Michael S. Kiernan
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Previous Organizations / Institutes
The organizations / institutes from the scholar's other articles in the past ten years
Research Subjects
Michael S. Kiernan has a total of 254 co-authors. Here are the top co-authors by number of shared publications:
- Amanda Ruth Vest
Kaufman Center for Heart Failure Treatment and Recovery, Department of Cardiovascular Medicine, Heart, Vascular and Thoracic Institute, Cleveland Clinic, Cleveland, OH, USA
11 shared publications David DeNofrio
Division of Cardiology, Cardiovascular Center, Tufts Medical Center, Boston, Massachusetts
7 shared publications- Gaurav Gulati
CardioVascular Center, Tufts Medical Center, Boston, Massachusetts
5 shared publications - Masashi Kawabori
Division of Cardiac Surgery, University of Kentucky, Lexington, Kentucky
4 shared publications - David DeNofrio
CardioVascular Center, Tufts Medical Center, Boston, Massachusetts
3 shared publications Gregory S. Couper
CardioVascular Center Tufts Medical Center Boston MA USA
3 shared publications
Latest Publications
- 21 May 2026
- Published by Wolters Kluwer Health in ASAIO Journal
Inpatient Psychiatric Admission of a Durable Left Ventricular Assist Device Recipient: Multidisciplinary Care Plan and Policy Framework
Psychiatric comorbidities are increasingly common among patients with left ventricular assist devices (LVADs) and are associated with adverse outcomes. Access to inpatient psychiatric care for these patients is limited due to their specialized care needs, lack of staff training and hospital protocols, and regulatory requirements. We present a case of a patient with an LVAD and severe depression requiring inpatient psychiatric hospitalization treated at our center. We outline a multidisciplinary framework for staff training, patient monitoring, and regulatory compliance that allows for safe and effective patient care in the inpatient psychiatry unit. This framework can serve as a model for other centers to expand access to inpatient psychiatric care for this underserved population.
- 21 May 2026
- Published by Wolters Kluwer Health in ASAIO Journal
Inpatient Psychiatric Admission of a Durable Left Ventricular Assist Device Recipient: Multidisciplinary Care Plan and Policy Framework
Psychiatric comorbidities are increasingly common among patients with left ventricular assist devices (LVADs) and are associated with adverse outcomes. Access to inpatient psychiatric care for these patients is limited due to their specialized care needs, lack of staff training and hospital protocols, and regulatory requirements. We present a case of a patient with an LVAD and severe depression requiring inpatient psychiatric hospitalization treated at our center. We outline a multidisciplinary framework for staff training, patient monitoring, and regulatory compliance that allows for safe and effective patient care in the inpatient psychiatry unit. This framework can serve as a model for other centers to expand access to inpatient psychiatric care for this underserved population.
