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https://www.readbyqxmd.com/read/29207983/protocol-for-project-impact-improving-millions-hearts-for-provider-and-community-transformation-a-quasi-experimental-evaluation-of-an-integrated-electronic-health-record-and-community-health-worker-intervention-study-to-improve-hypertension-management-among
#1
Priscilla M Lopez, Jennifer Zanowiak, Keith Goldfeld, Katarzyna Wyka, Ahmad Masoud, Susan Beane, Rashi Kumar, Phoebe Laughlin, Chau Trinh-Shevrin, Lorna Thorpe, Nadia Islam
BACKGROUND: The Million Hearts® initiative aims to prevent heart disease and stroke in the United States by mobilizing public and private sectors around a core set of objectives, with particular attention on improving blood pressure control. South Asians in particular have disproportionately high rates of hypertension and face numerous cultural, linguistic, and social barriers to accessing healthcare. Interventions utilizing Health information technology (HIT) and community health worker (CHW)-led patient coaching have each been demonstrated to be effective at advancing Million Hearts® goals, yet few studies have investigated the potential impact of integrating these strategies into a clinical-community linkage initiative...
December 6, 2017: BMC Health Services Research
https://www.readbyqxmd.com/read/29191301/incremental-value-of-deformation-imaging%C3%A2-and-hemodynamics-following%C3%A2-heart-transplantation-insights-from-graft%C3%A2-function-profiling
#2
Yukari Kobayashi, Naga Lakshmi Sudini, June-Wha Rhee, Marie Aymami, Kegan J Moneghetti, Sara Bouajila, Yuhei Kobayashi, Juyong B Kim, Ingela Schnittger, Jeffery J Teuteberg, Kiran K Khush, William F Fearon, Francois Haddad
OBJECTIVES: This study investigated to define graft dysfunction and to determine its incremental association with long-term outcome after heart transplantation (HT). BACKGROUND: Although graft failure is an established cause of late mortality after HT, few studies have analyzed the prognostic value of graft dysfunction at 1- and 5-year follow-up of HT. METHODS: Patients who underwent HT and completed their first annual evaluation with right heart catheterization and echocardiography at Stanford University between January 1999 and December 2011 were included in the study...
December 2017: JACC. Heart Failure
https://www.readbyqxmd.com/read/29181289/numerical-investigation-of-the-tribological-performance-of-micro-dimple-textured-surfaces-under-hydrodynamic-lubrication
#3
Kangmei Li, Dalei Jing, Jun Hu, Xiaohong Ding, Zhenqiang Yao
Surface texturing is an important approach for controlling the tribological behavior of friction pairs used in mechanical and biological engineering. In this study, by utilizing the method of three-dimensional computational fluid dynamics (CFD) simulation, the lubrication model of a friction pair with micro-dimple array was established based on the Navier-Stokes equations. The typical pressure distribution of the lubricant film was analyzed. It was found that a positive hydrodynamic pressure is generated in the convergent part of the micro-dimple, while a negative hydrodynamic pressure is generated in the divergent part...
2017: Beilstein Journal of Nanotechnology
https://www.readbyqxmd.com/read/29180305/pulmonary-vascular-resistance-during-exercise-predicts-long-term-outcomes-in-heart-failure-with-preserved-ejection-fraction
#4
Wei Huang, Rudolf K F Oliveira, Han Lei, David M Systrom, Aaron B Waxman
BACKGROUND: In heart failure with preserved ejection fraction (HFpEF), the prognostic value of pulmonary vascular dysfunction (PV-dysfunction), identified by elevated PVR at peak exercise, is not completely understood. We evaluated the long-term prognostic implications of PV-dysfunction in HFpEF during exercise in consecutive patients undergoing invasive cardiopulmonary exercise testing for unexplained dyspnea. METHODS: Patients with HFpEF were classified into two main groups: resting-HFpEF (rHFpEF;n=104, 62% female, 61-yrs) with a pulmonary arterial wedge pressure (PAWP)>15mmHg at rest; and exercise-HFpEF (eHFpEF;n=81) with a PAWP<15mmHg at rest, but >20mmHg during exercise...
November 24, 2017: Journal of Cardiac Failure
https://www.readbyqxmd.com/read/29169795/paravertebral-block-for-thoracic-surgery
#5
REVIEW
Francine D'Ercole, Harendra Arora, Priya A Kumar
Local anesthetic injected into a wedge-shaped space lateral to the spinal nerves as they emerge from the intervertebral foramina produces somatosensory and sympathetic nerve blockade effective for anesthesia and for managing pain of unilateral origin from the chest and abdomen. Paravertebral blockade (PVB) is versatile and may be applied unilaterally or bilaterally. Unlike thoracic epidural, the PVB technique may be used to avoid contralateral sympathectomy, thereby minimizing hypotension and leading to better preservation of blood pressure...
