Publications by authors named "Kevin Bryan Lo"

Article Synopsis
  • SGLT2 inhibitors have been linked to reduced incidences of heart failure (HF) and related hospitalizations, but the exact mechanisms behind these benefits in invasive heart measurements are not well understood.
  • A systematic review of randomized trials using PRISMA guidelines examined the impact of SGLT2i on heart function, measuring hemodynamics before and after treatment through right heart catheterization.
  • The analysis of 3 studies involving 145 patients showed that SGLT2i significantly lowered pulmonary capillary wedge pressure at rest and during exercise, indicating potential improvements in heart function, although the effect on mean pulmonary artery pressure was not statistically significant.
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Hospitalization for ADHF is linked to poor outcomes, with residual congestion at discharge significantly increasing the risk of HF readmissions and mortality. Diuretic resistance is a major contributor to inadequate decongestion during ADHF treatment. In this review, we discuss various decongestive strategies, emphasizing the management of diuretic resistance.

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Pulmonary hypertension (PH) is a prevalent complication among patients with chronic kidney disease (CKD). In these patients, pulmonary vasodilators may be useful but are underused. We describe a group of patients with precapillary PH and advanced CKD treated with pulmonary vasodilators.

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Background: Pulmonary hypertension (pH) is a well-known complication among patients with chronic kidney disease (CKD). Arteriovenous fistulae (AVF) have been associated with pH mainly by increasing cardiac output. However, the burden of precapillary pH in individuals with CKD and an AVF is unclear.

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Introduction: Cirrhosis-associated immune dysfunction (CAID) is a chronic vasodilatory state with hyperdynamic circulation and alterations in thermoregulation that may make patients more susceptible to and mask underlying infection. This study aims to determine whether SIRS criteria are an accurate tool for predicting bloodstream infection (BSI) in cirrhosis.

Methods: In our retrospective chart review, study population included patients with cirrhosis that were 18 years or older.

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Objective: Systemic lupus erythematosus (SLE) is characterized by widespread organ inflammation. Metformin, commonly used for diabetes mellitus type 2, has been explored for its anti-inflammatory potential in SLE. This study investigates the association of metformin use on renal and cardiovascular outcomes in patients with SLE.

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Pulmonary hypertension (PH) is associated with adverse outcomes in chronic kidney disease (CKD) patients. Our study suggests mildly elevated pulmonary vascular resistance ( > 2 to ≤ 3) is independently associated with major adverse cardiovascular events at 1-year follow-up. Early diagnosis of precapillary PH in CKD patients can potentially improve clinical outcomes.

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Background: Midodrine, an FDA-approved medication for orthostatic hypotension, is also used off-label to manage hypotension in dialysis patients, including those with heart failure. However, in patients with reduced ejection fraction (HFrEF) and/or right heart failure, midodrine is potentially harmful. No known studies examine the safety of midodrine in hospitalised kidney failure patients with HF.

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Background: Patients who had acute myocardial infarction are at high risk of negative cardiac outcomes and previous SGLT2i landmark trials excluded these patients. It therefore remains unclear if SGLT2i is safe and confers beneficial cardiovascular outcomes after acute myocardial infarction.

Methods: We systematically reviewed randomized controlled trials that evaluated the outcomes of adding SGLT2i to conventional post-myocardial infarction care.

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Aims: This analysis evaluates whether proportional serial cardiac troponin (cTn) change predicts benefit from an early versus delayed invasive, or conservative treatment strategies across kidney function in non-ST-elevation acute coronary syndrome (NSTE-ACS).

Methods: Patients diagnosed with NSTE-ACS in the Veterans Health Administration between 1999 and 2022 were categorized into terciles (<20%, 20 to ≤80%, >80%) of proportional change in serial cTn. Primary outcome included mortality or rehospitalization for myocardial infarction at 6 and 12 months, in survivors of index admission.

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Background: There is paucity of data regarding the impact of concomitant heart failure (HF) on the in-hospital outcomes among hospitalized sarcoidosis patients. We aim to investigate the factors associated with concomitant HF and its impact on in-hospital outcomes among hospitalized sarcoidosis patients.

Methods: We utilized the 2018-2020 National Inpatient Sample (NIS) Database in conducting this study.

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Article Synopsis
  • The study investigates the factors leading to pulmonary infarction (PI) in patients with acute pulmonary embolism (PE), finding that age plays a significant role in its development.
  • About 24% of the 645 patients studied were diagnosed with PI, and those patients had higher rates of severe respiratory failure and mechanical ventilation needs.
  • Overall, the findings suggest that while older age seems to protect against PI, having PI increases the risk of serious respiratory complications in patients with central PE.
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Background: Guideline recommendations regarding the preferred preventive measures for postoperative atrial fibrillation (POAF) are unclear, nor have we found any review articles addressing the combination of amiodarone and beta-blockers for the prevention of POAF.

