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Alkhouli, Mohamad

https://orcid.org/0000-0003-3847-0959

Mayo Clinic

Mayo Clinic

Citations 151

Determinants of Morbidity and Mortality Associated With Isolated Tricuspid Valve Surgery
Kawsara, Akram , Eleid, Mackram F. , Rihal, Charanjit S. , Nishimura, Rick A. , Alkhouli, Mohamad , Alkhouli, Mohamad , Nishimura, Rick A , Alqahtani, Fahad , Nkomo, Vuyisile T. , Pislaru, Sorin V. , Rihal, Charanjit S. , Schaff, Hartzell V. , Crestanello, Juan A.

Journal of the American Heart Association | January 5, 2021 | Volume: 10 | Issue: 2 | Pages: No page available

10.1161/jaha.120.018417 Get It

Background Whether the poor outcomes of isolated tricuspid valve surgery are related to the operation itself or to certain patient characteristics including late referral is unknown. Methods and Results Adult patients who underwent isolated tricuspid valve surgery were identified in the Nationwide Readmissions Database (2016–2017). Patients who had redo tricuspid valve surgery, endocarditis, or congenital heart disease were excluded. Multivariable logistic regression was performed to identify contributors to postoperative mortality. A total of 1513 patients were included (mean age 55.7±16.6 years, 49.6% women). Surrogates of late referral were frequent: 41% of patients were admitted with decompensated heart failure, 44.3% had a nonelective surgery status, 16.8% had advanced liver disease, and 31% had an unplanned hospitalization in the prior 90 days. The operation was performed on day 0 to 1 of the hospitalization in only 50% of patients, and beyond day 10 in 22% of patients. In‐hospital mortality occurred in 8.7% of patients. Median length of stay was 14 days (7–35 days), and median cost was $87 223 ($43 122–$200 872). In multivariable logistic regression analysis, surrogates for late referrals (acute heart failure decompensation, nonelective surgery status, or advanced liver disease) were the strongest predictors of in‐hospital mortality (odds ratio [OR], 4.75; 95% CI, 2.74–8.25 [ P <0.001]). This was also consistent in a second model incorporating unplanned hospitalizations in the 90 days before surgery as a surrogate for late referral (OR, 5.50; 95% CI, 2.28–10.71 [ P <0.001]). Conclusions The poor outcomes of isolated tricuspid valve surgery may be largely explained by the late referral for intervention. Studies are needed to determine the role of early intervention for severe isolated tricuspid regurgitation.
Efficacy and safety for the achievement of guideline-recommended lower low-density lipoprotein cholesterol levels: a systematic review and meta-analysis
Khan, Safi U. , Khan, Muhammad U. , Khan, Muhammad Shahzeb , Khan, Muhammad Zia , Rashid, Muhammad , Alkhouli, Mohamad , Khan, Muhammad Zia , Alkhouli, Mohamad , Khan, Safi , Virani, Salim S. , Kalra, Ankur , Blaha, Michael Joseph , Blumenthal, Roger S. , Michos, Erin D.

European Journal of Preventive Cardiology | January 1, 2021 | Volume: 28 | Issue: 18 | Pages: 2001-2009

