Scholars@Duke
Kishan S Parikh

Kishan S Parikh

Adjunct Associate in the Department of Medicine
Medicine, Cardiology
Wakemed Heart Center, 3000 New Bern Ave, Suite 1200, Raleigh, NC 27610
Wakemed Heart Center, 3000 New Bern Ave, Suite 1200, Raleigh, NC 27610

Selected Publications

Use of invasive cardiopulmonary exercise testing to diagnose preload reserve failure in patients with liver disease.

Journal Article ESC Heart Fail · February 2024 In this case series, we describe the use of invasive cardiopulmonary exercise testing (iCPET) to diagnose heart failure due to preload reserve failure in two patients with progressive dyspnoea. We demonstrate that underlying liver disease contributes to pr ... Full text Link to item Cite

Chronic Thromboembolic Pulmonary Hypertension

Journal Article Current Respiratory Medicine Reviews · January 1, 2024 While the majority of patients have complete resolution of their acute pulmonary embolism (PE) after an adequate course of anticoagulation, some patients remain symptomatic with evidence of chronic PE. Chronic Thromboembolic Pulmonary Hypertension (CTEPH) ... Full text Cite

Electronic health record characterization and outcomes of heart failure with preserved ejection fraction.

Conference Am Heart J · September 2023 BACKGROUND: Electronic health record (EHR)-based identification of heart failure with preserved ejection fraction (HFpEF) in the clinical setting may facilitate screening for clinical trials by improving the understanding of its epidemiology and outcomes; ... Full text Link to item Cite

Long-term outcomes of phenoclusters in severe tricuspid regurgitation.

Journal Article Eur Heart J · June 1, 2023 AIMS: Severe tricuspid regurgitation (TR) exhibits high 1-year morbidity and mortality, yet long-term cardiovascular risk overall and by subgroups remains unknown. This study characterizes 5-year outcomes and identifies distinct clinical risk profiles of s ... Full text Link to item Cite

Atrial shunt device for heart failure with preserved and mildly reduced ejection fraction (REDUCE LAP-HF II): a randomised, multicentre, blinded, sham-controlled trial.

Journal Article Lancet · March 19, 2022 BACKGROUND: Placement of an interatrial shunt device reduces pulmonary capillary wedge pressure during exercise in patients with heart failure and preserved or mildly reduced ejection fraction. We aimed to investigate whether an interatrial shunt can reduc ... Full text Link to item Cite

Relationship of Nonalcoholic Fatty Liver Disease and Heart Failure With Preserved Ejection Fraction.

Journal Article JACC Basic Transl Sci · November 2021 Although there is an established bidirectional relationship between heart failure with reduced ejection fraction and liver disease, the association between heart failure with preserved ejection fraction (HFpEF) and liver diseases, such as nonalcoholic fatt ... Full text Link to item Cite

Early Identification of Patients at Risk for Incident Heart Failure With Preserved Ejection Fraction: Novel Approach to Echocardiographic Trends.

Journal Article J Card Fail · September 2021 BACKGROUND: Heart failure with preserved ejection fraction (HFpEF) continues to increase in prevalence with a 50% mortality rate within 3 years of diagnosis, but lacking effective evidence-based therapies. Specific echocardiographic markers are not typical ... Full text Link to item Cite

Association between Pulmonary Hypertension and Outcomes in Heart-Kidney Transplantation

Conference JOURNAL OF HEART AND LUNG TRANSPLANTATION · 2021 Cite

Clinical Outcomes Among Patients With Severe Tricuspid Valve Regurgitation

Conference JOURNAL OF THE AMERICAN COLLEGE OF CARDIOLOGY · 2021 Cite

Treatment-related biomarkers in pulmonary hypertension patients on oral therapies.

Journal Article Respir Res · November 19, 2020 BACKGROUND: Multiple classes of oral therapy are available for the treatment of pulmonary arterial hypertension (PAH), but there is little to guide clinicians in choosing a specific regimen or therapeutic class. We aimed to investigate whether treatment-re ... Full text Open Access Link to item Cite

Applications of the Multisensor HeartLogic Heart Failure Monitoring Algorithm During the COVID-19 Global Pandemic.