October 4, 2017: Journal of Cardiothoracic and Vascular Anesthesia
https://www.readbyqxmd.com/read/29159269/pulmonary-artery-dysfunction-in-chronic-thromboembolic-pulmonary-hypertension
#6
Hidetoshi Chibana, Nobuhiro Tahara, Naoki Itaya, Takashi Ishimatsu, Masahiro Sasaki, Motoki Sasaki, Takaharu Nakayoshi, Masanori Ohtsuka, Shinji Yokoyama, Ken-Ichiro Sasaki, Takafumi Ueno, Yoshihiro Fukumoto
Background: Unresolved thromboemboli in the pulmonary arteries (PA) is known to cause chronic thromboembolic pulmonary hypertension (CTEPH). However, it remains unknown if vascular dysfunction in pulmonary arteries exists in patients with CTEPH. Methods and results: We enrolled 7 female patients with CTEPH in this study, who have stable pulmonary hemodynamics after balloon pulmonary angioplasty (age; 73.6 ± 3.0 years old, mean right atrial pressure; 4.1 ± 0...
December 2017: IJC Heart & Vasculature
https://www.readbyqxmd.com/read/29154426/microvascular-dysfunction-and-cardiac-fibrosis-in-heart-failure-with-preserved-ejection-fraction-a-case-report
#7
Nikhil Narang, Diego Medvedofsky, Kathryn Dryer, Sanjiv J Shah, Charles J Davidson, Amit R Patel, John E A Blair
We report the case of a 55-year-old woman with heart failure with preserved ejection fraction (HFpEF), who presented with hypertensive urgency and pulmonary oedema. The patient was medically optimized and underwent cardiac catheterization revealing pulmonary hypertension, elevated pulmonary capillary wedge pressure, normal cardiac index, and non-obstructive coronary disease. Invasive evaluation of coronary flow revealed blunted coronary flow reserve and increased index of microvascular resistance. Cardiac magnetic resonance imaging demonstrated reduced global myocardial perfusion and diffuse interstitial fibrosis...
November 2017: ESC Heart Failure
https://www.readbyqxmd.com/read/29154178/the-effect-of-wedge-and-tibial-slope-angles-on-knee-contact-pressure-and-kinematics-following-medial-opening-wedge-high-tibial-osteotomy
#8
Marianne S Black, Agnes G d'Entremont, Robert G McCormack, Gregory Hansen, Derek Carr, David R Wilson
BACKGROUND: High tibial osteotomy is a surgical procedure to treat medial compartment osteoarthritis in varus knees. The reported success rates of the procedure are inconsistent, which may be due to sagittal plane alignment of the osteotomy. The objective of this study was to determine the effect of changing tibial slope, for a range of tibial wedge angles in high tibial osteotomy, on knee joint contact pressure location and kinematics during continuous loaded flexion/extension. METHODS: Seven cadaveric knee specimens were cycled through flexion and extension in an Oxford knee-loading rig...
November 2, 2017: Clinical Biomechanics
https://www.readbyqxmd.com/read/29150159/diagnostic-performance-of-pulmonary-capacitance-at-rest-and-during-exercise-in-idiopathic-pulmonary-arterial-hypertension
#9
Pankaj Jain, Sriram Rao, Peter Macdonald, Eugene Kotlyar, Andrew Jabbour, Christopher Hayward, Anne Keogh
BACKGROUND: Reliable markers of early disease are needed in pulmonary arterial hypertension (PAH). As measures of the contribution of abnormal vascular compliance to overall vascular resistance, resting and exercise pulmonary capacitance-defined as the stroke volume divided by the change in pulmonary pulse pressure-may be sensitive markers of early disease. METHODS: We examined all patients in our pulmonary hypertension database with idiopathic PAH, who had undergone rest and exercise right heart catheterisation in one sitting...
November 8, 2017: Heart, Lung & Circulation
https://www.readbyqxmd.com/read/29142012/a-transcatheter-interatrial-shunt-device-for-the-treatment-of-heart-failure-with-preserved-ejection-fraction-reduce-lap-hf-i-a-phase-2-randomized-sham-controlled-trial
#10
Ted Feldman, Laura Mauri, Rami Kahwash, Sheldon Litwin, Mark J Ricciardi, Pim van der Harst, Martin Penicka, Peter S Fail, David M Kaye, Mark C Petrie, Anupam Basuray, Scott L Hummel, Rhondalyn Forde-McLean, Christopher D Nielsen, Scott Lilly, Joseph M Massaro, Daniel Burkhoff, Sanjiv J Shah
Background -In non-randomized, open-label studies, a transcatheter interatrial shunt device (IASD, Corvia Medical) was associated with lower pulmonary capillary wedge pressure (PCWP), less symptoms, and greater quality of life and exercise capacity in patients with heart failure (HF) and mid-range or preserved ejection fraction (EF ≥ 40%). We conducted the first randomized, sham-controlled trial to evaluate the IASD in HF with EF ≥ 40%. Methods -REDUCE LAP-HF I was a phase 2, randomized, parallel-group, blinded multicenter trial in patients with New York Heart Association (NYHA) class III or ambulatory class IV HF, EF ≥ 40%, exercise PCWP ≥ 25 mmHg, and PCWP-right atrial pressure gradient ≥ 5 mmHg...