10.1093/eurjpc/zwaa093 Get It

Abstract Aim The 2018 American Heart Association/American College of Cardiology/Multi-Society Cholesterol Guidelines recommended the addition of non-statins to statin therapy for high-risk secondary prevention patients above a low-density lipoprotein cholesterol (LDL-C) threshold of ≥70 mg/dL (1.8 mmol/L). We compared effectiveness and safety of treatment to achieve lower (&lt;70) vs. higher (≥70 mg/dL) LDL-C among patients receiving intensive lipid-lowering therapy (statins alone or plus ezetimibe or proprotein convertase subtilisin/kexin type 9 inhibitors). Methods and results Eleven randomized controlled trials (130 070 patients), comparing intensive vs. less-intensive lipid-lowering therapy, with follow-up ≥6 months and sample size ≥1000 patients were selected. Meta-analysis was reported as random effects risk ratios (RRs) [95% confidence intervals] and absolute risk differences (ARDs) as incident cases per 1000 person-years. The median LDL-C levels achieved in lower LDL-C vs. higher LDL-C groups were 62 and 103 mg/dL, respectively. At median follow-up of 2 years, the lower LDL-C vs. higher LDL-C group was associated with significant reduction in all-cause mortality [ARD −1.56; RR 0.94 (0.89–1.00)], cardiovascular mortality [ARD −1.49; RR 0.90 (0.81–1.00)], and reduced risk of myocardial infarction, cerebrovascular events, revascularization, and major adverse cardiovascular events (MACE). These benefits were achieved without increasing the risk of incident cancer, diabetes mellitus, or haemorrhagic stroke. All-cause mortality benefit in lower LDL-C group was limited to statin therapy and those with higher baseline LDL-C (≥100 mg/dL). However, the RR reduction in ischaemic and safety endpoints was independent of baseline LDL-C or drug therapy. Conclusion This meta-analysis showed that treatment to achieve LDL-C levels below 70 mg/dL using intensive lipid-lowering therapy can safely reduce the risk of mortality and MACE.
Effect of primary percutaneous coronary intervention on in-hospital outcomes among active cancer patients presenting with ST-elevation myocardial infarction: a propensity score matching analysis
Mohamed, Mohamed O. , Spall, Harriette G.C. Van , Kontopantelis, Evangelos , Barac, Ana , Elgendy, Islam Y. , Khan, Safi U. , Shoaib, Ahmad , Bhatt, Deepak L. , Mamas, Mamas A. , Barac, Ana , Elgendy, Islam Y , Khan, Safi , Kwok, Chun Shing , Shoaib, Ahmad , Bhatt, Deepak L , Mamas, Mamas , Mohamed, Mohamed O , Van Spall, Harriette G C , Alkhouli, Mohamad

European Heart Journal. Acute Cardiovascular Care | December 31, 2020 | Volume: 10 | Issue: 8 | Pages: 829-839

10.1093/ehjacc/zuaa032 Get It

Abstract Aims Primary percutaneous coronary intervention (pPCI) is the gold standard, guideline-recommended revascularization strategy in patients presenting with ST-elevation myocardial infarction (STEMI). However, there are limited data on its use and effectiveness among patients with active cancer presenting with STEMI. Methods and results All STEMI hospitalizations between 2004 and 2015 from the National Inpatient Sample were retrospectively analysed, stratified by cancer type. Propensity score matching was performed to estimate the average treatment effect of pPCI in each cancer on in-hospital adverse events, including major adverse cardiovascular and cerebrovascular events (MACCE) and its individual components, and compare treatment effect between cancer and non-cancer patients. Out of 1 870 815 patients with STEMI, 38 932 (2.1%) had a current cancer diagnosis [haematological: 11 251 (28.9% of all cancers); breast: 4675 (12.0%); lung: 9538 (24.5%); colon: 3749 (9.6%); prostate: 9719 (25.0%)]. Patients with cancer received pPCI less commonly than those without cancer (from 54.2% for lung cancer to 70.6% for haematological vs. 82.3% in no cancer). Performance of pPCI was strongly associated with lower adjusted probabilities of MACCE and all-cause mortality in the cancer groups compared with the no cancer group. There was no significant difference in estimated average pPCI treatment effect between the cancer groups and non-cancer group. Conclusion Primary percutaneous coronary intervention is underutilized in STEMI patients with current cancer despite its significantly lower associated rates of in-hospital all-cause mortality and MACCE that is comparable to patients without cancer. Further work is required to assess the long-term benefit and safety of pPCI in this high-risk group.
Early intervention or watchful waiting for asymptomatic severe aortic stenosis: a systematic review and meta-analysis
Ullah, Waqas , Gowda, S.G, Khan, Musadiq, Al‐Khadra, Yasser , Rashid, M R Muhammad, Mohamed, Mohamed O. , Kapadia, Samir , Bagur, R.B, Alraies, Mohammed C., Mohamed, Mohamed O , Sattar, Yasar , Alkhouli, Mohamad , Mamas, Mamas A.