Journal Article JACC Case Rep · November 18, 2020 In the COVID-19 era, the heart failure community has witnessed an unprecedented reduction in heart failure-related patient visits and hospitalizations. Social distancing measures present a dilemma for patients with heart failure who require frequent survei ... Full text Open Access Link to item Cite

Age-related differences in hemodynamics and functional status in pulmonary arterial hypertension: Baseline results from the Pulmonary Hypertension Association Registry.

Journal Article J Heart Lung Transplant · September 2020 BACKGROUND: The age of patients with pulmonary arterial hypertension (PAH) has increased, with registries now reporting mean ages of 50 to 65 years old. Limited data exist on age-related differences in hemodynamic and functional assessments in PAH. METHODS ... Full text Link to item Cite

Pulmonary Hypertension Subtypes and Mortality in CKD.

Journal Article Am J Kidney Dis · May 2020 RATIONALE & OBJECTIVE: Pulmonary hypertension (PH) contributes to cardiovascular disease and mortality in patients with chronic kidney disease (CKD), but the pathophysiology is mostly unknown. This study sought to estimate the prevalence and consequences o ... Full text Open Access Link to item Cite

Experience in Transitioning From Parenteral Prostacyclins to Selexipag in Pulmonary Arterial Hypertension.

Journal Article J Cardiovasc Pharmacol · April 2020 Parenteral prostacyclin therapies remain first-line therapy for patients with pulmonary arterial hypertension (PAH) with class IV symptoms. In selected patients who have been clinically stabilized, switching to selexipag, a chemically distinct prostacyclin ... Full text Open Access Link to item Cite

Monitoring Pulmonary Arterial Hypertension Using an Implantable Hemodynamic Sensor.

Journal Article Chest · December 2019 BACKGROUND: Pulmonary arterial hypertension (PAH) is a chronic disease that ultimately progresses to right-sided heart failure (HF) and death. Close monitoring of pulmonary artery pressure (PAP) and right ventricular (RV) function allows clinicians to appr ... Full text Open Access Link to item Cite

Diverse cardiopulmonary diseases are associated with distinct xenon magnetic resonance imaging signatures.

Journal Article Eur Respir J · December 2019 BACKGROUND: As an increasing number of patients exhibit concomitant cardiac and pulmonary disease, limitations of standard diagnostic criteria are more frequently encountered. Here, we apply noninvasive 129Xe magnetic resonance imaging (MRI) and spectrosco ... Full text Open Access Link to item Cite

Impact of Age on Comorbidities and Outcomes in Heart Failure With Reduced Ejection Fraction.

Journal Article JACC Heart Fail · December 2019 OBJECTIVES: This study sought to determine whether age modifies the impact of key comorbidities on clinical outcomes for patients with heart failure with reduced ejection fraction (HFrEF). BACKGROUND: Comorbidities impact outcomes in HFrEF. However, the ef ... Full text Link to item Cite

Echocardiographic Assessment of Right Ventricular Function and Response to Therapy in Pulmonary Arterial Hypertension.

Journal Article Am J Cardiol · October 15, 2019 Echocardiography is a key tool in the management of patients with pulmonary arterial hypertension (PAH), but many potential parameters could be used to assess response to therapy. In this retrospective study of 48 patients with severe PAH at baseline, we e ... Full text Link to item Cite

Outcomes of lung disease-associated pulmonary hypertension and impact of elevated pulmonary vascular resistance.

Journal Article Respir Med · April 2019 BACKGROUND: The clinical characteristics, hemodynamic changes and outcomes of lung disease-associated pulmonary hypertension (LD-PH) are poorly defined. METHODS: A prospective cohort of PH patients undergoing initial hemodynamic assessment was collected, f ... Full text Link to item Cite

Clinical Features and Outcomes of Patients with Sarcoidosis-associated Pulmonary Hypertension.