November 15, 2017: Circulation
https://www.readbyqxmd.com/read/29128899/a-no-touch-technique-for-pulmonary-wedge-resection-of-lung-cancer
#11
Noriyoshi Sawabata, Takeru Hyakutaka, Takeshi Kawaguchi, Motoaki Yasukawa, Norikazu Kawai, Takashi Tojo, Shigeki Taniguchi
OBJECTIVE: Many of the surgical patients with lung cancer die by metastasis originated from circulating tumor cells (CTCs) which are seeds of metastases. A ring-shaped catching forceps, which generates the great pressure by compression, may reduce the risk of tumor cell spreading. Here, we investigated the efficacy of such forceps based on CTC occurrence. METHODS: Twenty-three patients with clinical stage IA lung cancer who underwent a pulmonary wedge resection were investigated in a clinical-pathological manner...
November 11, 2017: General Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/29121097/sex-based-differences-in-veterans-with-pulmonary-hypertension-results-from-the-veterans-affairs-clinical-assessment-reporting-and-tracking-database
#12
Corey E Ventetuolo, Edward Hess, Eric D Austin, Anna E Barón, James R Klinger, Tim Lahm, Thomas M Maddox, Mary E Plomondon, Lauren Thompson, Roham T Zamanian, Gaurav Choudhary, Bradley A Maron
Women have an increased risk of pulmonary hypertension (PH) but better survival compared to men. Few studies have explored sex-based differences in population-based cohorts with PH. We sought to determine whether sex was associated with hemodynamics and survival in US veterans with PH (mean pulmonary artery pressure [mPAP] ≥ 25 mm Hg) from the Veterans Affairs Clinical Assessment, Reporting, and Tracking database. The relationship between sex and hemodynamics was assessed with multivariable linear mixed modeling...
2017: PloS One
https://www.readbyqxmd.com/read/29115016/pulmonary-hypertension-in-stiff-left-atrial-syndrome-pathogenesis-and-treatment-in-one
#13
Micha T Maeder, Reto Nägele, Philipp Rohner, Daniel Weilenmann
We present the rare case of a patient with pulmonary hypertension in the context of the stiff left atrial syndrome after extensive catheter ablation, a unique constellation characterized by high pulmonary artery and pulmonary artery wedge pressures due to left atrial dysfunction but normal left ventricular end-diastolic pressure, normal mitral valve, and absence pulmonary vein stenosis. This patient was surprisingly oligosymptomatic, however, which may have been due to a persistent post-puncture atrial septal defect, which may have allowed for controlled left atrial decompression, which is in line with the novel concept of the catheter-based creation of an intracardiac shunt as a treatment for heart failure...
November 8, 2017: ESC Heart Failure
https://www.readbyqxmd.com/read/29099421/effects-of-atorvastatin-on-portal-hemodynamics-and-clinical-outcomes-in-patients-with-cirrhosis-with-portal-hypertension-a-proof-of-concept-study
#14
Saptarshi Bishnu, Sk M Ahammed, Avik Sarkar, Jabaranjan Hembram, Saswata Chatterjee, Kshaunish Das, Gopal K Dhali, Abhijit Chowdhury, Kausik Das
BACKGROUND AND AIM: Statins can modulate portal microvascular dynamics in patients with cirrhosis. We present data from a proof-of-concept study aimed at comparing combination of propranolol and atorvastatin versus propranolol alone in reducing portal pressure in patients with cirrhosis. PATIENTS AND METHODS: In this open-label proof-of-concept study, 23 consecutive patients with cirrhosis were randomized into group A (incremental dose propranolol, n=12) or group B (atorvastatin 20 mg daily with propranolol in incremental dose, n=11)...
November 2, 2017: European Journal of Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/29092504/note-a-simple-system-for-low-temperature-experiments-in-a-large-volume-multi-anvil-press
#15
W Yong, R A Secco
A simple cooling system for a 3000-ton multi-anvil press was developed for temperatures below room temperature at high pressures. It is much simpler in design, easier to make and use, and has the same cooling capability as the previous design. The new system uses a steel ring surrounding the module wedges, which contains liquid nitrogen (LN2) that flows freely through a port to flood the interior of the pressure module. O-rings on the steel ring seal in LN2 while permitting compression. Two different cooling systems reach ∼220 K which suggests that thermal equilibrium for this press is reached between the removal and influx of heat...
