, Christina Unterberg-Buchwald, Gerd Hasenfuß, Joachim Lotz, Andreas Schuster Aug 2014

Quantification Of Left Atrial Strain And Strain Rate Using Cardiovascular Magnetic Resonance Myocardial Feature Tracking: A Feasibility Study., Johannes Tammo Kowallick, Shelby Kutty, Frank Edelmann, Amedeo Chiribiri, Adriana Villa, Michael Steinmetz, Jan Martin Sohns, Wieland Staab, Nuno Bettencourt, Christina Unterberg-Buchwald, Gerd Hasenfuß, Joachim Lotz, Andreas Schuster

Journal Articles: Cardiology

BACKGROUND: Cardiovascular Magnetic Resonance myocardial feature tracking (CMR-FT) is a quantitative technique tracking tissue voxel motion on standard steady-state free precession (SSFP) cine images to assess ventricular myocardial deformation. The importance of left atrial (LA) deformation assessment is increasingly recognized and can be assessed with echocardiographic speckle tracking. However atrial deformation quantification has never previously been demonstrated with CMR. We sought to determine the feasibility and reproducibility of CMR-FT for quantitative derivation of LA strain and strain rate (SR) myocardial mechanics.

METHODS: 10 healthy volunteers, 10 patients with hypertrophic cardiomyopathy (HCM) and 10 patients with heart failure and preserved ejection …


Nontyphoidal Cardiac Salmonellosis: Two Case Reports And A Review Of The Literature, Daniel Ortiz, Eric M Siegal, Christopher Kramer, Bijoy K Khandheria, Ernesto Brauer Aug 2014

Nontyphoidal Cardiac Salmonellosis: Two Case Reports And A Review Of The Literature, Daniel Ortiz, Eric M Siegal, Christopher Kramer, Bijoy K Khandheria, Ernesto Brauer

The Texas Heart Institute Journal

Nontyphoidal Salmonella, especially Salmonella enterica, is a rare cause of endocarditis and pericarditis that carries a high mortality rate. Proposed predisposing conditions include immunodeficiency states, congenital heart defects, and cardiac valve diseases. We present 2 cases of cardiovascular salmonellosis. The first case is that of a 73-year-old woman with mechanical mitral and bioprosthetic aortic valves who died from sequelae of nontyphoidal Salmonella mitral valve vegetation, aortic valve abscess, and sepsis. The second case is that of a 62-year-old man with a recent systemic lupus erythematosus exacerbation treated with oral steroids, who presented with obstructive features of tamponade and sepsis secondary …


Right Ventricular Outflow Tract Obstruction Caused By Double-Chambered Right Ventricle Presenting In Adulthood, John Kokotsakis, Efthymia G Rouska, Leanne Harling, Hutan Ashrafian, Vania Anagnostakou, Christos Charitos, Thanos Athanasiou Aug 2014

Right Ventricular Outflow Tract Obstruction Caused By Double-Chambered Right Ventricle Presenting In Adulthood, John Kokotsakis, Efthymia G Rouska, Leanne Harling, Hutan Ashrafian, Vania Anagnostakou, Christos Charitos, Thanos Athanasiou

The Texas Heart Institute Journal

Congenital heart diseases that cause obstruction of the right ventricular outflow tract are often difficult to diagnose. We report the case of a 49-year-old man who presented with long-standing shortness of breath on exertion. Imaging revealed right ventricular outflow tract obstruction caused by a double-chambered right ventricle, and he was referred for surgical correction. This case emphasizes both the detailed perioperative evaluation that is needed when diagnosing adults who present with manifestations of congenital heart disease and a method of successful surgical correction that resulted in symptom resolution.


