The effect of resilience training with mHealth application based on micro-learning method on the stress and anxiety of nurses working in intensive care units: a randomized controlled trial

INTRODUCTION

Nurses in intensive care units (ICUs) face high stress and anxiety, impacting their well-being and productivity. Addressing this, this study evaluated the impact of resilience training via a mHealth application based on micro-learning on ICU nurses' stress and anxiety levels.

MATERIALS AND METHODS

This study, a single-blind randomized controlled trial conducted in 2022-23, involved sixty ICU nurses from two Tehran hospitals. Nurses were chosen through purposive sampling and divided into intervention and control groups by simple randomization. The intervention group was taught resilience via an educational mHealth application based on micro-learning, with data collected using the anxiety and stress subscales of DASS-21.

RESULTS

Before the intervention, there were no significant differences in stress and anxiety scores between the intervention and control groups (P > 0.05). Upon utilizing the mHealth application, the intervention group exhibited significant reductions in stress, from 10.77 ± 3.33 to 9.00 ± 1.66 (P = 0.001), and in anxiety, from 9.43 ± 3.35 to 7.93 ± 0.98 (P < 0.001). In contrast, the control group experienced a slight increase in stress levels, from 10.10 ± 2.19 to 10.73 ± 2.15 (P = 0.002), and in anxiety levels, from 9.10 ± 1.63 to 10.23 ± 1.65 (P < 0.0001).

CONCLUSIONS

The micro-learning-based mHealth application for resilience training significantly reduced ICU nurses' stress and anxiety, recommending its adoption as an innovative educational method.

TRIAL REGISTRATION

The study has been registered in the Iranian Registry of Clinical Trials (No. IRCT20221225056916N1, Date: 04/29/2023).

Investigation of the effect of Jacobson's relaxation technique on the fatigue of family caregivers of hemodialysis patients: a single-blinded randomized controlled trial

BACKGROUND

Caring for hemodialysis patients could be a heavy burden on family caregivers, causing them to become fatigued and decrease their quality of life. This study aimed to investigate whether Jacobson's relaxation can help alleviate the fatigue of family caregivers of hemodialysis patients.

METHODS

This randomized controlled trial was conducted in 2021. Sixty-six family caregivers of hemodialysis patients were recruited by convenience sampling from a referral hospital in Tehran, Iran, and assigned randomly by coin toss to two groups of experimental (n = 32) and control (n = 34). Caregivers in the experimental group performed Jacobson's relaxation three times a week, each time for 30-45 min, for 30 days. The score and severity of fatigue before, 2 weeks after, and 1 month after the intervention were measured with the Fatigue Severity Scale. Data analysis was performed in the statistics software SPSS using descriptive statistics (frequency, percentage, mean, and standard deviation) and analytic statistics (Independent Samples t-test, Mann-Whitney U test, Chi-Square test, Fisher's exact test, and RM-ANOVA test). The significance level was less than 0.05.

RESULTS

The fatigue scores of the experimental and control groups were not significantly different before the intervention (4.42 ± 0.42 vs. 4.38 ± 0.42, P = 0.696). However, the experimental group had significantly lower fatigue scores than the control group 2 weeks after the intervention (4.11 ± 0.63 vs. 4.39 ± 0.42, P = 0.036) and 1 month after the intervention (3.5 ± 0.71 vs. 4.4 ± 0.44, P = 0.001). The results also showed a significant drop in the fatigue score of the experimental group after the intervention (P < 0.0001), but no such change in the control group (P = 0.662).

CONCLUSION

Jacobson's relaxation technique was effective in alleviating the fatigue of family caregivers of hemodialysis patients. Nurses are therefore recommended to promote the technique as a safe and easy method of fatigue management for family caregivers.

A systematic review of the measurement properties of self-care scales in nurses

BACKGROUND

Self-care is a necessary measure against occupational injuries of nurses and improves nursing performance at the bedside. Nurses have different scales to measure self-care, and researchers are confused about choosing valid and reliable scales. This systematic review aimed to evaluate the measurement properties of self-care scales in nurses to identify the best available scales.

