The study was conducted in the Internal Medicine Department of the Sylvanus Olympio University Hospital Center in Lomé.

This was a retrospective descriptive study covering the period from January 1, 2018, to December 31, 2020.

2.3.1. Study Population

The study population consisted of patients aged 65 years or older who were hospitalized in the Internal Medicine Department of the Sylvanus Olympio University Hospital Center between January 1, 2018, and December 31, 2020.

2.3.2. Inclusion Criteria

All patients hospitalized in the Internal Medicine Department of the Sylvanus Olympio University Hospital Center between January 1, 2018, and December 31, 2020, who were aged 65 years or older were included in the study.

2.3.3. Exclusion Criteria

Patients under the age of 65 years or whose age is unknown were not included in the study.

We conducted a literature review by examining hospitalization records and patient medical files. The collected data were recorded on a form and a linear list developed for this study. We collected sociodemographic data (age, sex, socioeconomic status) and clinical data (personal history, diagnoses, length of hospital stay, and outcome).

We used Microsoft Word for text entry and Microsoft Excel for compilation. For analysis, we used Epi Info version 7.2.1.0. The results are presented in tables and graphs with values representing absolute and relative frequencies, means, ratios, and proportions.

3.1.1. Frequency

During the study period, 3,026 patients were hospitalized in the department, of whom 433 were 65 years of age or older, representing a frequency of 14.31%.

3.1.2. Age and Sex of Patients

The mean age of the patients was 74.43 ± 8.54 years, with a range of 65 to 115 years.

The male-to-female ratio was 1.03.

3.2.1. Medical History

Elderly patients with a medical history represented 81.52% of cases, with an average of 1.36 medical histories per patient. The most common medical history was hypertension in 44.57% of cases and diabetes in 26.64% of cases (Table 1).

Table 1. Distribution of patients according to their medical histories.

3.2.2. Diagnoses

Neurological pathology was found in 28.40% of cases, and endocrine and metabolic pathology in 24.94% of cases (Table 2).

Table 2. Distribution of patients according to the type of pathology.

3.3.1. Length of Hospital Stay

The average length of hospital stay was 10.21 ± 7.56 days, with a range from 1 to 41 days.

3.3.2. Hospital Outcome

Death during hospitalization was recorded in 32.79% of cases (Figure 1).

Figure 1. Distribution of elderly patients according to hospitalization outcomes.

3.3.3. Mortality

Death was due to neurological pathology in 44.37% of cases and to urinary pathology in 23.24% of cases (Table 3).

Table 3. Distribution of deaths according to cause.

3.3.4. Functional Status at Discharge

Among the patients declared cured at the end of hospitalization, 47.71% presented a loss of autonomy according to the Katz scale (Figure 2).

Figure 2. Distribution of patients according to functional status at discharge.

The proportion of elderly patients hospitalized in internal medicine was 14.31%. This appears high in a country where the proportion of people aged 65 and over in the general population is 3.53% [9]; this reflects higher morbidity among seniors and can be explained by the frequency of chronic diseases with advancing age, as well as the frailty exacerbated by the progressive decline of most functions with age.

Regarding medical history, 81.52% of patients had a history of illness upon admission, predominantly hypertension (44.57%) and diabetes (26.64%), with an average of 1.36 pre-existing conditions per patient. In the series by Sanjurjo et al. [10] in Spain, an average of 3.5 pre-existing conditions per patient was noted, and the history was also dominated by hypertension (62.5%) and diabetes (55.1%). Among the conditions found in patients, neurological pathology was the most frequent (28.40%), followed by endocrine and metabolic pathology (24.94% of cases). In the data reported by Sanjurjo et al. [10] in Spain and by Mazière et al. [11] in France, the predominant pathologies were respiratory (33% and 14.7% respectively) and cardiovascular (21% and 22.8% respectively).

Patient outcomes were marked by death in 32.79% of cases and loss of autonomy in 47.71% of patients declared recovered. Hospitalization of elderly individuals often exacerbates their frailty by further impairing their autonomy. Covinsky et al. [12], in a study conducted in the United States on subjects aged 70 and over, reported a deterioration in functional status in 35% of patients upon hospital discharge. Geriatric care for these elderly patients can help reduce the loss of autonomy upon hospital discharge, as demonstrated by Cohen et al. [13] in a study conducted in the United States. The benefit is greater when geriatric care is provided upstream for preventive purposes in order to reduce the number of hospitalizations, especially emergency hospitalizations, which are associated with a higher rate of functional decline [14].

The main pathologies leading to death were neurological (44.36%), urinary (23.24%), and digestive (14.79%). Cortés-Sierra et al. [15] in Colombia reported a mortality rate of 8.3% among adult patients hospitalized in an internal medicine ward. The high mortality rate in our series appears to reflect a higher mortality rate among the elderly than in the general adult population, which may be explained by the more or less pronounced functional impairments and the multiple comorbidities often experienced by older adults. This rate also appears to be higher than that reported by Sanjurjo et al. [16] in Spain (16.6%) among seniors hospitalized in an internal medicine ward. Insufficient technical resources in our setting, coupled with delays in diagnosis and treatment, and patients’ difficulties in coping with healthcare expenses, may be contributing factors to this mortality.

The absence of geriatric care can also contribute to a higher mortality rate: studies have shown that good geriatric care, especially for preventive purposes, helps reduce hospitalizations and thus the number of deaths among older adults [15][17]. According to the series by Sanjurjo et al. [16], the main causes of death were respiratory tract infections (43.8%) and heart failure (13.3%). Rossetto et al. [17] also reported that the main causes of death were cardiac (10.8%) and infectious pulmonary diseases (6.9%).

The main limitation of this study is its single-center, retrospective design. This explains the lack of certain data. However, the topic is relevant, and the results will help prevent certain comorbidities and limit the loss of autonomy in hospitalized patients.