Impact of ED management on hospital quality measures: the negative case of atrial fibrillation.

OBJECTIVE: Emergency department (ED) cardioversion and discharge of atrial fibrillation (AF) is an evolving treatment. Emergency department cardioversion patients have few comorbidities, and their discharge directly from the ED leads to a sicker in-patient population of AF patients. This study examines whether the quality care markers, hospital charges (HC) and length of stay (LOS), negatively reflect the practice of ED cardioversion. METHODS: Median HC and LOS were determined for 2 different quality assessment reporting models. In a standard model (SM), patients discharged from the ED were not included in any hospital statistics and only admitted, or observation patients were used to calculate the HC and LOS of AF patients. In an inclusive model (IM), patients discharged from the ED were also included in the hospital statistics but given the same LOS as observation patients. Differences across medians were analyzed using Wilcoxon rank sum tests. RESULTS: A total of 312 patients were evaluated for AF over an 18-month period. Of these, 197 (62%) were admitted, 21 (7%) were placed in observation status, and 95 (31%) were discharged from the ED. Median values for LOS were 3 days (interquartile range [IQR], 1-5) for the SM and 1 day (IQR, 0-4) for the IM. Median values for HC were $33062 (IQR, $19267-$60614) for the SM and $20059 (IQR, $4249-$47195) for the IM. CONCLUSION: Emergency department cardioversion selects out a less sick cohort of patients whose removal from a hospital's admission numbers negatively skews quality performance profiles.

The various manifestations of concealed nodofascicular/nodoventricular bypass tracts.

BACKGROUND: The various arrhythmic manifestations of concealed nodofascicular (NF)/nodoventricular (NV) bypass tracts (BPTs) are poorly understood. OBJECTIVE: The purpose of the study was to define diagnostic criteria for supraventricular tachycardias (SVTs) associated with concealed nodal pathways (NPs). METHODS: We reviewed 11 patients with concealed NPs who underwent electrophysiology study and ablation for symptomatic SVT. RESULTS: Of 11 patients 7 (64% women; mean age 54 ± 16 years), NF/NV BPTs were active bystanders during atrioventricular nodal reentrant tachycardia (atypical [n = 4]; typical [n =2]) or participants during orthodromic NF/NV reentrant tachycardia (n = 5). The majority (10 of 11 [91%]) had nodal origin in the slow pathway (SP) and 7 of 11 (64%) presented as long RP SVT. Ablation of the SP targeting the right (n = 10) or left (n = 1) inferior extension eliminated concealed NP-associated SVTs in all patients. CONCLUSION: Concealed NF/NV BPTs are active bystanders equally as common as participants during SVT. They typically insert into the SP and often present as long RP SVT. SP ablation eliminates concealed NF/NV BPT-associated SVTs regardless of the mechanism.

Safety of Same Day Discharge after Atrial Fibrillation Ablation.

INTRODUCTION: It is routine practice to observe patients (pts) overnight in the hospital after atrial fibrillation (AF) ablation. We report single center experience comparing the rate of complications prior to and after implementing a strategy of same day discharge (SDD) following AF ablation. OBJECTIVE: To assess the safety of SDD after AF ablation. METHODS: We reviewed the charts of consecutive pts who underwent AF ablation between Jan 2005 to Dec 2015. Patients who were electively admitted to undergo AF ablation or left atrial flutter ablation (AFL) were included. Patients undergoing only right atrial flutter ablation and in-patients were excluded. In Sept 2012 SDD strategy was implemented. Complication rates were collected up to 3 months post ablation. Major complications were defined as death, pericardial tamponade, CVA, hematoma requiring intervention, pulmonary vein stenosis, diaphragmatic paralysis or atrioesophageal fistula formation. Minor complications were defined as hematoma not requiring intervention and procedure related readmissions. Comparisons were made using an intention to treat analysis. RESULTS: Group A (between Jan 2005 to Feb 2010) included 145 patients (87 males; 60.2 yrs mean age; 103 paroxysmal AF) who were observed overnight. Group B (between Mar 2010 to Dec 2015) included 426 patients (298 males; 62.3 yrs mean age; 247 paroxysmal AF) undergoing ablation following implementation of the SDD strategy. Patients in Group B were contacted by phone next day. In Group B, 51/426 (12%) pts were not discharged same day due to non-ablation related medical care (15/50 pts), ablation related complications (17/50 pts), pt preference (14/50 pts) and late cases (5/50 pts). Rate of total complications was more frequent in Group A (Group A 11.7% vs Group B 4.4%; p 0.026). Major complications happened in 2 pts in Group A and 6 pts in Group B. None of the major complications in Group B happened within 24 hrs of discharge. Only one pt in Group B had pericardial effusion drained 10 days post procedure. Most common minor complication in Group A was hematoma not requiring intervention and Group B was procedure related readmissions. CONCLUSIONS: Our data suggest that SDD after AF or AFL ablation can be safely implemented in majority of pts with similar outcomes as pts observed overnight.