- 10 October 2024
- Published by Elsevier in The Journal of Heart and Lung Transplantation
- Vol. 44 (2) , 215-224
Impact of type of mechanical circulatory support before transplant on postorthotopic heart transplantation infections
- 10 October 2024
- Published by Elsevier in The Journal of Heart and Lung Transplantation
- Vol. 44 (2) , 215-224
Impact of type of mechanical circulatory support before transplant on postorthotopic heart transplantation infections
- 1 October 2024
- Published by Wolters Kluwer Health in Circulation: Heart Failure
- Vol. 17 (10) , e011743
Single Arterial Access for VA-ECMO–Assisted Stenting of a Left Ventricular Assist Device Outflow Graft Obstruction in the Setting of an Oversewn Aortic Valve
- 1 October 2024
- Published by Wolters Kluwer Health in Circulation: Heart Failure
- Vol. 17 (10) , e011743
Single Arterial Access for VA-ECMO–Assisted Stenting of a Left Ventricular Assist Device Outflow Graft Obstruction in the Setting of an Oversewn Aortic Valve
- 24 September 2024
- Published by Wolters Kluwer Health in ASAIO Journal
- Vol. 71 (3) , 222-228
The Association Between Pulmonary Vascular Resistance and Posttransplant Outcomes Differs by Left Ventricular Assist Device Status
Elevated pulmonary vascular resistance (PVR) is a risk factor for mortality after heart transplantation (HT), but whether this association differs for patients with and without left ventricular assist device (LVAD) support before HT is unknown. We analyzed adult first-time HT recipients from the United Network for Organ Sharing (UNOS) registry transplanted between 2010 and 2021. We quantified the association between PVR and the outcomes of 30 day graft failure and 1 year mortality using multivariable logistic regression, stratified by LVAD support status at the time of HT. Pulmonary vascular resistance was modeled using restricted cubic splines to identify clinically relevant risk thresholds. We also examined the association with 10 year survival using multivariable Cox proportional hazards regression. For PVR values less than approximately 2 WU, higher PVR was independently associated with a higher risk of early graft failure (odds ratio [OR] = 1.58, 95% CI: 1.06–2.36) and a higher risk of 1 year mortality (OR = 1.32, 95% CI: 1.10–1.59) among LVAD patients only (interaction p = 0.023 and 0.03, respectively). However, for patients surviving at least 1 year, PVR was not associated with long-term mortality among either subgroup. Whether more aggressive reduction of PVR among HT candidates supported with LVADs can mitigate these risks requires further study.
- 24 September 2024
- Published by Wolters Kluwer Health in ASAIO Journal
- Vol. 71 (3) , 222-228
The Association Between Pulmonary Vascular Resistance and Posttransplant Outcomes Differs by Left Ventricular Assist Device Status
Elevated pulmonary vascular resistance (PVR) is a risk factor for mortality after heart transplantation (HT), but whether this association differs for patients with and without left ventricular assist device (LVAD) support before HT is unknown. We analyzed adult first-time HT recipients from the United Network for Organ Sharing (UNOS) registry transplanted between 2010 and 2021. We quantified the association between PVR and the outcomes of 30 day graft failure and 1 year mortality using multivariable logistic regression, stratified by LVAD support status at the time of HT. Pulmonary vascular resistance was modeled using restricted cubic splines to identify clinically relevant risk thresholds. We also examined the association with 10 year survival using multivariable Cox proportional hazards regression. For PVR values less than approximately 2 WU, higher PVR was independently associated with a higher risk of early graft failure (odds ratio [OR] = 1.58, 95% CI: 1.06–2.36) and a higher risk of 1 year mortality (OR = 1.32, 95% CI: 1.10–1.59) among LVAD patients only (interaction p = 0.023 and 0.03, respectively). However, for patients surviving at least 1 year, PVR was not associated with long-term mortality among either subgroup. Whether more aggressive reduction of PVR among HT candidates supported with LVADs can mitigate these risks requires further study.
