Objective: To describe the profile of patients admitted to the emergency department’s shock unit of the Niamey National Hospital (HNN). Patients and Methods: This was a prospective descriptive study conducted over a 3-month period, from December 15, 2023, to March 15, 2024. All patients admitted to the resuscitation units of the medical and surgical emergency departments were included. The variables studied were: age, sex, occupation, origin, mode and reason for admission, clinical and paraclinical data, management, and outcome. Data were entered and analyzed using Microsoft Office 2016 and Sphinx v5 software. Statistical tests were considered significant for any p-value <0.05. Results: Three thousand four hundred and twenty (3420) patients were triaged in the emergency department, of whom 100 were admitted to the resuscitation unit, representing an overall frequency of 2.92%. Males accounted for 72% (n=72) of cases, with a male-to-female ratio of 2.57. The mean age of our patients was 34.23 years, ranging from 2 to 94 years. Hypertension was the predominant comorbidity in 32% (n=32) of cases. Stroke was the most common diagnosis, accounting for 34.48% (n=20) of cases. Among patients admitted to the surgical resuscitation unit, 52.38% (n=22) had multiple traumas. Oxygen therapy was administered to all patients. Ninety-eight percent (n=98) of patients received crystalloid fluid resuscitation. During our study, 54.76% of patients underwent surgical intervention. Thirty percent (n=30) of patients were transferred to a short-stay unit. The length of hospital stay was less than 48 hours in 53.00% of cases. Conclusion: The resuscitation room plays a crucial rôle in an emergency department, as it is the place where life-threatening or potentially life-threatening situations are managed. To optimize patient care, it must be well-equipped and staffed with trained personnel.