Objectives: To investigate the efficacy and safety of combination beta-blockers and amiodarone in the prevention of POAF while also comparing the use of amiodarone and beta-blockers individually.

Methods: We used Pubmed as the primary resource.

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Hydralazine is rarely associated with antineutrophilic cytoplasmic antibody (ANCA) vasculitis. In the appropriate clinical scenario, such as in a patient with pulmonary, renal, or cutaneous manifestations, finding antibodies against nuclear and cytoplasmic neutrophil antigens may suggest drug-induced vasculitis after exposure to hydralazine. We present the case of an elderly man diagnosed with focal alveolar hemorrhage with elevated concentrations of anti-myeloperoxidase antibody, anti-proteinase-3 antibody, and antinuclear antibodies in the setting of prolonged hydralazine therapy.

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Background: In prior studies, central pulmonary embolism (PE) was associated with high clot burden and was considered an independent predictor for thrombolysis. Further information about predictors of adverse outcomes in these patients is needed for better risk stratification. The objective is to describe independent predictors of adverse clinical outcomes in patients with central PE.

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Introduction: Right heart thrombus (RHT), also known as clot in transit, is an uncommon finding in pulmonary embolism (PE) that is associated with increased inpatient mortality. To date, there is no consensus on the management of RHT. Therefore, we aim to describe the clinical features, treatments, and outcomes of patients with simultaneous RHT and PE.

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Introduction: Angiotensin-converting enzyme inhibitors (ACEI), angiotensin receptor blockers (ARB), angiotensin receptor-neprilysin inhibitor (ARNI), and mineralocorticoid receptor antagonists (MRA) reduce mortality and hospitalizations in heart failure with reduced ejection fraction (HFrEF) but their use is limited in advanced chronic kidney disease (CKD).

Methods: We carried out a systematic review of studies on HFrEF and CKD patients. The mean overall percentage of reported ACEI, ARB, MRA, and ARNI use, and the proportion of trials that included patients with advanced CKD grades 4-5 (estimated glomerular filtration rate (eGFR) <15-30 ml/min/1.

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Background: Our prior analysis demonstrated no significant difference in risk of mortality or disease progression among patients with COVID-19. With the availability of findings from randomized controlled trials (RCTs), we provide an updated review of RCTs which explored the outcomes among hospitalized patients with COVID-19 treated with Angiotensin Converting Enzyme inhibitor (ACEis)/Angiotensin Receptor Blockers (ARBs) versus control.

Research Design And Methods: This systematic review and meta-analysis covers RCTs exploring mortality, intensive care unit admission, and mechanical ventilation outcomes among hospitalized COVID-19 patients treated with ACEi/ARBs.

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Background: There is paucity of data regarding the characteristics and outcomes of patients admitted for ST Elevation Myocardial Infarction (STEMI) complicated by cardiogenic shock (CS) with concomitant Coronavirus Disease 2019 (COVID-19) infection.

Methods: Using the National Inpatient Sample (NIS) Database for the year 2020, we conducted a retrospective cohort study to investigate the outcomes of patients who sustained STEMI-associated cardiogenic shock (STEMI-CS) with concomitant COVID-19 infection looking at its impact on in-hospital mortality and secondarily at the in-hospital procedure and intervention utilization rates as well as hospital length of stay.

Results: We identified a total of 22,775 patients with STEMI-CS, of which 1.

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Background: A substantial proportion of patients with heart failure and kidney disease have poorly controlled blood pressures. This study aimed to evaluate patterns of blood pressure after initiation of an angiotensin receptor neprilysin inhibitor (ARNI) or an angiotensin-converting enzyme inhibitor (ACEI)/angiotensin receptor blocker (ARB) across the spectrum of kidney function.

Methods: Between 2016 and 2020, we evaluated 26,091 patients admitted to a Veterans Affairs hospital for an acute heart failure exacerbation with reduced ejection fraction.

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The burden of adverse cardiorenal outcomes among patients with the trifecta of diabetes, heart failure (HF) and chronic kidney disease (CKD) remains high. Steroidal mineralocorticoid receptor antagonists (MRAs) have been shown to improve clinical outcomes in patients with HF, however, there is significant underutilization of these agents, especially in patients with advanced CKD. Non-steroidal MRAs are an emerging therapeutic option for patients with diabetic kidney disease and are now guideline-supported in this population.

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