European Heart Journal | November 26, 2020 | Volume: 41 | Issue: Supplement_2 | Pages: No page available

10.1093/ehjci/ehaa946.1989 Get It

Abstract Background The management of patients with severe but asymptomatic aortic stenosis (AS) is a challenge of daily practice. Evidence on early aortic valve replacement (AVR) versus symptom-driven approach is controversial. Methods Electronic databases were searched and articles comparing early-AVR with conservative management for severe asymptomatic AS were identified. The pooled unadjusted odds ratio (OR) was computed using a random-effects model. Results A total of 10 studies (observational=9, and randomized clinical trials=1) consisting of 5,291 patients were included. On a mean follow up duration of 4 years, the odds of early-AVR vs conservative management were in favour for early intervention in terms of cardiovascular mortality (OR 0.26, 95% CI 0.13–0.53, p=0.0002, figure-1) and all-cause mortality (OR 0.27, 95% CI: 0.17–0.41, p≤00001). The number needed to treat (NNT) by performing early AVR (either SAVR or TAVR) to prevent one death secondary to either cardiovascular or all-cause was 8 (95% CI: 6–10), and 5 (95% CI, 4.2–5.4) respectively. The odds of all-cause mortality in a selected patient population undergoing surgical AVR (SAVR) (OR 0.17, 95% CI 0.10–0.29, p≤0.00001) or transcatheter AVR (TAVR) (OR 0.45, 95% CI 0.31–0.64, p≤0.0001) were significantly lower compared to patients who were managed conservatively. A subgroup sensitivity analysis based on severe vs. very severe AS and early vs. symptom based AVR also mirrored the findings of overall results. Conclusions Patients with asymptomatic aortic valve stenosis have lower odds of all-cause and cardiovascular mortality when managed with early-AVR compared to conservative management. Figure 1 Funding Acknowledgement Type of funding source: None
Isolated severe tricuspid regurgitation: an unrecognised and undertreated problem of the forgotten valve
Reddy, Yogesh N.V. , Alkhouli, Mohamad , Nishimura, Rick A., Nishimura, Rick , Alkhouli, Mohamad

Heart | November 24, 2020 | Volume: 107 | Issue: 5 | Pages: 350-352

10.1136/heartjnl-2020-318399 Get It

Mortality and functional outcomes of endovascular stroke therapy in the United States
Harris, Alyssa Hartsell, Hohmann, Samuel F. , Alqahtani, Fahad, Osman, Mohammed , Alqahtani, Fahad , Harris, Alyssa , Alkhouli, Mohamad

Catheterization and Cardiovascular Interventions | November 16, 2020 | Volume: 97 | Issue: 3 | Pages: 470-474

10.1002/ccd.29385 Get It

AbstractBackgroundWe sought to evaluate the nationwide trends in the characteristics and outcomes of for endovascular stroke therapy in contemporary practice.MethodsWe selected patients with acute ischemic stroke who underwent endovascular stroke therapy between 01 October 2015 and 30 September 2019 in a large academic consortium database. The end points of this study were (a) in‐hospital mortality and functional outcomes and, (b) predictors of poor functional outcome, defined as death or discharge to hospice, or to a long‐term nursing facility.ResultsAmong the 22,193 included patients; 50.3% were females, and 66.5% were white. Mean age was 68±15 years. Poor functional outcomes occurred in 8,274 patients (37.4%), of whom 2,741 (12.4%) died in the hospital, 1,345 (6.1%) were discharged to hospice, and 4,188 (18.9%) were discharged to other long‐term facilities. Most common in‐hospital complications were mechanical ventilation (32.3%), intracranial hemorrhage (18.9%), and acute kidney injury (15.6%). Median total and intensive‐care length‐of‐stay were 7 days (IQR = 4–9), and 2 days (IQR = 1–4), respectively. Median cost was $36,609 (IQR = $26,034–$54,313). In a multi‐logistic regression analysis; age, hypertension, diabetes, anemia, heart failure, vascular disease, chronic pulmonary disease, renal insufficiency, Medicare/medicaid insurance, transfer from nonendovascular capable hospital, and low procedural volume independently predicted poor functional outcomes. Tissue plasminogen activator use was associated with better functional outcomes.ConclusionThere is a substantial growth in the performance of endovascular stroke interventions in the United States in recent years, and those were associated with favorable short‐term outcomes.
Abstract 17229: Predictors of 30 and 180 Days Readmissions After Transcatheter Aortic Valve Replacement in the United States
Shafi, Irfan, Mishra, Tushar , Yazdanpanah, Omid , Sebastian, Joseph , Shafi, Irfan , Mir, Tanveer , Akers, Katherine G. , Alkhouli, Mohamad