METHODS

Four databases (PubMed, Web of Science, SCOPUS, and ProQuest) were systematically searched, with no date limiters, until 9 Jun 2023. A manual search was performed with Google Scholar and the reference list of articles to complete the search. Studies aiming to develop or determine the measurement properties of self-care in nurses were included. Based on Consensus-Based Standards for the Selection of Health Measurement Instruments, the methodological quality of the studies was determined, and the result of each study on a measurement property was rated (sufficient, insufficient, or indeterminate). The quality of the evidence was graded using a modified Grading of Recommendations Assessment, Development, and Evaluation approach (high, moderate, low, or very low). These processes were used to make recommendations and identify the best scale to assess self-care in nurses.

RESULTS

Out of 8601 articles, six articles with five different scales were included. Only internal consistency was reported across all scales. Criterion validity, measurement error, responsiveness, feasibility, and interpretability, were not reported in any of them. Content validity was reported only in two studies with inconsistent results and low-quality evidence. None of the scales had methodological quality with a rating of very good and sufficient high-quality evidence for all measurement properties.

CONCLUSIONS

None of the scales is strongly recommended to measure self-care in nurses. Only the Professional self-care scale is temporarily recommended until their quality is assessed in future studies. Considering that the content of the examined scales does not meet all the professional self-care needs of nurses, designing a valid, reliable, and specialized scale for nurses is needed.

Comparing the effects of mHealth app use and face-to-face training on the clinical and laboratory parameters of dietary and fluid intake adherence in hemodialysis patients: a randomized clinical trial

BACKGROUND

Numerous factors are likely to result in poor treatment adherence, which is one of the important factors contributing to increased complications and the low efficacy of hemodialysis (HD), particularly inadequate knowledge of patients. This study aimed to compare the effects of a mobile health (mHealth) app (the Di Care app) use and face-to-face training on the clinical and laboratory parameters of dietary and fluid intake adherence in patients undergoing HD.

METHODS

This single-blinded, two-stage/two-group randomized clinical trial was fulfilled in 2021-22 in Iran. Seventy HD patients were recruited, using the convenience sampling method, and were then randomized into two groups: mHealth (n = 35) and face-to-face training (n = 35). ​ The patients in both groups received the same educational materials via the Di Care app and face-to-face training for one month. Before and 12 weeks after the intervention, the mean interdialytic weight gain (IDWG), potassium (K), phosphorus (P), total cholesterol (TC), triglyceride (TG), albumin (AL), and ferritin (FER) levels were measured and compared. The data were analyzed using the SPSS via descriptive statistics (mean, SD, frequency, and percentage) and analytical tests (independent-samples t-test, paired-samples t-test, Wilcoxon signed-rank test, Mann-Whitney U test, Chi-square test, and Fisher's exact test).

RESULTS

​Prior to the intervention, the mean IDWG and the K, P, TC, TG, AL, and FER levels, were not significantly different in both groups (p > 0.05). The mean IDWG (p < 0.0001), and the K (p = 0.001), P (p = 0.003), TC/TG (p < 0.0001), and FER (p = 0.038) levels in the HD patients in the mHealth group decreased. ​As well, the mean IDWG (p < 0.0001), and the K (p < 0.0001) and AL (p < 0.0001) levels showed a descending trend in the face-to-face group. The fall in the mean IDWG (p = 0.001) and the TG level (p = 0.034) in the patients in the mHealth group was significantly greater than that in the face-to-face group.

CONCLUSIONS

The Di Care app use and the face-to-face training could improve dietary and fluid intake adherence in patients. However, mHealth could have more effect on the laboratory parameters than face-to-face training, largely reducing the IDWG.

TRIAL REGISTRATION

This study was registered in the Iranian Registry of Clinical Trials (No. ID IRCT20171216037895N5).

Relationship between fatigue and quality of life and related factors in family caregivers of patients on hemodialysis

BACKGROUND

The incessant and stressful nature of providing care to patients with chronic diseases can cause fatigue in caregivers. Caregivers' fatigue and reduced quality of life can reduce the patient's quality of care. Since it is important to pay attention to the mental health of family caregivers, this study investigated the relationship between fatigue and quality of life and their related factors in family caregivers of patients on hemodialysis.

