[Variations in the management of patients with acute myocardial infarction in alpine hospitals compared to other French hospitals. Secondary analysis of the USIC 2000 study data]

Early inter-hospital transfer of patients with myocardial infarction without a doctor, paramedic or nurse on board: results from a French regional emergency care network

Background

In France, patients with acute coronary syndromes (ACS) are usually transferred from remote hospitals to percutaneous coronary intervention (PCI) centres in mobile intensive care units (MICUs) with on-board medical staff. They are then returned to the remote hospitals by MICU 48 h after PCI. However, MICU transportation and beds in a PCI centre are in short supply. Therefore, we investigated clinical outcomes among intermediate-risk ACS patients who were transferred in private ambulances without an on-board medic or paramedic; and returned to the remote hospital sooner after PCI.

Methods

In the French Alps, the RESURCOR network manages ‘SCA-Alp’ transfers using strict management protocols in ambulances with trained drivers and automatic external defibrillators, but without heart rhythm monitoring. We conducted an observational retrospective study that assessed outcomes (death and emergency return to the PCI centre within 48 h) in patients transferred using SCA-Alp. Our population comprised stabilized patients with ST-segment elevation myocardial infarction (STEMI) who returned to the remote hospital within 24–48 h of PCI, and uncomplicated patients with non-ST-segment elevation myocardial infarction (NSTEMI) within 24–72 h of symptom onset who come from and returned to (‘round-trip’) the remote hospital on the day of PCI (return < 12 h after PCI).

Results

Between 2010 and 2014, 101 STEMI and 490 NSTEMI patients were transferred using SCA-Alp. No adverse events occurred during transportation and no deaths were reported. Two of 591 patients (0.3% [95% confidence interval 0.1–1.4%]) experienced a stent thrombosis within 48 h of PCI that required a second urgent PCI; both were event free at 6-month follow-up.

Conclusions

Inter-hospital transfer using SCA-Alp is associated with low event rates in intermediate-risk ACS patients, allowing a more streamlined use of medical facilities and freeing-up of beds in PCI centres.

[Reperfusion in ST elevation myocardial infarction. From the guidelines to practice]

BACKGROUND

International guidelines have recommendations for selecting the type of reperfusion (fibrinolysis or angioplasty) in the setting of ST-segment elevation myocardial infarction (STEMI), and suggest that emergency-care networks adapt these recommendations according to the local environment.

AIM

To assess the proportions of STEMI patients treated with fibrinolysis or angioplasty in accordance with regional guidelines.

METHOD

Observational study based on a permanent registry of patients with STEMI of <12h duration in an emergency network in the French North Alps (Isère, Savoie, Haute-Savoie) from January 2009 to December 2012.

RESULTS

The registry included 2620 patients. Reperfusion was given in 2425/2620 (93%) of patients. Reperfusion type was in accordance with recommendations in 1567/2620 (60%) patients. Guideline-recommended fibrinolysis and angioplasty were performed in 47% (656/1385) and 79% (911/1149) respectively, of patients. In multivariable analysis, variables independently associated with guideline-recommended reperfusion were: an age < 65 years (OR 1.60; 95%CI 1.33-1.90), being managed in Haute-Savoie versus Isère or Savoie (OR 1.38; 95%CI 1.12-1.71), an arterial tension < 100mmHg (OR 1.73; 95%CI 1.27-2.35), a cardiogenic shock (OR 0.50; 95%CI 0.30-0.84), a pacemaker or left bundle branch block (OR 0.49; 95%CI 0.28-0.88), and an initial management outside the network (followed by treatment in an interventional centre in the network) (OR 0.62; 95%CI 0.40-0.94). Patients initially treated by mobile intensive care units were more often reperfused in accordance with recommendations when admitted < 3 (versus ≥ 3) h following symptom onset (adjusted OR 2.05; 95% CI 1.61-2.59), while those initially treated by in-hospital emergency units were less often reperfused in accordance with recommendation when treated < 3h following symptom onset (adjusted OR 0.67; 95% CI 0.46-0.97). In-hospital major adverse cardiac events (9.1% vs. 8.5%) and in-hospital mortality (6.4% vs. 5.1%) were not significantly different between patients reperfused in accordance with (versus not) recommendations.

CONCLUSIONS

Forty percent of patients with STEMI were not reperfused with fibrinolysis or angioplasty in accordance with regional guidelines. Characterization of this population should allow us to improve guideline adherence.

Improved outcome of cardiogenic shock at the acute stage of myocardial infarction: a report from the USIK 1995, USIC 2000, and FAST-MI French nationwide registries

AIM

The historical evolution of incidence and outcome of cardiogenic shock (CS) in acute myocardial infarction (AMI) patients is debated. This study compared outcomes in AMI patients from 1995 to 2005, according to the presence of CS.

METHOD AND RESULTS

Three nationwide French registries were conducted 5 years apart, using a similar methodology in consecutive patients admitted over a 1-month period. All 7531 AMI patients presenting ≤48 h of symptom onset were included. The evolution of mortality was compared in the 486 patients with CS vs. those without CS. The incidence of CS tended to decrease over time (6.9% in 1995; 5.7% in 2005, P = 0.07). Thirty-day mortality was considerably higher in CS patients (60.9 vs. 5.2%). Over the 10-year period, mortality decreased for both patients with (70-51%, P = 0.003) and without CS (9-4%, P < 0.001). In CS patients, the use of percutaneous coronary intervention (PCI) increased from 20 to 50% (P < 0.001). Time period was an independent predictor of early mortality in CS patients (OR for death, 2005 vs. 1995 = 0.45; 95% CI: 0.27-0.75, P = 0.005), along with age, diabetes, and smoking status. When added to the multivariate model, PCI was associated with decreased mortality (OR = 0.38; 95% CI: 0.24-0.58, P < 0.001). In propensity-score-matched cohorts, CS patients with PCI had a significantly higher survival.

CONCLUSIONS

Cardiogenic shock remains a clinical concern, although early mortality has decreased. Improved survival is concomitant with a broader use of PCI and recommended medications at the acute stage. Beyond the acute stage, however, 1-year survival has remained unchanged.

Évaluation de la pertinence d'un projet de réseau de santé prenant en charge les urgences neurotraumatiques graves

The aim of the study was to realise a strategic analysis of the feasibility of implementing a health care network for the management of severely head-injured patients in the Alpine region. We conducted face-to-face semi-structured interviews. Manual and computerized analysis of interviews was realized. Textual analysis was performed using the ALCESTE software package. A strategic analysis according to Crozier and Friedberg was performed. Eighteen interviews were realised: 13 physicians, 3 hospital directors and 2 head nurses. We identified 5 types of problems in the management of severely head-injured patients: the lack of human and material resources (33.1% of the variance), problems of communication (12.2%) and surgical competence (24.00), trajectory of care influenced by the concurrence between hospitals (18.0%) and relationship between professionals (12.6%). The stabilisation of process of cooperation was expected by all the professionals and a health care network seemed to be adapted as a coordination tool. Its implementation needed to take into account 3 individual representations: the will for collaboration--cooperation (23.3%), the negotiation (48.4%) and the contracts of the cooperation (28.3%). This study confirms that actors noted the need for improving the management of severely head-injured patients in the Alpine region. However, negotiation to express and solve controversies appears being a precondition to prevent from the blocking of the network by resistances to change.