- 11 September 2024
- Published by Wolters Kluwer Health in Journal of Cardiovascular Nursing
- Vol. 40 (4) , 345-355
Association of Novel Ventricular Assist Device Self-report Measures With Overall Health-Related Quality of Life
Background: Few study authors examined factors influencing health-related quality of life (HRQOL) early after left ventricular assist device (LVAD) implantation. Objective: The purpose of this study was to determine whether 5 novel self-report measures and other variables were significantly associated with overall HRQOL at 3 months after LVAD surgery. Methods: Patients were recruited between October 26, 2016, and February 29, 2020, from 12 US sites. Data were collected before LVAD implantation and at 3 months post LVAD implantation. Overall HRQOL measures included the Kansas City Cardiomyopathy Questionnaire-12 (KCCQ-12) overall summary score (OSS) and EuroQol 5-dimension- 3L visual analog scale. Potential factors associated with overall HRQOL included 5 novel self-report measures (Satisfaction with Treatment, Being Bothered by VAD Self-care and Limitations, VAD Team Communication, Self-efficacy regarding VAD Self-care, and Stigma), and demographic and clinical characteristics. Statistics included regression analyses. Results: Of enrollees, 242 completed self-report measures at baseline, and 142 completed measures 3 months postoperatively. Patients were 55 ± 13 years old, with 21% female, 24% non-White, 39% high school or lower educated, and 47% destination therapy. Using the KCCQ-12 OSS, higher Satisfaction with Treatment was associated with a higher KCCQ-12 OSS; Being Bothered by VAD Self-care and Limitations, high school or lower education, chest incision pain, cardiac dysrhythmias within 3 postoperative months, and peripheral edema were associated with a worse KCCQ-12 OSS (R 2 = 0.524). Factors associated with a worse 3-month EuroQol 5-dimension-3L visual analog scale were female sex, adverse events within 3 months post implantation (cardiac dysrhythmias, bleeding, and venous thrombosis), and chest incision pain (R 2 = 0.229). No factors were associated with a higher EuroQol 5-dimension-3L visual analog scale score at 3 months. Conclusions: Two novel measures, demographics, postimplantation adverse events, and symptoms were associated with post-LVAD KCCQ-12 OSS early after surgery.
- 11 September 2024
- Published by Wolters Kluwer Health in Journal of Cardiovascular Nursing
- Vol. 40 (4) , 345-355
Association of Novel Ventricular Assist Device Self-report Measures With Overall Health-Related Quality of Life
Background: Few study authors examined factors influencing health-related quality of life (HRQOL) early after left ventricular assist device (LVAD) implantation. Objective: The purpose of this study was to determine whether 5 novel self-report measures and other variables were significantly associated with overall HRQOL at 3 months after LVAD surgery. Methods: Patients were recruited between October 26, 2016, and February 29, 2020, from 12 US sites. Data were collected before LVAD implantation and at 3 months post LVAD implantation. Overall HRQOL measures included the Kansas City Cardiomyopathy Questionnaire-12 (KCCQ-12) overall summary score (OSS) and EuroQol 5-dimension- 3L visual analog scale. Potential factors associated with overall HRQOL included 5 novel self-report measures (Satisfaction with Treatment, Being Bothered by VAD Self-care and Limitations, VAD Team Communication, Self-efficacy regarding VAD Self-care, and Stigma), and demographic and clinical characteristics. Statistics included regression analyses. Results: Of enrollees, 242 completed self-report measures at baseline, and 142 completed measures 3 months postoperatively. Patients were 55 ± 13 years old, with 21% female, 24% non-White, 39% high school or lower educated, and 47% destination therapy. Using the KCCQ-12 OSS, higher Satisfaction with Treatment was associated with a higher KCCQ-12 OSS; Being Bothered by VAD Self-care and Limitations, high school or lower education, chest incision pain, cardiac dysrhythmias within 3 postoperative months, and peripheral edema were associated with a worse KCCQ-12 OSS (R 2 = 0.524). Factors associated with a worse 3-month EuroQol 5-dimension-3L visual analog scale were female sex, adverse events within 3 months post implantation (cardiac dysrhythmias, bleeding, and venous thrombosis), and chest incision pain (R 2 = 0.229). No factors were associated with a higher EuroQol 5-dimension-3L visual analog scale score at 3 months. Conclusions: Two novel measures, demographics, postimplantation adverse events, and symptoms were associated with post-LVAD KCCQ-12 OSS early after surgery.
- 1 April 2024
- Published by Elsevier in JACC: Heart Failure
- Vol. 12 (4) , 737-739
Is an ECG Even Necessary?
- 1 April 2024
- Published by Elsevier in JACC: Heart Failure
- Vol. 12 (4) , 737-739
Is an ECG Even Necessary?