Impact of emergency department management of atrial fibrillation on hospital charges.

INTRODUCTION: Emergency department (ED) cardioversion (EDCV) and discharge of patients with recent onset atrial fibrillation or atrial flutter (AF) has been shown to be a safe and effective management strategy. This study examines the impact of such aggressive ED management on hospital charges. METHODS: A random sample of 300 AF patients were identified from an ED electronic data base and screened for timing of onset of their symptoms. Patients were considered eligible for EDCV if either nursing or physician notes documented an onset of symptoms less than 48 hours prior to ED presentation and the patient was less than 85 years of age. An explicit chart review was then performed to determine patient management and disposition. Cardioversion attempts were defined as ED administration of procainamide, flecainide, propafenone, ibutilide, amiodarone or direct current cardioversion (DCCV). Total hospital charges for each patient were obtained from the hospital billing office. Differences across medians were analyzed utilizing through Wilcoxon rank sum tests and chi square. RESULTS: A total of 51 patients were included in the study. EDCV was attempted on 24 (47%) patients, 22 (92%) were successfully cardioverted to normal sinus rhythm (NSR). An additional 12 (23%) spontaneously converted to NSR. Twenty (91%) of those successfully cardioverted were discharged from the ED along with 4 (33%) of those spontaneously converting. Pharmacologic cardioverson was attempted in six patients and was successful in three (50%), one after failed DCCV attempt. Direct current cardioversion was attempted in 21 (88%) and was successful in 19 (90%), two after failed pharmacologic attempts. Median charges for patients cardioverted and discharged from the ED were $5,460 (IQR $4,677-$6,190). Median charges for admitted patients with no attempt at cardioversion were $23,202 (IQR $19,663-$46,877). Median charges for patients whose final ED rhythm was NSR were $5,641 (IQR $4,638-$12,339) while for those remaining inAF median charges were $30,299 (IQR $20,655 - $69,759). CONCLUSION: ED cardioversion of recent onset AF patients results in significant hospital savings.

Electrophysiological features differentiating the atypical atrioventricular node-dependent long RP supraventricular tachycardias.

BACKGROUND: Diagnosing atypical atrioventricular node-dependent long RP supraventricular tachycardias (SVTs) can be challenging. METHODS AND RESULTS: Nineteen patients with 20 SVTs (atypical atrioventricular nodal reentrant tachycardia without [n=11]/with [n=3] a bystander nodofascicular [NF] accessory pathway, orthodromic reciprocating tachycardia [ORT] using a decremental atrioventricular [permanent form of junctional reciprocating tachycardia; n=4] or NF [NF reentrant tachycardia; n=2]) accessory pathway underwent electrophysiological study. Postpacing interval (PPI)-tachycardia cycle length (TCL), corrected PPI, VA (ventriculoatrial), HA (His-atrial), AH (atrio-His) values, and responses to His-refractory ventricular premature depolarizations were studied. Compared with atrioventricular nodal reentrant tachycardia, ORT patients were younger (42±13 years versus 54±19 years; P=0.036) and were women (5/6 [83%] versus 3/14 [21%]; P=0.036); TCLs were similar (435 ms versus 429 ms; 95% confidence interval, -47.5 to 35.5). PPI-TCL was shorter for ORT (118 ms versus 176 ms; 95% confidence interval, 26.3-89.7) but only 50% had PPI-TCL <115 ms, whereas 5 of 6 (83%) had PPI-TCL <125 ms (sensitivity, 83%; specificity, 100%). Corrected PPI <110 ms, VA <85 ms, and HA <0 ms had equivalent sensitivity (67%) and 100% specificity for ORT. Compared with permanent form of junctional reciprocating tachycardia, NF reentrant tachycardia/atrioventricular nodal reentrant tachycardia had longer AH (29 ms versus 10 ms; 95% confidence interval, 3.03-35.0) or AH(SVT)