Intravitreal Triamcinolone Acetonide Injection For Macular Edema Due To Central Retinal Vein Occlusion Persisting Despite Multiple Intravitreal Bevacizumab Injections., Rayan A Alshareef, Sunir Garg, Jason Hsu, James Vander, Carl Park, Marc J Spirn Aug 2014

Intravitreal Triamcinolone Acetonide Injection For Macular Edema Due To Central Retinal Vein Occlusion Persisting Despite Multiple Intravitreal Bevacizumab Injections., Rayan A Alshareef, Sunir Garg, Jason Hsu, James Vander, Carl Park, Marc J Spirn

Wills Eye Hospital Papers

PURPOSE: To evaluate the response to intravitreal triamcinolone acetonide for macular edema persisting or recurring despite multiple intravitreal bevacizumab (IVB) treatments for central retinal vein occlusion (CRVO).

METHODS: Retrospective interventional case series of 21 eyes with CRVO from 21 patients who were diagnosed with persistent or recurrent macular edema secondary to CRVO and treated with 0.1mL (4mg) intravitreal triamcinolone acetonide (IVTA) after initial treatment with 3 or more IVB injections. Anatomic and visual responses were the study primary outcomes.

RESULTS: Mean logarithm of the minimum angle of resolution visual acuity was 1.19 (20/316) immediately before IVTA injection, and improved to …


Heuristic Modeling Of Carcinogenesis For The Population With Dichotomous Susceptibility To Cancer: A Pancreatic Cancer Example., Tengiz Mdzinarishvili, Simon Sherman Jun 2014

Heuristic Modeling Of Carcinogenesis For The Population With Dichotomous Susceptibility To Cancer: A Pancreatic Cancer Example., Tengiz Mdzinarishvili, Simon Sherman

Journal Articles: Eppley Institute

At present, carcinogenic models imply that all individuals in a population are susceptible to cancer. These models either ignore a fall of the cancer incidence rate at old ages, or use some poorly identifiable parameters for its accounting. In this work, a new heuristic model is proposed. The model assumes that, in a population, only a small fraction (pool) of individuals is susceptible to cancer and decomposes the problem of the carcinogenic modeling on two sequentially solvable problems: (i) determination of the age-specific hazard rate in individuals susceptible to cancer (individual hazard rate) from the observed hazard rate in the …


Self-Reported Head Injury And Risk Of Late-Life Impairment And Ad Pathology In An Ad Center Cohort, Erin L. Abner, Peter T. Nelson, Frederick A. Schmitt, Steven R. Browning, David W. Fardo, Lijie Wan, Gregory A. Jicha, Gregory E. Cooper, Charles D. Smith, Allison M. Caban-Holt, Linda J. Van Eldik, Richard J. Kryscio Jun 2014

Self-Reported Head Injury And Risk Of Late-Life Impairment And Ad Pathology In An Ad Center Cohort, Erin L. Abner, Peter T. Nelson, Frederick A. Schmitt, Steven R. Browning, David W. Fardo, Lijie Wan, Gregory A. Jicha, Gregory E. Cooper, Charles D. Smith, Allison M. Caban-Holt, Linda J. Van Eldik, Richard J. Kryscio

Sanders-Brown Center on Aging Faculty Publications

Aims: To evaluate the relationship between self-reported head injury and cognitive impairment, dementia, mortality, and Alzheimer's disease (AD)-type pathological changes. Methods: Clinical and neuropathological data from participants enrolled in a longitudinal study of aging and cognition (n = 649) were analyzed to assess the chronic effects of self-reported head injury. Results: The effect of self-reported head injury on the clinical state depended on the age at assessment: for a 1-year increase in age, the OR for the transition to clinical mild cognitive impairment (MCI) at the next visit for participants with a history of head injury was 1.21 and 1.34 …


Treatment Preferences Among Problem Drinkers In Primary Care., Daniel Z Lieberman, Anne Cioletti, Suena H Massey, Rochelle S Collantes, Brad B Moore Jun 2014

Treatment Preferences Among Problem Drinkers In Primary Care., Daniel Z Lieberman, Anne Cioletti, Suena H Massey, Rochelle S Collantes, Brad B Moore

Psychiatry and Behavioral Sciences Faculty Publications

OBJECTIVE: Alcohol misuse is common among primary care patients, yet many do not receive treatment because doctors believe problem drinkers are "in denial," or are unwilling to change their drinking habits. The real problem, however, may be that patients are being offered treatment modalities that do not meet their needs. This study was designed to measure the acceptability of various treatment options among drinkers who were currently not receiving treatment.

