Peter M. Farrehi

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OBJECTIVE To determine factors contributing to the relatively high frequency and variability (10% to 30%) of finding no significant coronary disease by coronary angiography in patients with chest pain. STUDY DESIGN Retrospective, comparative analysis of practice patterns at 3 southeastern Michigan hospitals and a composite sample from New York State. (More)
BACKGROUND Platelet-rich arterial thrombi are resistant to lysis by plasminogen activators. However, the mechanisms underlying thrombolysis resistance are poorly defined. Plasminogen activator inhibitor-1 (PAI-1), which is present in plasma, platelets, and vascular endothelium, may be an important determinant of the resistance of arterial thrombi to lysis.(More)
BACKGROUND Plasminogen activator inhibitor type 1 (PAI-1) inhibits neointima formation after vascular injury. Hyperlipidemia modulates the expression of multiple genes, however, and the effects of PAI-1 on the arterial response to injury under hyperlipidemic conditions are unknown. The purpose of this study was to examine the impact of PAI-1 on intimal(More)
The number of patients with implantable electronic devices (IEDs) is growing as indications for a myriad of cardiac and neurological disorders that cannot be managed using medication alone expand. These devices include gastric and cardiac pacemakers, implantable cardioverter defibrillators, cochlear implants, and a range of stimulators of the deep brain,(More)
Acute myocardial infarction in previously healthy children is rare in the absence of congenital anomalies. We describe two cases of acute anterior myocardial infarction in adolescent males with no congenital heart disease, without prior history of or risk factors for coronary heart disease, and with no history of drug abuse. These cases illustrate that(More)
Syncope is a sudden and temporary loss of consciousness not caused by trauma or seizures. Patients age 65 and older are at elevated risk of syncope-related falls and sudden cardiac death. Cardiovascular causes are generally electrical (ie, arrhythmias) or mechanical (obstruction of central circulation at a cardiac valve or major vascular structure).(More)
Background: Radiographic contrast agents inhibit fibrinolysis, although by poorly defined pathways. The purpose of this study was to define specific mechanisms by which contrast agents inhibit clot lysis. Methods and Results: Diatrizoate (high osmolar ionic agent), ioxaglate (low osmolar ionic), and ioversol (nonionic) were studied in vitro. Diatrizoate(More)
Recurrent atrial fibrillation (AF) after successful cardioversion can be predicted by obstructive sleep apnea (OSA) diagnosed by polysomnography. However, it is not known whether the validated STOP-BANG questionnaire can predict AF recurrence after radiofrequency ablation (RFA). Our objective is to determine the prevalence of unrecognized OSA in patients(More)
To cite: Farrehi PM, Nallamothu BK, Navvab M. BMJ Qual Saf Published Online First: [please include Day Month Year] doi:10.1136/bmjqs-2015004205 Noise has been identified as a major stressor in hospitals, 2 with ambient noise frequently exceeding recommended levels set by the WHO and reportedly as high as alarm clocks. 5 Although hospitals frequently attempt(More)
BACKGROUND Patients are commonly provided tools in the hospital to overcome poor sleep. Whether education on use of sleep tools can impact health outcomes from a patient perspective is not known. METHODS We recruited 120 adults admitted to a nonintensive care unit cardiac-monitored floor. All patients received a set of sleep-enhancing tools (eye mask, ear(More)
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