Journal Article Sci Rep · March 11, 2019 The presence of pulmonary hypertension (PH) significantly worsens outcomes in patients with advanced sarcoidosis, but its optimal management is unknown. We aimed to characterize a large sarcoidosis-associated pulmonary hypertension (SAPH) cohort to better ... Full text Open Access Link to item Cite

Characteristics of Acute Heart Failure Hospitalizations Based on Presenting Severity.

Journal Article Circ Heart Fail · January 2019 BACKGROUND: Hospitalizations for acute heart failure (HF) are significant events with downstream implications for patients, as well as healthcare systems and payers. However, from anecdotal experience, both hospitalization and postdischarge courses vary si ... Full text Link to item Cite

Relation of Volume Overload to Clinical Outcomes in Acute Heart Failure (From ASCEND-HF).

Journal Article Am J Cardiol · November 1, 2018 We aimed to study whether jugular venous distension (JVD) and peripheral edema were associated with worse outcomes in patients with acute heart failure in the Acute Study of Clinical Effectiveness of Nesiritide in Decompensated Heart Failure trial. Of 7,14 ... Full text Link to item Cite

Heart Failure With Preserved Ejection Fraction Expert Panel Report: Current Controversies and Implications for Clinical Trials.

Journal Article JACC Heart Fail · August 2018 The number of persons with heart failure has continued to rise over the last several years. Approximately one-half of those living with heart failure have heart failure with preserved ejection fraction, but critical unsolved questions remain across the spe ... Full text Open Access Link to item Cite

Dose Response of β-Blockers in Adrenergic Receptor Polymorphism Genotypes.

Journal Article Circ Genom Precis Med · August 2018 Background In heart failure (HF) with reduced ejection fraction, 2 clinical trials, the BEST (β-Blocker Evaluation of Survival Trial) and HF-ACTION (Heart Failure: A Controlled Trial Investigating Outcomes of Exercise Training), have reported an effectiven ... Full text Link to item Cite

Focused cardiac ultrasound as a predictor of readmission in acute decompensated heart failure.

Journal Article Int J Cardiovasc Imaging · July 2018 Acute decompensated heart failure (ADHF) is a common reason for admission to the hospital, and readmission is frequent. Multiple factors contribute to rehospitalizations, but inadequate assessment of volume status leading to persistent congestion is an imp ... Full text Link to item Cite

OUTCOME OF LUNG DISEASE-RELATED PULMONARY HYPERTENSION AND IMPACT OF VASOREACTIVITY

Conference Journal of the American College of Cardiology · March 2018 Full text Cite

Systematic review and meta-analysis of endovascular and surgical revascularization for patients with chronic lower extremity venous insufficiency and varicose veins.

Journal Article Am Heart J · February 2018 BACKGROUND: Chronic lower extremity venous disease (LECVD) is twice as prevalent as coronary heart disease, and invasive therapies to treat LECVD accounted for an estimated $290 million in Medicare expenditures in 2015. Despite increasing use of these inva ... Full text Link to item Cite

Pharmacogenomics of Bucindolol in Atrial Fibrillation and Heart Failure.

Journal Article Curr Heart Fail Rep · December 2017 PURPOSE OF REVIEW: We explore the pharmacogenomics of the beta-blocker bucindolol by discussing relevant beta-1 adrenergic receptor (ADRB1) polymorphisms and recent beta-blocker studies. Through this, we will understand how bucindolol may help patients wit ... Full text Link to item Cite

Representativeness of Medicare Participants in the Jackson Heart Study for African American Medicare Beneficiaries.

Journal Article Epidemiology · September 2017 BACKGROUND: The Jackson Heart Study (JHS) assesses cardiovascular disease risk factors among African Americans in Jackson, Mississippi. Whether characteristics of JHS participants differ from those of a broader African American population are unknown. METH ... Full text Link to item Cite

Health insurance and racial disparities in pulmonary hypertension outcomes.

Journal Article Am J Manag Care · August 2017 OBJECTIVES: Pulmonary hypertension portends a poorer prognosis for blacks versus white populations, but the underlying reasons are poorly understood. We investigated associations of disease characteristics, insurance status, and race with clinical outcomes ... Open Access Link to item Cite

Exercise Training in Patients With Chronic Heart Failure and Atrial Fibrillation.

