Secondary preventive medication persistence and adherence 1 year after stroke.

OBJECTIVE: Data on long-term use of secondary prevention medications following stroke are limited. The Adherence eValuation After Ischemic stroke-Longitudinal (AVAIL) Registry assessed patient, provider, and system-level factors influencing continuation of prevention medications for 1 year following stroke hospitalization discharge. METHODS: Patients with ischemic stroke or TIA discharged from 106 hospitals participating in the American Heart Association Get With The Guidelines-Stroke program were surveyed to determine their use of warfarin, antiplatelet, antihypertensive, lipid-lowering, and diabetes medications from discharge to 12 months. Reasons for stopping medications were ascertained. Persistence was defined as continuation of all secondary preventive medications prescribed at hospital discharge, and adherence as continuation of prescribed medications except those stopped according to health care provider instructions. RESULTS: Of the 2,880 patients enrolled in AVAIL, 88.4% (2,457 patients) completed 1-year interviews. Of these, 65.9% were regimen persistent and 86.6% were regimen adherent. Independent predictors of 1-year medication persistence included fewer medications prescribed at discharge, having an adequate income, having an appointment with a primary care provider, and greater understanding of why medications were prescribed and their side effects. Independent predictors of adherence were similar to those for persistence. CONCLUSIONS: Although up to one-third of stroke patients discontinued one or more secondary prevention medications within 1 year of hospital discharge, self-discontinuation of these medications is uncommon. Several potentially modifiable patient, provider, and system-level factors associated with persistence and adherence may be targets for future interventions.

Secondary prevention in a cardiology group practice and hospital setting after a heart-care initiative.

The American Heart Association (AHA) Consensus Panel Statement for Preventing Heart Attack and Death in Patients with Coronary Disease provides recommendations for the secondary prevention of heart disease in at-risk patients. Blackstone Cardiology Associates of Pawtucket, Rhode Island, undertook an initiative in their practice implementing secondary-prevention guidelines in patients with coronary artery disease. This retrospective study evaluates practice patterns for the management of hyperlipidemia for a cardiology group in an ambulatory and hospital setting after the institution of a physician-supervised, nurse-based disease management program. Practice patterns in patients with established coronary heart disease treated in a lipid center compared with non-lipid-center settings were evaluated. Parameters evaluated included documenting low-density lipoprotein (LDL) cholesterol, presence of lipid-lowering therapy, and achieving the National Cholesterol Education Program II (NCEP II) goal of LDL-cholesterol levels < or =100 mg/dL in patients with preexisting coronary artery disease. A total of 352 patients met inclusion criteria in the lipid-center setting and were compared with 289 non-lipid-center consecutively chosen patients. Age and gender differences were also evaluated. Inpatient medical records from a 254-bed Brown University-affiliated teaching hospital were also evaluated for lipid profile, achievement of NCEP II goal, and use of lipid-lowering medication on admission and discharge. The most recent LDL-cholesterol values of patients followed in the lipid-center and in the non-lipid-center setting of the Blackstone Cardiology Associates were compared. Blackstone Cardiology Associates consists of 4 cardiologists and 4 advanced-practice nurses. Achievement of LDL-cholesterol goal was higher in both the lipid-center and non-lipid-center settings compared with baseline. A smaller percentage of patients at goal in the lipid setting is likely due to referral bias resulting in patients with more difficult-to-manage mixed dyslipidemias and behavior-management issues ending up in the lipid center. There were no apparent sex differences at goal, and more elderly (age > or =65 years) achieved goal in the lipid clinic center. In the non-lipid-center setting, more males were at goal and had a lower mean LDL-cholesterol level.

Comparison of dobutamine and exercise using technetium-99m sestamibi imaging for the evaluation of coronary artery disease.