METHODS

This cross-sectional descriptive-analytical study was performed in 2020-2021. One hundred seventy family caregivers were recruited by convenience sampling from two hemodialysis referral centers in the east of Mazandaran province, Iran. The data collection tools were the Family Caregiver Quality of Life questionnaire and Krupp's fatigue severity scale.

RESULTS

The majority (88%) of caregivers had moderate to severe fatigue. Caregivers' fatigue was a major factor influencing their quality of life. There was a significant fatigue difference between some categories of kinship and the caregiver's income level (P < 0.05). Caregivers with lower income and education levels, those who were the patient's spouse, and those who could not leave the patient alone had significantly worse quality of life than other caregivers (P < 0.05). Also, caregivers living with the patient in the same house had a worse quality of life than those living separately (P = 0.05).

CONCLUSION

Considering the high prevalence of fatigue among family caregivers of patients on hemodialysis and its adverse effect on their quality of life, it is recommended to perform routine screenings and implement fatigue alleviation interventions for these caregivers.

Comparing the effects of mHealth application based on micro-learning method and face-to-face training on treatment adherence and perception in haemodialysis patients: a randomised clinical trial

OBJECTIVES

Comparing the effects of a mobile health (mHealth) application based on the micro-learning method with face-to-face training on treatment adherence and perception among patients undergoing haemodialysis.

DESIGN

A single-blind randomised clinical trial.

SETTING

A haemodialysis centre in Isfahan, Iran.

PARTICIPANTS

Seventy patients.

INTERVENTION

Patients were trained individually for 1 month via the mHealth application or face-to-face training.

OUTCOME MEASURES

Treatment adherence and perception in patients were measured and compared.

RESULTS

The scores of treatment adherence in the mHealth and the face-to-face training groups were not significantly different at the pre-intervention stage (720.43±209.61 vs 702.861±181.47, p=0.693) and immediately after the intervention (1007.14±134.84 vs 947.86±124.46, p=0.060), while 8 weeks later, treatment adherence in the mHealth group was significantly higher than the face-to-face training group (1018.57±129.66 vs 914.29±126.06, p=0.001). The scores of both groups before the intervention did not differ in various dimensions of treatment adherence and perception (p>0.05). Scores of these variables also elevated significantly after the intervention (p<0.05).

CONCLUSIONS

The mHealth based on micro-learning and face-to-face training as interventions augmented treatment adherence and perception among the haemodialysis patients, but such improvements were detected much more in the patients trained with mHealth based on the micro-learning method than face-to-face training.

TRIAL REGISTRATION NUMBER

IRCT20171216037895N5.

Effect of a mobile-based educational app on blood pressure of patients with hypertension

BACKGROUND

Hypertension is known as one of the most important non-communicable pervasive diseases.

OBJECTIVE

The purpose of the present study was to determine the effect of a mobile-based educational app on the blood pressure (BP) of patients with hypertension.

METHODS

This clinical trial was conducted on 66 military personnel who were definitively diagnosed with hypertension by a physician, and then assigned randomly into two groups as intervention (receiving mobile-based educational app) and control (receiving standard medical management but no app). Before the intervention, BP levels of both groups were measured with a calibrated sphygmomanometer. After 6 weeks, the BPs of both groups were remeasured using the same sphygmomanometer. Thereafter, descriptive and inferential statistics, including paired t-test, Mann-Whitney, Chi-square and Wilcoxon tests, were used. The data obtained were analysed using SPSS-21 software at a significance level of p<0.05.

RESULTS

Comparison of the intervention and control groups showed no statistically significant difference between the groups in systolic BP (p=0.479) and diastolic BP (p=0.851) in the pre-intervention phase, but after the intervention, systolic and diastolic BP levels were significantly lower in the intervention group than in the control group (p=0.0001).

CONCLUSION

The results suggested that the mobile-based educational app had a significant effect on reducing BP in patients with hypertension. Therefore, using this app is recommended for those military personnel with hypertension.

The Effect of Auriculotherapy on Anxiety and Physiological Parameters of Male Coronary Angiography Patients: A Single-blind Randomized Clinical Trial

PURPOSE

To determine the effect of auriculotherapy on anxiety and physiological parameters of male patients undergoing coronary angiography.