Journal Article J Am Coll Cardiol · April 4, 2017 BACKGROUND: The safety and efficacy of aerobic exercise in heart failure (HF) patients with atrial fibrillation (AF) has not been well evaluated. OBJECTIVES: This study examined whether outcomes with exercise training in HF vary according to AF status. MET ... Full text Link to item Cite

Resting Heart Rate and Long-term Outcomes Among the African American Population: Insights From the Jackson Heart Study.

Journal Article JAMA Cardiol · February 1, 2017 IMPORTANCE: Increased resting heart rate is associated with worse outcomes in studies of mostly white populations, but its significance is not well established in African Americans persons whose cardiac comorbidities and structural abnormalities differ. OB ... Full text Link to item Cite

Novel approach to classifying patients with pulmonary arterial hypertension using cluster analysis.

Journal Article Pulm Circ · 2017 Pulmonary arterial hypertension (PAH) patients have distinct disease courses and responses to treatment, but current diagnostic and treatment schemes provide limited insight. We aimed to see if cluster analysis could distinguish clinical phenotypes in PAH. ... Full text Link to item Cite

Relation of Angina Pectoris to Outcomes, Quality of Life, and Response to Exercise Training in Patients With Chronic Heart Failure (from HF-ACTION).

Journal Article Am J Cardiol · October 15, 2016 Angina pectoris (AP) is associated with worse outcomes in heart failure (HF). We investigated the association of AP with health-related quality of life (HRQoL), exercise capacity, and clinical outcomes and its interaction with exercise training in an HF po ... Full text Link to item Cite

Safety and Tolerability of High-dose Inhaled Treprostinil in Pulmonary Hypertension.

Journal Article J Cardiovasc Pharmacol · April 2016 Pulmonary arterial hypertension (PAH) has emerging therapeutic options including prostacyclin analogs. Inhaled therapy offers advantages compared with alternative routes of administration. We aimed to determine the safety and tolerability of inhaled trepro ... Full text Link to item Cite

Sequential Organ Failure Assessment Score at Presentation Predicts Survival in Patients Treated With Percutaneous Veno-Arterial Extracorporeal Membrane Oxygenation.

Journal Article J Invasive Cardiol · April 2016 BACKGROUND AND PURPOSE: This study sought to investigate demographic, clinical, and procedural determinants of outcomes in patients treated with percutaneous veno-arterial (VA) extracorporeal membrane oxygenation (ECMO) initiated in the cardiac catheteriza ... Link to item Cite

Diagnosing pulmonic valve infective endocarditis with positron emission tomography-CT.

Journal Article BMJ Case Rep · February 1, 2016 Infective endocarditis (IE) affects the pulmonic valve in less than 2% of cases. Not only is pulmonary valve IE rare, it is also challenging to visualise with commonly used imaging modalities. In this vignette, we present a 50-year-old patient with a histo ... Full text Link to item Cite

Mode of Death After Acute Heart Failure Hospitalization　- A Clue to Possible Mechanisms.

Journal Article Circ J · 2016 Heart failure continues to be a leading cause of hospitalization worldwide, and acute heart failure (AHF) carries significant risk for short-term morbidity and mortality. Despite many trials of potential new therapies for AHF, there have been very few adva ... Full text Link to item Cite

Pulmonary Hypertension in the Era of Mechanical Circulatory Support.

Journal Article ASAIO J · 2016 Left heart disease (LHD) represents the most common cause of pulmonary hypertension (PH), and is associated with worse prognosis compared with LHD without PH. In addition, PH due to LHD may prevent patients from receiving heart transplantation, because of ... Full text Link to item Cite

Toward Theranostic Biomarkers In Pulmonary Hypertension

Conference AMERICAN JOURNAL OF RESPIRATORY AND CRITICAL CARE MEDICINE · January 1, 2016 Link to item Cite

Use of outcome measures in pulmonary hypertension clinical trials.

