Abstract Background Early diagnosis and prompt treatment are crucial in reducing cardiovascular (CVD) burden in the global level, especially in Indonesia with more than a half million CVD death annually. As frontliner, more than 10,000 primary healthcare (PUSKESMAS) spreading around Indonesia are pivotal in delivering CVD emergency care. However, due to the scarcity of healthcare resources, significant disparities exist between guideline recommendations and their implementation in Indonesian primary health care. Purpose Our study aims to describe current cardiovascular emergency care, assess guideline adherence, and identify key factors influencing the trend. Methods This multicentre study was conducted in 40 PUSKESMAS across Indonesia from October to December 2023. Data related to cardiovascular emergencies diagnosis, work-ups, treatment, and outcomes were gathered and then evaluated according to the ESC Guidelines. Recommendations, particularly Class I, were converted into points with respect to diagnostic and treatment domains. Guideline adherence scores were then calculated based on the percentage of accomplished points. Linear regression analysis was employed to identify factors that could explain variations in guideline adherence across all PUSKESMAS. Results 215 CVD emergency patients were reported. The most prevalent diagnosis was hypertensive crisis (n=137; 64%) with ECG done in only 26% of cases and none underwent imaging. Oral amlodipine (59%) and captopril (55%) were mostly used as antihypertensive, with none receiving intravenous. The second most common diagnosis was ACS (n=42; 20%), with ECG performed in only 71% of cases. Among 13 patients with STEMI, 69% only received aspirin, and 46% were given DAPT. Malignant arrhythmia occurred in 26 patients, with none receiving cardioversion. The most used anti-arrhythmic are bisoprolol, propranolol, and atropine. Among 23 cases of acute HF, only 39% received oxygen, while IV furosemide was used in only one case. Cardiac arrest occurred in two patients, both received CPR and epinephrine. In terms of guideline adherence, mean diagnostic score (%) was demonstrated highest in Cardiac Arrest at 100 and the lowest in Hypertensive Crisis and Acute HF at 53, while mean treatment score (%) was highest in Hypertensive Crisis at 86 and lowest in arrhythmia at 25. Linear regression suggests that human resources have a positive and significant association with diagnostic adherence scores (R2: 0.3485, p-value: 0.0450), whereas essential medicine has a strong but non-significant correlation with treatment adherence score (R2: 1.0768, p-value: 0.460). Conclusion This study has demonstrated a huge disparity between the current CVD emergency practices and guidelines in Indonesian primary healthcare. These gaps emphasised the need for improved human resources and essential medicine for primary healthcare along with the implementation of data-driven policy making concerning cardiovascular disease in Indonesia.Cardiovascular Emergency Diagnosis in InCardiovascular Emergency Work-up and Tre