DESIGN

A single-blind randomized clinical trial was performed in 2019 with 94 subjects selected by convenience sampling.

METHODS

The subjects were divided into 2 groups via random allocation. Two hours before angiography, all patients completed the Depression, Anxiety, and Stress Scale-21 items (DASS-21) and their physiological parameters (blood pressure, pulse rate, and respiratory rate) were measured 60 minutes before angiography. Auriculotherapy was performed on ear acupoints of patients in the experimental group for 4 minutes. In the control group, patients were given auricular acupressure in sham points. The anxiety and physiological parameters were re-measured 10 minutes after the intervention.

FINDINGS

Patients' anxiety was clinically lower in the experimental group (2.55 ± 0.27) compared to the control group (3.02 ± 0.33) (effect size = -1.42) after the intervention. There was no significant difference between 2 groups regarding physiological parameters after the intervention. However, the respiratory rates of patients were lower in the experimental group than in the control group (P < .001). After the intervention, physiological parameters significantly decreased in the experimental group compared to before the intervention (P < .001).

CONCLUSIONS

Auriculotherapy reduces patient anxiety; therefore, it can be used as a complementary method before angiography.

The effect of the demonstration-based progressive muscle relaxation technique on stress and anxiety in nurses caring for COVID-19 patients: a randomized clinical trial

BACKGROUND

Caring for patients with coronavirus disease 2019 (COVID-19) challenges nurses and causes them to experience stress and anxiety. From this perspective, it is of utmost importance to develop quick and effective intervention strategies to prevent numerous complications. This study aimed to investigate the effect of the progressive muscle relaxation technique, using the demonstration method on the stress and anxiety of nurses who care for COVID-19 patients.

METHODS

This randomized clinical trial was conducted in 2021. Forty-six nurses working in two referral hospitals with wards for COVID-19 patients in Tehran, Iran recruited by convenience sampling method and then randomly assigned to experimental or control groups. The nurses in the experimental group educated the progressive muscle relaxation by the demonstration method, and they were encouraged to practice it. The Depression Anxiety Stress Scale-21 was utilized to measure the stress and anxiety levels in the nurses.

RESULTS

Before the intervention, the levels of stress in the experimental and control groups were 13.91 ± 2.41 vs. 14.34 ± 2.74 (p = 0.571), and their anxiety was 13.34 ± 3.41 vs. 12.78 ± 2.21 (p = 0.510), respectively. After the intervention, the levels of stress in the experimental and control groups were 10.95 ± 2.01 vs. 14.17 ± 2.34 (p < 0.001), and their anxiety was 9.47 ± 2.37 vs. 12.91 ± 1.85 (p < 0.001), respectively. Moreover, the levels of stress and anxiety in the experimental group significantly diminished after intervention (p < 0.001), but no significant changes were observed in the control group (p > 0.05).

CONCLUSION

Concerning the effectiveness of the progressive muscle relaxation technique in relieving the stress and anxiety of the nurses caring for COVID-19 patients, it is suggested to include this relaxation technique in nursing courses.

Comparison of challenges of the nursing educational system in Iran and Turkey

OBJECTIVES

This study compares the challenges of the nursing educational system in Iran and Turkey at the undergraduate, postgraduate, and Ph.D. levels.

DESIGN

A narrative review.

DATA SOURCES

A comprehensive computer-based search was conducted in PubMed, Scopus, ProQuest, ISI web of knowledge, Cochrane, Google Scholar, and Science direct databases, without time limit, until May 2022. Finally, 31 article were finally included in the study. The Preferred Reporting Items for Systematic Reviews and Meta-Analyses 2020 guidelines were used.

RESULTS

Some challenges of the nursing educational system were common to the two countries such as: problems in the student enrollment system, the need to add courses to improve critical thinking skills and problem solving and creativity, lack of part-time courses for postgraduate and doctoral students, lack of attention to training community health students, employment of students in hospitals without assessment of clinical skills, lack of job opportunities for PhD students in hospitals. In Turkey, compared to Iran, there are strengths in the nursing educational system, including: have an accreditation program, giving importance to the discussion of research and evidence-based care in undergraduate and strengthening the clinical skills of doctoral students.