Journal Article Am Heart J · September 2015 OBJECTIVES: To evaluate the use of surrogate measures in pulmonary hypertension (PH) clinical trials and how it relates to clinical practice. BACKGROUND: Studies of pulmonary arterial hypertension (PAH) employ a variety of surrogate measures in addition to ... Full text Link to item Cite

Potential applications of pharmacogenomics to heart failure therapies.

Journal Article Heart Fail Clin · October 2014 Pharmacogenomics explores one drug's varying effects on different patient genotypes. A better understanding of genomic variation's contribution to drug response can impact 4 arenas in heart failure (HF): (1) identification of patients most likely to receiv ... Full text Link to item Cite

Cardiac glutaminolysis: a maladaptive cancer metabolism pathway in the right ventricle in pulmonary hypertension.

Journal Article J Mol Med (Berl) · October 2013 UNLABELLED: The rapid growth of cancer cells is permitted by metabolic changes, notably increased aerobic glycolysis and increased glutaminolysis. Aerobic glycolysis is also evident in the hypertrophying myocytes in right ventricular hypertrophy (RVH), par ... Full text Link to item Cite

FOXO1-mediated upregulation of pyruvate dehydrogenase kinase-4 (PDK4) decreases glucose oxidation and impairs right ventricular function in pulmonary hypertension: therapeutic benefits of dichloroacetate.

Journal Article J Mol Med (Berl) · March 2013 Pyruvate dehydrogenase kinase (PDK) is activated in right ventricular hypertrophy (RVH), causing an increase in glycolysis relative to glucose oxidation that impairs right ventricular function. The stimulus for PDK upregulation, its isoform specificity, an ... Full text Link to item Cite

Percutaneous transcatheter aortic valve closure successfully treats left ventricular assist device-associated aortic insufficiency and improves cardiac hemodynamics.

Journal Article JACC Cardiovasc Interv · January 2013 OBJECTIVES: This study sought to assess the effectiveness of a novel percutaneous method to treat left ventricular assist device (LVAD)-associated severe aortic insufficiency (AI) in a series of patients determined to be poor reoperative candidates. BACKGR ... Full text Link to item Cite

GRK2-mediated inhibition of adrenergic and dopaminergic signaling in right ventricular hypertrophy: therapeutic implications in pulmonary hypertension.

Journal Article Circulation · December 11, 2012 BACKGROUND: The cause and consequences of impaired adrenergic signaling in right ventricular failure/hypertrophy (RVH) are poorly understood. We hypothesized that G protein-coupled receptor kinase-2 (GRK2)-mediated uncoupling of β-adrenergic receptor signa ... Full text Link to item Cite

Wellens syndrome: a life-saving diagnosis.

Journal Article Am J Emerg Med · January 2012 The diagnosis of acute coronary syndrome relies on clinical history, electrocardiographic (ECG) changes, and cardiac biomarkers; but within the spectrum of acute coronary syndrome, there exist subtle presentations that cannot afford to be overlooked. Welle ... Full text Link to item Cite

Early repolarization associated with ventricular arrhythmias in patients with chronic coronary artery disease.

Journal Article Circ Arrhythm Electrophysiol · October 2010 BACKGROUND: Early repolarization, indicated on the standard 12-lead ECG, has recently been associated with idiopathic ventricular fibrillation in patients without structural heart disease. It is unknown whether there is an association between early repolar ... Full text Link to item Cite

J Point ST Elevation Does Not Predict Arrhythmic Events in Dilated Cardiomyopathy

Conference JOURNAL OF THE AMERICAN COLLEGE OF CARDIOLOGY · March 10, 2009 Link to item Cite

Global search for chromosomal abnormalities in infiltrating ductal carcinoma of the breast using array-comparative genomic hybridization.

Journal Article Cancer Genet Cytogenet · December 2004 Array-comparative genomic hybridization (a-CGH) is a molecular cytogenetic technique for detection of multiple chromosomal abnormalities in genomic DNA samples. Using an a-CGH with 287 probes, we examined 14 cases of breast infiltrating ductal carcinoma (I ... Full text Link to item Cite