METHOD: Patients in a primary care clinic were given a self-report questionnaire that included: (1) the Alcohol Use Disorders Questionnaire, (2) a measure of readiness to change drinking behavior, and …


Natural Progression Of Low-Gradient Severe Aortic Stenosis With Preserved Ejection Fraction, Antony Leslie Innasimuthu, Sanjay Kumar, Jason Lazar, William E Katz Jun 2014

Natural Progression Of Low-Gradient Severe Aortic Stenosis With Preserved Ejection Fraction, Antony Leslie Innasimuthu, Sanjay Kumar, Jason Lazar, William E Katz

The Texas Heart Institute Journal

Because the natural progression of low-gradient aortic stenosis (LGAS) has not been well defined, we performed a retrospective study of 116 consecutive patients with aortic stenosis who had undergone follow-up echocardiography at a median interval of 698 days (range, 371–1,020 d). All patients had preserved left ventricular ejection fraction (>0.50) during and after follow-up.

At baseline, patients were classified by aortic valve area (AVA) as having mild stenosis (≥1.5 cm2), moderate stenosis (≥1 to <1.5 cm2), or severe stenosis (<1 cm2). Severe aortic stenosis was further classified by mean gradient (LGAS, mean <40 mmHg; high-gradient aortic stenosis [HGAS], mean ≥40 mmHg). We compared baseline and follow-up values among 4 groups: patients with mild stenosis, moderate stenosis, LGAS, and HGAS.

At baseline, 30 patients had mild stenosis, 54 had moderate stenosis, 24 had LGAS, and 8 had HGAS. Compared with the moderate group, the LGAS …


Comparison Of Insulin Infusion Protocols Targeting 110-140 Mg/Dl In Patients After Cardiac Surgery., Vasudev Magaji, Shriddha Nayak, Amy Donihi, Lauren Willard, Srinivasa Jampana, Parachur Nivedita, Raymond Eder, Jann Johnston, Mary Korytkowski May 2014

Comparison Of Insulin Infusion Protocols Targeting 110-140 Mg/Dl In Patients After Cardiac Surgery., Vasudev Magaji, Shriddha Nayak, Amy Donihi, Lauren Willard, Srinivasa Jampana, Parachur Nivedita, Raymond Eder, Jann Johnston, Mary Korytkowski

Vasudev G Magaji MD, MS

BACKGROUND: Continuous intravenous insulin infusion (CII) following coronary artery bypass graft (CABG) surgery reduces postoperative complications and hospitalization duration. Because of limited data evaluating outcomes of CII with revised glycemic targets (110-140 mg/dL) in cardiac surgery, this study compared efficacy and safety of two different CII protocols having revised targets. SUBJECTS AND METHODS: This is a retrospective study comparing two different protocols between August 2009 and March 2010. Protocol 1 consists of four algorithms, and Protocol 2 is a table to adjust CII. Blood glucose (BG) and CII rates were recorded for 48 h postoperatively or CII discontinuation. Efficacy was …


Ultraviolet Radiation, Aging And The Skin: Prevention Of Damage By Topical Camp Manipulation, Alexandra Amaro-Ortiz, Betty Yan, John A. D’Orazio May 2014

Ultraviolet Radiation, Aging And The Skin: Prevention Of Damage By Topical Camp Manipulation, Alexandra Amaro-Ortiz, Betty Yan, John A. D’Orazio

Markey Cancer Center Faculty Publications

Being the largest and most visible organ of the body and heavily influenced by environmental factors, skin is ideal to study the long-term effects of aging. Throughout our lifetime, we accumulate damage generated by UV radiation. UV causes inflammation, immune changes, physical changes, impaired wound healing and DNA damage that promotes cellular senescence and carcinogenesis. Melanoma is the deadliest form of skin cancer and among the malignancies of highest increasing incidence over the last several decades. Melanoma incidence is directly related to age, with highest rates in individuals over the age of 55 years, making it a clear age-related disease. …