Adlam D, Tweet MS, Gulati R, Kotecha D, Rao P, Moss AJ, Hayes SN Spontaneous Coronary Artery Dissection: Pitfalls of Angiographic Diagnosis and an Approach to Ambiguous Cases. JACC Cardiovasc Interv. 2021 Aug 23;14(16):1743-1756. doi: 10.1016/j.jcin.2021.06.027.
Benson JC, Lehman VT, Verdoorn JT, Shlapak DP, Hayes SN, Tweet MS Prevalence of Cervical Artery Abnormalities on CTA in Patients with Spontaneous Coronary Artery Dissection: Fibromuscular Dysplasia, Dissection, Aneurysm, and Tortuosity. AJNR Am J Neuroradiol. 2021 Aug;42(8):1497-1502. doi: 10.3174/ajnr.A7151. Epub 2021 May 13.
Hayes SN Spontaneous coronary artery dissection (SCAD): new insights into this not-so-rare condition. Tex Heart Inst J. 2014 Jun 1;41(3):295-8. doi: 10.14503/THIJ-14-4089. eCollection 2014 Jun. No abstract available.
Johnson AK, Hayes SN, Sawchuk C, Johnson MP, Best PJ, Gulati R, Tweet MS Analysis of Posttraumatic Stress Disorder, Depression, Anxiety, and Resiliency Within the Unique Population of Spontaneous Coronary Artery Dissection Survivors. J Am Heart Assoc. 2020 May 5;9(9):e014372. doi: 10.1161/JAHA.119.014372. Epub 2020 Apr 28.
Johnson AK, Tweet MS, Rouleau SG, Sadosty AT, Hayes SN, Raukar NP The presentation of spontaneous coronary artery dissection in the emergency department: Signs and symptoms in an unsuspecting population. Acad Emerg Med. 2022 Apr;29(4):423-428. doi: 10.1111/acem.14426. Epub 2021 Dec 26.
Tan NY, Hayes SN, Young PM, Gulati R, Tweet MS Usefulness of Cardiac Magnetic Resonance Imaging in Patients With Acute Spontaneous Coronary Artery Dissection. Am J Cardiol. 2018 Nov 15;122(10):1624-1629. doi: 10.1016/j.amjcard.2018.07.043. Epub 2018 Aug 20.
Tweet MS, Akhtar NJ, Hayes SN, Best PJ, Gulati R, Araoz PA Spontaneous coronary artery dissection: Acute findings on coronary computed tomography angiography. Eur Heart J Acute Cardiovasc Care. 2019 Aug;8(5):467-475. doi: 10.1177/2048872617753799. Epub 2018 Jan 29.
Tweet MS, Codsi E, Best PJM, Gulati R, Rose CH, Hayes SN Menstrual Chest Pain in Women With History of Spontaneous Coronary Artery Dissection. J Am Coll Cardiol. 2017 Oct 31;70(18):2308-2309. doi: 10.1016/j.jacc.2017.08.071. No abstract available.
Tweet MS, Gulati R, Aase LA, Hayes SN Spontaneous coronary artery dissection: a disease-specific, social networking community-initiated study. Mayo Clin Proc. 2011 Sep;86(9):845-50. doi: 10.4065/mcp.2011.0312.
Tweet MS, Gulati R, Hayes SN Spontaneous Coronary Artery Dissection. Curr Cardiol Rep. 2016 Jul;18(7):60. doi: 10.1007/s11886-016-0737-6.
Tweet MS, Gulati R, Hayes SN What Clinicians Should Know Alphabout Spontaneous Coronary Artery Dissection. Mayo Clin Proc. 2015 Aug;90(8):1125-30. doi: 10.1016/j.mayocp.2015.05.010.
Tweet MS, Hayes SN, Gulati R, Rose CH, Best PJ Pregnancy after spontaneous coronary artery dissection: a case series. Ann Intern Med. 2015 Apr 21;162(8):598-600. doi: 10.7326/L14-0446. No abstract available.
Tweet MS, Young KA, Best PJM, Hyun M, Gulati R, Rose CH, Hayes SN Association of Pregnancy With Recurrence of Spontaneous Coronary Artery Dissection Among Women With Prior Coronary Artery Dissection. JAMA Netw Open. 2020 Sep 1;3(9):e2018170. doi: 10.1001/jamanetworkopen.2020.18170.
Interventional studies are often prospective and are specifically tailored to evaluate direct impacts of treatment or preventive measures on disease.
Observational studies are often retrospective and are used to assess potential causation in exposure-outcome relationships and therefore influence preventive methods.
Expanded access is a means by which manufacturers make investigational new drugs available, under certain circumstances, to treat a patient(s) with a serious disease or condition who cannot participate in a controlled clinical trial.
Clinical trials are conducted in a series of steps, called phases - each phase is designed to answer a separate research question.
Phase 1: Researchers test a new drug or treatment in a small group of people for the first time to evaluate its safety, determine a safe dosage range, and identify side effects.
Phase 2: The drug or treatment is given to a larger group of people to see if it is effective and to further evaluate its safety.
Phase 3: The drug or treatment is given to large groups of people to confirm its effectiveness, monitor side effects, compare it to commonly used treatments, and collect information that will allow the drug or treatment to be used safely.
Phase 4: Studies are done after the drug or treatment has been marketed to gather information on the drug's effect in various populations and any side effects associated with long-term use.