- 15 August 2023
- Published by Elsevier in The Journal of Heart and Lung Transplantation
- Vol. 43 (1) , 36-50
Novel measures to assess ventricular assist device patient-reported outcomes: Findings from the MCS A-QOL study
- 15 August 2023
- Published by Elsevier in The Journal of Heart and Lung Transplantation
- Vol. 43 (1) , 36-50
Novel measures to assess ventricular assist device patient-reported outcomes: Findings from the MCS A-QOL study
- Open Access
- 4 July 2023
- Published by Wolters Kluwer Health in Journal of the American Heart Association
- Vol. 12 (13) , e029086
Cardiac Cachexia in Left Ventricular Assist Device Recipients and the Implications of Weight Gain Early After Implantation
Background: Severe cardiac cachexia or malnutrition are commonly considered relative contraindications to left ventricular assist device (LVAD) implantation, but post‐LVAD prognosis for patients with cachexia is uncertain. Methods and Results: Intermacs (Interagency Registry for Mechanically Assisted Circulatory Support) 2006 to 2017 was queried for the preimplantation variable cachexia/malnutrition. Cox proportional hazards modeling examined the relationship between cachexia and LVAD outcomes. Of 20 332 primary LVAD recipients with available data, 516 (2.54%) were reported to have baseline cachexia and had higher risk baseline characteristics. Cachexia was associated with higher mortality during LVAD support (unadjusted hazard ratio [HR], 1.36 [95% CI, 1.18–1.56]; P P =0.005). Mean weight change at 12 months was +3.9±9.4 kg. Across the cohort, weight gain ≥5% during the first 3 months of LVAD support was associated with lower mortality (unadjusted HR, 0.90 [95% CI, 0.84–0.98]; P =0.012; adjusted HR, 0.89 [95% CI, 0.82–0.97]; P =0.006). Conclusions: The proportion of LVAD recipients recognized to have cachexia preimplantation was low at 2.5%. Recognized cachexia was independently associated with higher mortality during LVAD support. Early weight gain ≥5% was independently associated with lower mortality during subsequent LVAD support.
- 4 July 2023
- Published by Wolters Kluwer Health in Journal of the American Heart Association
- Vol. 12 (13) , e029086
Open AccessCardiac Cachexia in Left Ventricular Assist Device Recipients and the Implications of Weight Gain Early After Implantation
Background: Severe cardiac cachexia or malnutrition are commonly considered relative contraindications to left ventricular assist device (LVAD) implantation, but post‐LVAD prognosis for patients with cachexia is uncertain. Methods and Results: Intermacs (Interagency Registry for Mechanically Assisted Circulatory Support) 2006 to 2017 was queried for the preimplantation variable cachexia/malnutrition. Cox proportional hazards modeling examined the relationship between cachexia and LVAD outcomes. Of 20 332 primary LVAD recipients with available data, 516 (2.54%) were reported to have baseline cachexia and had higher risk baseline characteristics. Cachexia was associated with higher mortality during LVAD support (unadjusted hazard ratio [HR], 1.36 [95% CI, 1.18–1.56]; P P =0.005). Mean weight change at 12 months was +3.9±9.4 kg. Across the cohort, weight gain ≥5% during the first 3 months of LVAD support was associated with lower mortality (unadjusted HR, 0.90 [95% CI, 0.84–0.98]; P =0.012; adjusted HR, 0.89 [95% CI, 0.82–0.97]; P =0.006). Conclusions: The proportion of LVAD recipients recognized to have cachexia preimplantation was low at 2.5%. Recognized cachexia was independently associated with higher mortality during LVAD support. Early weight gain ≥5% was independently associated with lower mortality during subsequent LVAD support.
