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      Cannabis Use Disorder in Young Adults with Acute Myocardial Infarction: Trend Inpatient Study from 2010 to 2014 in the United States


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          This study determines the trend of acute myocardial infarction (AMI) in cannabis users. Demographic characteristics, hospitalization outcomes, and utilization of primary treatment modalities were evaluated in AMI inpatient population.


          The study used data from the nationwide inpatient sample (NIS) for the years 2010-2014. We identified patients with AMI as the primary diagnosis ( N = 379,843) and patients with cannabis use disorder as the secondary diagnosis. We used Pearson’s chi-square ( χ2) test and independent sample t-test for measuring the categorical and continuous data, respectively.


          Inpatient admissions for AMI among cannabis users increased by 32% ( P = 0.001). The overall mean age of cannabis users with AMI (41 years) remained stable with no significant differences observed across age groups. AMI was predominant in male cannabis users (79.1%), and there was a 38.3% increase in the prevalence in female cannabis users over five years ( P < 0.001). About one-third of the cannabis users with AMI were covered by medicaid with a 70.5% pike (21% in 2010 to 37.5% in 2014; P < 0.001). There was a strong linear trend in nonelective admissions for AMI in cannabis users ( P = 0.003) along with a moderate-to-severe morbidity ( P = 0.001). Mean length of inpatient stay had a decreasing linear trend ( P = 0.003), whereas hospitalization costs were increasing ( P = 0.024), averaging $65,879 per admission for AMI. Cannabis users had a strong linear increasing trend ( P = 0.007), with a 60% increase in in-hospital mortality (1.0% in 2010 to 1.6% in 2014).


          Due to the risk of AMI, as seen in numerous case reports, the trend of emergency admission and severe morbidity due to AMI in cannabis users is also increasing. Also, cannabis users have a higher healthcare cost to manage AMI, yet the in-hospital mortality has risen tremendously over the last few years. It is imperative to know that chronic cannabis worsens the outcomes in AMI patients, and more clinical studies are needed to show the association of episodic use in cannabis abusers and AMI.

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          Triggering myocardial infarction by marijuana.

          Marijuana use in the age group prone to coronary artery disease is higher than it was in the past. Smoking marijuana is known to have hemodynamic consequences, including a dose-dependent increase in heart rate, supine hypertension, and postural hypotension; however, whether it can trigger the onset of myocardial infarction is unknown. In the Determinants of Myocardial Infarction Onset Study, we interviewed 3882 patients (1258 women) with acute myocardial infarction an average of 4 days after infarction onset. We used the case-crossover study design to compare the reported use of marijuana in the hour preceding symptoms of myocardial infarction onset to its expected frequency using self-matched control data. Of the 3882 patients, 124 (3.2%) reported smoking marijuana in the prior year, 37 within 24 hours and 9 within 1 hour of myocardial infarction symptoms. Compared with nonusers, marijuana users were more likely to be men (94% versus 67%, P<0.001), current cigarette smokers (68% versus 32%, P<0.001), and obese (43% versus 32%, P=0.008). They were less likely to have a history of angina (12% versus 25%, P<0.001) or hypertension (30% versus 44%, P=0.002). The risk of myocardial infarction onset was elevated 4.8 times over baseline (95% confidence interval, 2.4 to 9.5) in the 60 minutes after marijuana use. The elevated risk rapidly decreased thereafter. Smoking marijuana is a rare trigger of acute myocardial infarction. Understanding the mechanism through which marijuana causes infarction may provide insight into the triggering of myocardial infarction by this and other, more common stressors.
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            Role of cannabis in cardiovascular disorders.

            The growing popularity of medical and recreational consumption of cannabis, especially among the youth, raises immediate concerns regarding its safety and long-terms effects. The cardiovascular effects of cannabis are not well known. Cannabis consumption has been shown to cause arrhythmia including ventricular tachycardia, and potentially sudden death, and to increase the risk of myocardial infarction (MI). These effects appear to be compounded by cigarette smoking and precipitated by excessive physical activity, especially during the first few hours of consumption. Cannabinoids, or the active compounds of cannabis, have been shown to have heterogeneous effects on central and peripheral circulation. Acute cannabis consumption has been shown to cause an increase in blood pressure, specifically systolic blood pressure (SBP), and orthostatic hypotension. Cannabis use has been reported to increase risk of ischemic stroke, particularly in the healthy young patients. The endocannabinoid system (ECS) is currently considered as a promising therapeutic target in the management of several disease conditions. Synthetic cannabinoids (SCs) are being increasingly investigated for their therapeutic effects; however, the value of their benefits over possible complications remains controversial. Despite the considerable research in this field, the benefits of cannabis and its synthetic derivatives remains questionable even in the face of an increasingly tolerating attitude towards recreational consumption and promotion of the therapeutic complications. More efforts are needed to increase awareness among the public, especially youth, about the cardiovascular risks associated with cannabis use and to disseminate the accumulated knowledge regarding its ill effects.
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              Marijuana as a trigger of cardiovascular events: speculation or scientific certainty?

              Marijuana is the most widely used illicit substance in the United States. Cardiovascular complications in association with marijuana use have been reported during the past three decades. In view of the elevated public interest in this drug's role in pharmacotherapy in the recent years and the aging population of long-term marijuana users from the late 1960s, encounters with marijuana-related cardiovascular adversities may be silently on the rise. The purpose of this article is to increase awareness of the potential of marijuana to lead to cardiovascular disease. Here, we will discuss the physiologic effects of marijuana and include a comprehensive review of the studies and case reports that provide supportive evidence for marijuana as a trigger of adverse cardiovascular events, including tachyarrhythmias, acute coronary syndrome, vascular complications, and even congenital heart defects.

                Author and article information

                Cureus (Palo Alto (CA) )
                31 August 2018
                August 2018
                : 10
                : 8
                [1 ] Psychiatry, Griffin Memorial Hospital, Norman, USA
                [2 ] Medicine, Garden City Hospital, Garden City, USA
                [3 ] Epidemiology/Human Genetics and Environmental Sciences, The University of Texas School of Public Health, Houston, USA
                [4 ] Infectious Disease, Clinical Infectious Disease Specialist, Las Vegas, USA
                [5 ] Psychiatry, Magnolia Medical Clinic, Norcross, USA
                [6 ] Internal Medicine, Blake Medical Center, Bradenton, USA
                Author notes
                Rikinkumar S. Patel rpatel_09@ 123456arcadia.edu
                Copyright © 2018, Patel et al.

                This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

                Epidemiology/Public Health


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