Circulation | November 12, 2020 | Volume: 142 | Issue: Suppl_3 | Pages: No page available

10.1161/circ.142.suppl_3.17229 Get It

Background: Readmission rates are a widely accepted quality indicator. Our objective was to study characteristics of readmissions at 30 and 180 days after Transcatheter Aortic Valve Replacement (TAVR). Methods: Patients undergoing TAVR between 2016 and 2017 in the U.S. Nationwide Readmission Database were evaluated for the rates, causes, predictors, and mortality of readmission at 30 and multiple readmission within 180 days after index discharge. Results: This analysis included 89601 hospitalizations; 13% were readmitted within 30 days and 8.7% were readmitted multiple times within 180 days. Most important predictors of readmissions, were Length of stay >5 days during index hospitalization (hazard ratio [HR], 1.59; 95% confidence interval [CI], 1.47-1.71 at 30 days & HR 1.72; 95% CI 1.58-1.87 at 180 days), > 4 Charlson comorbidities (HR 1.27; 95% CI, 1.19-1.34 at 30 days & HR, 1.54; 95% CI, 1.44-1.65 at 180 days), discharge to skilled nursing facility (HR, 1.34; 95% CI, 1.24-1.44 at 30 days & HR, 1.49; 95% CI, 1.36-1.65 ), atrial fibrillation (HR, 1.25; 95% CI, 1.18-1.32 at 30 days & HR, 1.35; 95% CI, 1.26-1.45 at 180 days), Transapical TAVR approach (HR, 1.21; 95% CI, 1.04-1.42 & HR, 1.20; 95% CI, 1.01-1.43 at 180 days), and acute kidney injury (HR, 1.22; 95% CI, 1.12-1.32 at 30 days & HR, 1.1; 95% CI, 1.01-1.21 at 180 days)(Figure 1 A,B). 67% patients were readmitted at least 1 time within 180 days, 22% were readmitted 2 times within 180days and 11% were readmitted more than 3 times within 180 days. Readmissions were because of noncardiac causes in 67.8% of cases and because of cardiac causes in 32.2% of cases. Conclusion: The study demonstrates that baseline comorbidities alongside non-cardiac causes contributed significantly to readmissions after TAVR at both 30 days and 180 days. The results help to target the susceptible patients in both short as well as long term and to provide evidence-based interventions to reduce the risk and financial burden associated with readmissions.
Demographic, Regional, and State‐Level Trends of Mortality in Patients With Aortic Stenosis in United States, 2008 to 2018
Kalra, Ankur , Kapadia, Samir , Khan, Muhammad U. , Khan, Muhammad Zia , Khan, Muhammad Shahzeb , Mamas, Mamas A. , Warraich, Haider J. , Nasir, Khurram , Michos, Erin D. , Kalra, Ankur , Mamas, Mamas , Khan, Muhammad Zia , Kapadia, Samir , Michos, Erin D , Khan, Safi U. , Alkhouli, Mohamad

Journal of the American Heart Association | October 19, 2020 | Volume: 9 | Issue: 21 | Pages: No page available

