2024
Exercise Limitation in Pulmonary Hypertension - Physiological Insights into the Six-Minute Walk Test.
Kremer N, Schaefer S, Yogeswaran A, Rako Z, Ghofrani H, Seeger W, Kojonazarov B, Heerdt P, Tedford R, Tello K. Exercise Limitation in Pulmonary Hypertension - Physiological Insights into the Six-Minute Walk Test. American Journal Of Respiratory And Critical Care Medicine 2024 PMID: 39404674, DOI: 10.1164/rccm.202407-1397rl.Peer-Reviewed Original ResearchTime domain analysis of wave reflection in the pulmonary circulation after lung resection in pigs
Keast T, Glass A, McCall P, Heerdt P, Shelley B. Time domain analysis of wave reflection in the pulmonary circulation after lung resection in pigs. British Journal Of Anaesthesia 2024, 132: 1009. DOI: 10.1016/j.bja.2024.01.027.Peer-Reviewed Original ResearchThree-dimensional (3D) Right Ventricular Surface Strain Computed From 3D Echocardiography Correlates With RVEF and Reveals Differences in Deformation Based on Severity of Pulmonary Arterial Hypertension Symptoms
Oakland H, Bellumkonda L, Sugeng L, Joseph P, Izzi D, Zalik F, McCabe S, Raza A, Amendola R, Heerdt P, Singh I, Hunter K. Three-dimensional (3D) Right Ventricular Surface Strain Computed From 3D Echocardiography Correlates With RVEF and Reveals Differences in Deformation Based on Severity of Pulmonary Arterial Hypertension Symptoms. 2024, a7381-a7381. DOI: 10.1164/ajrccm-conference.2024.209.1_meetingabstracts.a7381.Peer-Reviewed Original ResearchEssential right heart physiology for the perioperative practitioner POQI IX: current perspectives on the right heart in the perioperative period
McEvoy M, Heerdt P, Morton V, Bartz R, Miller T. Essential right heart physiology for the perioperative practitioner POQI IX: current perspectives on the right heart in the perioperative period. Perioperative Medicine 2024, 13: 27. PMID: 38594738, PMCID: PMC11003027, DOI: 10.1186/s13741-024-00378-8.Peer-Reviewed Original ResearchRight heart physiologyPerioperative Quality InitiativePerioperative periodRight heartRight ventricular (RV) dysfunctionHeart physiologyRight-sided heart functionRight heart anatomyRight heart diseasePrevent subsequent morbidityRV dysfunctionPerioperative morbidityChronic health issuesHeart functionHeart diseasePerioperative careHeart anatomyPerioperative cliniciansMorbidityPatientsHealth issuesDysfunctionQuality InitiativePulmonary Hypertension and the Risk of 30-Day Postoperative Pulmonary Complications after Gastrointestinal Surgical or Endoscopic Procedures: A Retrospective Propensity Score-Weighted Cohort Analysis
Tatsuoka Y, Carr Z, Jayakumar S, Lin H, He Z, Farroukh A, Heerdt P. Pulmonary Hypertension and the Risk of 30-Day Postoperative Pulmonary Complications after Gastrointestinal Surgical or Endoscopic Procedures: A Retrospective Propensity Score-Weighted Cohort Analysis. Journal Of Clinical Medicine 2024, 13: 1996. PMID: 38610760, PMCID: PMC11012853, DOI: 10.3390/jcm13071996.Peer-Reviewed Original ResearchPostoperative pulmonary complicationsLength of stayPulmonary hypertensionPulmonary complicationsPulmonary embolismRespiratory failureEndoscopic proceduresRisk of postoperative complicationsPulmonary artery pressurePreoperative risk assessmentProlonged length of stayRetrospective cohort studySub-cohort analysisIncreased LOSPropensity score overlap weightingOverlap weightingAssociation of PHPH cohortPH patientsPostoperative complicationsAbdominal surgeryRate of RFCohort studyControl cohortArterial pressure
2023
Differential cardiopulmonary haemodynamic phenotypes in PASC-related exercise intolerance
Kahn P, Joseph P, Heerdt P, Singh I. Differential cardiopulmonary haemodynamic phenotypes in PASC-related exercise intolerance. ERJ Open Research 2023, 10: 00714-2023. PMID: 38348243, PMCID: PMC10860209, DOI: 10.1183/23120541.00714-2023.Peer-Reviewed Original ResearchInvasive cardiopulmonary exercise testingRight heart catheterizationPASC patientsExertional intoleranceCardiac outputPulmonary artery wedge pressurePeak VO 2Supranormal cardiac outputPeak exercise capacityCardiopulmonary exercise testingMaximal voluntary ventilationPost-acute sequelaeBody mass indexSystemic oxygen extractionMild acute illnessSARS-CoV-2Exercise hemodynamicsHFpEF patientsHFpEF phenotypeHeart catheterizationWedge pressureAcute illnessExercise capacityExercise testingHemodynamic abnormalitiesRight Heart Failure in the Intensive Care Unit: Etiology, Pathogenesis, Diagnosis, and Treatment.