- 1 November 2022
- Published by Elsevier in Journal of Stroke and Cerebrovascular Diseases
- Vol. 31 (12) , 106869
Radiographic risk factors for intracranial hemorrhage in patients with left ventricular assist devices
- 1 November 2022
- Published by Elsevier in Journal of Stroke and Cerebrovascular Diseases
- Vol. 31 (12) , 106869
Radiographic risk factors for intracranial hemorrhage in patients with left ventricular assist devices
- Open Access
- 25 August 2022
- Published by Wolters Kluwer Health in Clinical and Translational Gastroenterology
- Vol. 13 (10) , e00526
A Multicenter Study of Left Ventricular Assist Device-Related Gastrointestinal Bleeding
INTRODUCTION: Continuous left ventricular assist devices (LVADs) offer hemodynamic support in advanced and decompensated heart failure but are often complicated by gastrointestinal bleeding (GIB) in medically fragile patients. METHODS: We performed a retrospective analysis of 475 consecutive patients who underwent LVAD implantation at the Massachusetts General Hospital and Tufts Medical Center from 2008 to 2019 and identified 128 patients with clinically significant GIB. Clinical characteristics of each bleeding event, including procedures and interventions, were recorded. We examined LVAD patients with overt and occult presentations to determine diagnostic endoscopic yield and analyzed predictors of recurrent GIB. RESULTS: We identified 128 unique patients with LVAD implantation complicated by GIB. No significant difference was observed based on study center, underlying cardiomyopathy, race/ethnicity, serum indices, and medications used. Overt bleeders presented more commonly during LVAD implantation admission (P = 0.001) than occult bleeders. Occult bleed presentations had only 1 lower and no middle GI bleed source identified, despite similar workups to overt bleeds. Destination therapy (e.g., among nontransplant candidates) LVAD implantation (odds ratio 2.38, 95% confidence interval 1.05–5.58) and a history of GIB (odds ratio 3.85, 95% confidence interval 1.29–12.7) were independently associated with an increased risk of recurrent GIB-related hospitalization. DISCUSSION: Our findings confirm a high rate of GIB, especially in destination LVAD patients, and show a low diagnostic yield for colonoscopy and middle GI bleed assessments in LVAD patients with occult bleeds. Overt bleeding was more common and associated with vascular malformations. Although endoscopic interventions stopped active hemorrhage, GIB often recurred.
- 25 August 2022
- Published by Wolters Kluwer Health in Clinical and Translational Gastroenterology
- Vol. 13 (10) , e00526
Open AccessA Multicenter Study of Left Ventricular Assist Device-Related Gastrointestinal Bleeding
INTRODUCTION: Continuous left ventricular assist devices (LVADs) offer hemodynamic support in advanced and decompensated heart failure but are often complicated by gastrointestinal bleeding (GIB) in medically fragile patients. METHODS: We performed a retrospective analysis of 475 consecutive patients who underwent LVAD implantation at the Massachusetts General Hospital and Tufts Medical Center from 2008 to 2019 and identified 128 patients with clinically significant GIB. Clinical characteristics of each bleeding event, including procedures and interventions, were recorded. We examined LVAD patients with overt and occult presentations to determine diagnostic endoscopic yield and analyzed predictors of recurrent GIB. RESULTS: We identified 128 unique patients with LVAD implantation complicated by GIB. No significant difference was observed based on study center, underlying cardiomyopathy, race/ethnicity, serum indices, and medications used. Overt bleeders presented more commonly during LVAD implantation admission (P = 0.001) than occult bleeders. Occult bleed presentations had only 1 lower and no middle GI bleed source identified, despite similar workups to overt bleeds. Destination therapy (e.g., among nontransplant candidates) LVAD implantation (odds ratio 2.38, 95% confidence interval 1.05–5.58) and a history of GIB (odds ratio 3.85, 95% confidence interval 1.29–12.7) were independently associated with an increased risk of recurrent GIB-related hospitalization. DISCUSSION: Our findings confirm a high rate of GIB, especially in destination LVAD patients, and show a low diagnostic yield for colonoscopy and middle GI bleed assessments in LVAD patients with occult bleeds. Overt bleeding was more common and associated with vascular malformations. Although endoscopic interventions stopped active hemorrhage, GIB often recurred.