October 2017: Review of Scientific Instruments
https://www.readbyqxmd.com/read/29077636/effects-of-sedentary-aging-and-lifelong-exercise-on-left-ventricular-systolic-function
#16
Erin J Howden, Graeme Carrick-Ranson, Satyam Sarma, Michinari Hieda, Naoki Fujimoto, Benjamin D Levine
PURPOSE: The current study examined whether age-related changes in left ventricular (LV) longitudinal systolic function is an adaptation to a more sedentary lifestyle and can be preserved by lifelong exercise training. METHODS: A cross-sectional examination of 18 sedentary young (37±6 years), 29 sedentary seniors (71±5 years, 0-3 exercise sessions/wk), and 26 seniors (68±5 years) who had performed a committed level (4-7 exercise sessions/wk) of lifelong (>25 years) exercise...
October 26, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/29042653/silica-precipitation-potentially-controls-earthquake-recurrence-in-seismogenic-zones
#17
Hanae Saishu, Atsushi Okamoto, Makoto Otsubo
Silica precipitation is assumed to play a significant role in post-earthquake recovery of the mechanical and hydrological properties of seismogenic zones. However, the relationship between the widespread quartz veins around seismogenic zones and earthquake recurrence is poorly understood. Here we propose a novel model of quartz vein formation associated with fluid advection from host rocks and silica precipitation in a crack, in order to quantify the timescale of crack sealing. When applied to sets of extensional quartz veins around the Nobeoka Thrust of SW Japan, an ancient seismogenic splay fault, our model indicates that a fluid pressure drop of 10-25 MPa facilitates the formation of typical extensional quartz veins over a period of 6...
October 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29032225/right-ventricular-dysfunction-in-acute-myocardial-infarction-complicated-by-cardiogenic-shock-a-hemodynamic-analysis-of-the-should-we-emergently-revascularize-occluded-coronaries-for-cardiogenic-shock-shock-trial-and-registry
#18
Anuradha Lala, Yu Guo, Jinfeng Xu, Michele Esposito, Kevin Morine, Richard Karas, Stuart D Katz, Judith S Hochman, Daniel Burkhoff, Navin K Kapur
BACKGROUND: The prevalence and significance of right ventricular dysfunction (RVD) in patients with cardiogenic shock due to acute myocardial infarction (AMI-CS) has not been well characterized. We hypothesized that RVD is common in AMI-CS and associated with worse clinical outcomes. METHODS AND RESULTS: We retrospectively analyzed patients with available hemodynamics enrolled in the SHould we emergently revascularize Occluded coronaries for Cardiogenic shocK (SHOCK) Trial (n=139) and Registry (n=258) to identify RVD in AMI-CS...
October 11, 2017: Journal of Cardiac Failure
https://www.readbyqxmd.com/read/29032138/wedge-pressure-rather-than-left%C3%A2-ventricular-end-diastolic-pressure-predicts-outcome-in-heart-failure-with%C3%A2-preserved-ejection-fraction
#19
Julia Mascherbauer, Caroline Zotter-Tufaro, Franz Duca, Christina Binder, Matthias Koschutnik, Andreas A Kammerlander, Stefan Aschauer, Diana Bonderman
OBJECTIVES: This study sought to compare the prognostic power of left ventricular end-diastolic pressure (LVEDP) and pulmonary arterial wedge pressure (PAWP) in heart failure with preserved ejection fraction (HFpEF). BACKGROUND: It is broadly accepted that direct measurement of LVEDP in HFpEF more robustly reflects left ventricular hemodynamics than PAWP. METHODS: A total of 173 consecutive HFpEF patients were prospectively enrolled. Of these, 152 patients fulfilled registry inclusion criteria...
November 2017: JACC. Heart Failure
https://www.readbyqxmd.com/read/29031870/novel-parameter-to-predict-left-ventricular-filling-pressure-product-of-lnbnp-and-e-a-ratio
#20
Masayoshi Oikawa, Atsushi Kobayashi, Kento Wada, Takamasa Sato, Satoshi Suzuki, Akiomi Yoshihisa, Kazuhiko Nakazato, Hitoshi Suzuki, Shu-Ichi Saitoh, Takafumi Ishida, Yasuchika Takeishi
BACKGROUND: Several echocardiographic parameters are currently being employed to evaluate left ventricular (LV) filling pressure. However, these parameters are not always consistent in the clinical setting. We aimed to determine a novel parameter by multiplying log B-type natriuretic peptide (lnBNP) and mitral inflow early and late diastolic filling velocity ratio (E/A) for the prediction of pulmonary capillary wedge pressure (PCWP). METHODS AND RESULTS: One hundred and ninety-eight patients suspected of chronic heart failure were analyzed...
October 12, 2017: Journal of Cardiac Failure
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