Tarras E, Khosla A, Heerdt P, Singh I. Right Heart Failure in the Intensive Care Unit: Etiology, Pathogenesis, Diagnosis, and Treatment. Journal Of Intensive Care Medicine 2023, 8850666231216889. PMID: 38031338, DOI: 10.1177/08850666231216889.Peer-Reviewed Original ResearchRight heart failureFailure patientsHeart failureTreatment optionsIntensive care unit settingMechanical circulatory support devicesIntensive care unitCirculatory support devicesCardio-pulmonary physiologyCare unitDifferent pharmacotherapiesUnit settingClinical guidancePathophysiological manifestationsCirculatory physiologyIntensivistsPatientsSupport devicesSupport optionsCirculatory systemHigh rateTreatmentDiagnosisFailureOptionsPulmonary artery wave intensity analysis in a pig model of lung resection
KEAST T, GLASS A, MCCALL P, SHELLEY B, HEERDT P. Pulmonary artery wave intensity analysis in a pig model of lung resection. Journal Of Cardiothoracic And Vascular Anesthesia 2023, 37: 9-10. DOI: 10.1053/j.jvca.2023.08.023.Peer-Reviewed Original ResearchForward compression waveBackward compression waveWave intensity analysisControl subjectsLung resectionPulmonary arteryPig modelSystolic timeCardiovascular MRIInvasive haemodynamic dataPulmonary artery pressureRight ventricular functionProximal pulmonary arteriesMain pulmonary arteryPost-operative patientsRight ventricular contractionWave reflection indicesMann-Whitney testIncreased afterloadLabChart softwareArtery pressureHaemodynamic effectsRV functionUpper lobectomyVentricular functionContinuous non-invasive hemodynamic monitoring in early onset severe preeclampsia
Ackerman-Banks C, Bhinder J, Eder M, Heerdt P, Sugeng L, Testani J, Alian A, Lipkind H, Velazquez E, Reddy U, Chou J. Continuous non-invasive hemodynamic monitoring in early onset severe preeclampsia. Pregnancy Hypertension 2023, 34: 27-32. PMID: 37783090, DOI: 10.1016/j.preghy.2023.09.003.Peer-Reviewed Original ResearchConceptsTotal peripheral resistanceCardiac outputSevere preeclampsiaHemodynamic monitoringEarly-onset severe preeclampsiaProspective observational studyOnset severe preeclampsiaContinuous hemodynamic monitoringNon-invasive hemodynamic monitoringEarly preeclampsiaPregnant patientsPeripheral resistanceObservational studyPreeclampsiaLow mean biasDays postpartumNICOMModerate correlationPoor correlationMean biasAntepartumPatientsPulmonary artery wave intensity analysis in a pig model of lung resection
Keast T, Glass A, McCall P, Shelley B, Heerdt P. Pulmonary artery wave intensity analysis in a pig model of lung resection. British Journal Of Anaesthesia 2023, 131: e96-e97. DOI: 10.1016/j.bja.2023.06.021.Peer-Reviewed Original ResearchContinuous positive airway pressure (CPAP) increases CSF flow and glymphatic transport