Studies using dobutamine thallium-201 myocardial perfusion imaging have suggested a high sensitivity and specificity for the detection of coronary artery disease. However, few data are available comparing dobutamine with exercise stress for the detection and localization of perfusion defects. This study compared the effects of dobutamine and exercise stress using technetium-99m sestamibi single-photon emission computed tomographic imaging in the same patients in a prospective crossover trial. Twenty-four patients with a high likelihood of coronary artery disease underwent tomographic myocardial imaging at rest, after symptom-limited treadmill exercise, and after intravenous dobutamine (maximum 30 micrograms/kg/min). Tomograms of the left ventricle were divided into 20 segments and were interpreted without knowledge of patient identity or stress protocol. Dobutamine was well tolerated by all patients. Segment-by-segment concordance between exercise and dobutamine images was highly significant (kappa = 0.56, p < 0.0001). Global first-order agreement (normal vs abnormal) between exercise and dobutamine studies was 96% (kappa = 0.65, p = 0.02); global second-order agreement (normal vs fixed vs ischemic defect) was 88% (kappa = 0.45, p = 0.02). Regional first- and second-order agreement were 96 and 93%, respectively (p < 0.001 for both). Twenty patients underwent coronary angiography. Comparisons between exercise and angiography and between dobutamine and angiography were similar for both global agreement (95 vs 100%, p = NS) and regional agreement (77 vs 72%, p = NS).(ABSTRACT TRUNCATED AT 250 WORDS)

Two-dimensional echocardiographic detection of preclinical aortic root abnormalities in rheumatoid variant diseases.

Two-dimensional echocardiographic findings of subaortic fibrous ridging, aortic leaflet thickening, and aortic root dilatation and thickening are described in a group of 36 patients with rheumatoid variant diseases. The group consisted of 25 patients with ankylosing spondylitis, nine patients with Reiter's syndrome, and two patients with inflammatory bowel disease and spondylitis. No patient had clinical or laboratory evidence of aortic regurgitation or heart block. Subaortic fibrous ridging or marked leaflet thickening was noted in 11 of 36 patients; in contrast, no such changes were found in an age-matched control group of 29 men. The subgroup of patients with subaortic fibrous ridging or leaflet thickening (11 patients) had significantly longer disease duration (28.1 versus 17.7 years) and higher incidence of aortic root echo-density (82 versus 36 percent) than the remaining patients. It is concluded that a significant portion of patients with ankylosing spondylitis or Reiter's syndrome have echocardiographic evidence of aortic root involvement prior to the clinical onset of aortic regurgitation.

Thallium-201 myocardial imaging in patients on chronic hemodialysis.

10 long-term hemodialysis patients had immediate and redistribution thallium-201 myocardial imaging performed after a course of hemodialysis. Subjects had EKGs done on the same day before and after dialysis. 3 of the 10 subjects had resting thallium-201 myocardial imaging obtained on non-dialysis days. 60% of the electrocardiograms showed changes with dialysis. All 13 thallium studies were abnormal, showing multiple transient filling defects at rest. Most subjects had permanent filling defects as well. It is concluded that hemodialysis patients have a high frequency of abnormal thallium-201 myocardial images at rest. The cause of these abnormal studies is uncertain.

Chest pain as a presentation of reactive hypoglycemia.

Reported herein is a patient with multiple hospital admissions for atypical chest pain syndrome who underwent extensive noninvasive and invasive cardiologic testing to exclude ischemic heart disease as an etiology. During one episode of chest pain, the patient was found to have hypoglycemia with a blood sugar level of 46 ml/dl. Two subsequent oral glucose tolerance tests reproduced chest pain during hypoglycemia with values of 47 ml/dl and 27 ml/dl. The patient had previously had no significant clinical response to typical antianginal medications. Following evidence of concurrent hypoglycemia, the chest pain syndrome has significantly decreased with the patient on a low carbohydrate diet.

Platypnea syndrome after left pneumonectomy.

Contrast two-dimensional echocardiography (2DE) was used to demonstrate right-to-left shunting at the atrial level in a 49-year-old man with platypnea and orthostatic cyanosis which developed after a left pneumonectomy. This patient's systemic arterial saturation decreased with phlebotomy and increased with volume administration. This syndrome disappeared after repair of a previously unrecognized atrial septal defect. Right-to-left shunting in atrial septal defect is usually explained by a change in the relationship of right and left ventricular compliance with the right ventricle becoming less compliant (ie, stiffer) than the left. Pneumonectomy can affect atrial emptying either directly by mechanical means or indirectly by changing relationships in ventricular compliance. Contrast 2DE played key role in initially establishing the etiology of cyanosis in this complicated case.