10.1161/jaha.120.017433 Get It

Background Aortic stenosis–related mortality might vary across demographic subsets, regions, and states in the United States. Methods and Results We reviewed the death certificate data from the Centers for Disease Control and Prevention Wide‐Ranging OnLine Data for Epidemiologic Research database to examine aortic stenosis–related mortality trends from 2008 to 2018. Crude and age‐adjusted mortality rates (AAMRs) per 100 000 people and annual percentage change with 95% CIs were calculated. Between 2008 and 2018, AAMR reduced from 12.7 to 11.5 (average annual percentage change, −1.0 [95% CI, −1.5 to −0.5]), because of an accelerated decline between 2015 and 2018 (annual percentage change, −4.4 [95% CI, −6.0 to −2.7]). Older (aged >85 years), male, and White patients had higher death rates than younger, female, and non‐White patients, respectively. Although mortality reduction was similar across sexes, significant mortality reduction was limited to White patients only. The AAMRs were higher in rural than urban areas. States with AAMRs >90th percentile were distributed in the West and the Northeast, and <10th percentile in the South. The AAMRs for sex and race were highest in the West and lowest in the South. None of the states located in the Midwest showed a significant reduction in mortality. Mortality remained stable for hospital setting and nursing home/long‐term care facility, except that the number of deaths increased at home and hospice facility since 2014. Conclusions The reduction in mortality in patients with aortic stenosis was not consistent among demographic subsets and states. The substantial public health and economic implications call for determination of underlying clinical and socioeconomic factors to narrow the gap.
Entry bias in cardiovascular clinical trials
Khan, Safi U. , Lone, Ahmad Naeem , Alkhouli, Mohamad , Alkhouli, Mohamad , Khan, Safi

European Heart Journal - Quality of Care and Clinical Outcomes | October 15, 2020 | Volume: 7 | Issue: 2 | Pages: 216-217

10.1093/ehjqcco/qcaa083 Get It

Sex‐stratified analysis of the safety of percutaneous left atrial appendage occlusion
Munir, Muhammad Bilal , Kawsara, Akram , Balla, Sudarshan , Daggubati, Ramesh , Osman, Mohammed , Kawsara, Akram , Munir, Muhammad Bilal , Balla, Sudarshan , Patel, Brijesh D. , Kheiri, Babikir , Michos, Erin D. , Alkhouli, Mohamad

Catheterization and Cardiovascular Interventions | October 13, 2020 | Volume: 97 | Issue: 5 | Pages: 885-892

10.1002/ccd.29282 Get It

AbstractObjectives and BackgroundThere is insufficient current evidence about whether sex impacts outcomes of percutaneous left atrial appendage occlusion (LAAO). The aim of this study was to investigate the association between sex and short‐term outcomes of LAAO.MethodsPatients who were hospitalized and underwent LAAO from October 2015 to December 2017 in the National Readmission Database were queried. The primary endpoint of interest was major in‐hospital adverse events. Secondary endpoints included, 30‐day readmission rate, nonhome discharge, and cost of hospitalization. Propensity score matching (1:1) was performed to compare the outcomes among women and men.ResultsA total of 9,281 patients were included in the current analysis [women = 3,659 (39%); men = 5,622 (61%)]. Comparing women to men, women had lower prevalence of diabetes mellitus (30.6% vs 35.7%, p < .01), heart failure (28.6% vs 30.8%, p = .03), vascular disease (55.5% vs 69.6%, p < .01) and renal failure (18.3% vs 21.2%, p < .01), and higher CHA2DS2VASc score (5 [IQR4‐6] vs 4 [IQR3‐6], p < .01). After propensity‐score matching, women had higher rate of major in‐hospital adverse events (2.8% vs 1.9%; p < .01), and nonhome discharges (11.4% vs 6.7%; p < .01). Additionally, 30‐day readmission rate was higher among women (10% vs 8.6%, p = .03).ConclusionAmong hospitalized patients undergoing LAAO, women carry higher risk for major in‐hospital adverse events, nonhome discharge, and 30‐day readmission rates.