Ozturk B, Koundal S, Al Bizri E, Chen X, Gursky Z, Dai F, Lim A, Heerdt P, Kipnis J, Tannenbaum A, Lee H, Benveniste H. Continuous positive airway pressure (CPAP) increases CSF flow and glymphatic transport. JCI Insight 2023, 8: e170270. PMID: 37159262, PMCID: PMC10371231, DOI: 10.1172/jci.insight.170270.Peer-Reviewed Original ResearchConceptsContinuous positive airway pressurePositive airway pressureGlymphatic transportAirway pressureIntracranial pressureEnd-expiratory lung volumeCSF bulk flowCerebrospinal fluid flowArterial oxygenationUpper airwayLung volumeCPAP deviceRespiratory functionClearance functionTherapeutic benefitSkull baseAnesthetized rodentsCSF flowFluid homeostasisPhysiological testingLymphatic systemFunctional crosstalkClinical devicesAirwayRatsIntegrating Right Ventricular Pressure Waveform Analysis With Two-Point Volume Measurement for Quantification of Systolic and Diastolic Function: Experimental Validation and Clinical Application
Heerdt P, Martin-Flores M, Oakland H, Joseph P, Singh I. Integrating Right Ventricular Pressure Waveform Analysis With Two-Point Volume Measurement for Quantification of Systolic and Diastolic Function: Experimental Validation and Clinical Application. Journal Of Cardiothoracic And Vascular Anesthesia 2023, 37: 1929-1937. PMID: 37422337, PMCID: PMC10529383, DOI: 10.1053/j.jvca.2023.06.011.Peer-Reviewed Original ResearchConceptsRight heart catheterizationHeart catheterizationDiastolic functionRV volumesBeat measuresDiagnostic right heart catheterizationReference standardRight ventricular contractilityEnd-diastolic pressurePressure waveform analysisEnd-systolic elastancePotential clinical utilityClinical applicationRV volume measurementsVolume measurementsRV contractilityRV systolicVentricular contractilityRV pressureBland-Altman analysisClinical utilityAnesthetized swineNitric oxideExperimental modelContractilityCharacterizing the Spatiotemporal Transcriptomic Response of the Right Ventricle to Acute Pressure Overload
Kheyfets V, Kumar S, Heerdt P, Ichimura K, Brown R, Lucero M, Essafri I, Williams S, Stenmark K, Spiekerkoetter E. Characterizing the Spatiotemporal Transcriptomic Response of the Right Ventricle to Acute Pressure Overload. International Journal Of Molecular Sciences 2023, 24: 9746. PMID: 37298696, PMCID: PMC10253685, DOI: 10.3390/ijms24119746.Peer-Reviewed Original ResearchConceptsPressure overloadChronic RV pressure overloadExperimental pulmonary hypertension modelsRV pressure overloadTime pointsPulmonary hypertension modelRV outflow tractTranscriptomic signaturesAcute pressure overloadRight ventricular tissueDifferent time pointsPulmonary embolismHypertension modelSevere PEAcute increaseInitial insultOutflow tractRight ventricleRV apexVentricular tissueControl tissuesRatsSeverityWeeksTissueAge-related Changes in Structure, Function, and Transcriptomics of the Human Proximal Pulmonary Artery
Manning E, Ramachandra A, Cavinato C, Schupp J, Justet A, Lee P, Heerdt P, Singh I, Murphy T, Gill T, Tellides G, Kaminski N, Humphrey J. Age-related Changes in Structure, Function, and Transcriptomics of the Human Proximal Pulmonary Artery. 2023, a4656-a4656. DOI: 10.1164/ajrccm-conference.2023.207.1_meetingabstracts.a4656.Peer-Reviewed Original ResearchPulmonary Hypertension-related Changes in Structure and Function of the Human Proximal Pulmonary Artery
Manning E, Ramachandra A, Cavinato C, Lee P, Heerdt P, Singh I, Tellides G, Kaminski N, Humphrey J. Pulmonary Hypertension-related Changes in Structure and Function of the Human Proximal Pulmonary Artery. 2023, a6133-a6133. DOI: 10.1164/ajrccm-conference.2023.207.1_meetingabstracts.a6133.Peer-Reviewed Original ResearchProteomic profiling demonstrates inflammatory and endotheliopathy signatures associated with impaired cardiopulmonary exercise hemodynamic profile in Post Acute Sequelae of SARS‐CoV‐2 infection (PASC) syndrome
Singh I, Leitner B, Wang Y, Zhang H, Joseph P, Lutchmansingh D, Gulati M, Possick J, Damsky W, Hwa J, Heerdt P, Chun H. Proteomic profiling demonstrates inflammatory and endotheliopathy signatures associated with impaired cardiopulmonary exercise hemodynamic profile in Post Acute Sequelae of SARS‐CoV‐2 infection (PASC) syndrome. Pulmonary Circulation 2023, 13: e12220. PMID: 37091121, PMCID: PMC10113513, DOI: 10.1002/pul2.12220.Peer-Reviewed Original ResearchInvasive cardiopulmonary exercise testPASC patientsPost-acute sequelaeAcute sequelaeInfection syndromeUnexplained exertional intoleranceCardiopulmonary exercise testSystemic oxygen deliveryPersistent inflammatory stateVenous blood plasmaExertional intolerancePeak exerciseEndothelial dysfunctionHemodynamic profileInflammatory stateExercise testFibrotic processPathophysiological hallmarkAberrant protein expressionExpression of proteinsOxygen deliveryOxygen extractionProteomic profilingPatientsPhysiologic responsesResponse to letter to the editor “noninvasive determinants of pulmonary hypertension in interstitial lung disease”
Joseph P, Savarimuthu S, Oakland H, Cullinan M, Heerdt P, Singh I. Response to letter to the editor “noninvasive determinants of pulmonary hypertension in interstitial lung disease”. Pulmonary Circulation 2023, 13: e12238. PMID: 37180828, PMCID: PMC10166920, DOI: 10.1002/pul2.12238.Peer-Reviewed Original ResearchNoninvasive determinants of pulmonary hypertension in interstitial lung disease
Joseph P, Savarimuthu S, Zhao J, Yan X, Oakland H, Cullinan M, Heerdt P, Singh I. Noninvasive determinants of pulmonary hypertension in interstitial lung disease. Pulmonary Circulation 2023, 13: e12197. PMID: 36814586, PMCID: PMC9939578, DOI: 10.1002/pul2.12197.Peer-Reviewed Original ResearchInterstitial lung diseaseFVC/DLCO ratioPH-ILDRight heart catheterizationPulmonary hypertensionHeart catheterizationILD patientsLung diseaseDiagnostic right heart catheterizationRight ventricular systolic pressurePulmonary vascular capacitanceVentricular systolic pressureCharacteristic curve analysisMaximum oxygen uptakeExertional capacityNoninvasive determinantsSystolic pressureVascular capacitancePhysiologic evaluationPatientsNoninvasive variablesMultivariate analysisMmHgDiagnostic standardPotential initiation
2022
Non-invasive hemodynamic trends before and after delivery in severe preterm preeclampsia patients
Ackerman C, Bhinder J, Lipkind H, Reddy U, Alian A, Heerdt P, Chou J. Non-invasive hemodynamic trends before and after delivery in severe preterm preeclampsia patients. American Journal Of Obstetrics And Gynecology 2022, 226: s558. DOI: 10.1016/j.ajog.2021.11.924.Peer-Reviewed Original Research
2020
The glymphatic system and its role in cerebral homeostasis
Benveniste H, Elkin R, Heerdt P, Koundal S, Xue Y, Lee H, Wardlaw J, Tannenbaum A. The glymphatic system and its role in cerebral homeostasis. Journal Of Applied Physiology 2020, 129: 1330-1340. PMID: 33002383, PMCID: PMC7792843, DOI: 10.1152/japplphysiol.00852.2019.Peer-Reviewed Original Research