CONCLUSIONS

Iranian policymakers can use the strengths of the Turkish nursing education system, which is close to Iran in terms of context, to help improve this education system. Given the many challenges the two countries face in this regard, we suggest that by comparing and modeling the nursing education system of leading countries in this field such, both Iran and Turkey take effective steps to grow and improve the nursing education system.

Comparison of Iran's nursing education with developed and developing countries: a review on descriptive-comparative studies

Background

Iran’s nursing education has undergone significant modifications in the last decades, especially following the Islamic revolution and the Iran-Iraq war. This review outlined changing trends in Iran’s nursing education and evaluate its status compared to other developing and developed countries.

Methods

Six international and two national electronic data sources were searched up to May 2021, using relevant keywords and terms. The studies were included if they addressed history, development, or evolutionary aspects of Iran’s nursing education or evaluated its status by comparing it with developing or developed countries, using Bereday's model. To obtain more relevant information, the organizational documents of the Iranian Ministry of Health and Medical Education and the Iranian Ministry of Culture and Higher Education were searched. Of 753 evidence found in the initial search, 73 were considered eligible for this review. A systematic and unbiased data synthesis was performed and a narrative and tabulated summary was presented.

Results

The evolution in Iran’s nursing education has resulted in the establishment of Bachelor, Master, and Ph.D. programs. Iran’s nursing education system plays an important role in fulfilling the healthcare system’s mission, and it does not hold a dissatisfactory position in comparison with other developed and developing countries. However, this system is expected to be more versatile for the upcoming changes and advancements.

Conclusion

Iran’s nursing education has a moderate rating despite recent changes. Hence, this system has to be modified in some aspects by adopting experiences of other countries, with an appropriate and successful education system, to prepare future highly competent nurses.

Investigating the relationship between quality of life and hope in family caregivers of hemodialysis patients and related factors

Background

Family caregivers of hemodialysis patients are the first and most crucial source of care at home. They experience many problems in the care of hemodialysis patients, which can affect their quality of life and hope, affecting the quality of care provided to patients. This study aimed to determine the relationship between quality of life and hope in family caregivers of hemodialysis patients.

Methods

A cross-sectional (descriptive-analytical) study performed on 300 family caregivers in the east of Mazandaran province in Iran. Data were collected using the Family Caregiver Quality of Life (FQOL), SF8 and adult hope scale. Data analysis was performed in SPSS version 16, and a P-value of below 0.05 was considered statistically significant.

Results

The results showed that, there was a direct and significant relationship between hope and quality of life. However, the quality of life was significantly lower in suburban residents, the unemployed, spouses, people with lower education and income levels, caregivers who cannot leave their patients alone, those living with their patients in the same house, and those taking care of male patients, compared to other participants (P < 0.05). Suburban residents, the unemployed, people with an insufficient level of income, and those living with their patients in the same house had significantly lower hope, compared to other subjects.

Conclusion

Since an increase of hope and quality of life of caregivers can cause improved quality of patient care, it is recommended that hope-based educational programs and interventions be implemented for caregivers.

Psychological consequences for family caregivers of patients receiving hemodialysis: threat or opportunity?

BACKGROUND

Family caregivers of patients receiving hemodialysis experience physical and psychological disorders. They are unfortunately neglected. The aim of this study was to explain the psychological consequences for family caregivers of patients receiving hemodialysis.

METHODS

This qualitative inductive conventional content analysis research approach was conducted in Tehran, Iran. Nineteen hemodialysis patient caregivers were enrolled via purposive sampling. Data collection was conducted through in-depth and semi-structured interviews until reaching data saturation. All interviews were recorded, transcribed, imported into the Open Code Software, and analyzed using the Graneheim and Lundman methods.

RESULTS

The results included two main categories: (1) threats to the psychological integrity; (2) development of capabilities. The first main category comprised the sub-categories of "care-related negative feelings and emotions," care-related stress and its behavioral impacts on care, "psychological disorders arising from care provision," and "impaired quality and quantity of sleep." The second main category comprised of the sub-categories of "care-related positive feelings and emotions" and "coping strategies."

CONCLUSIONS

The present study showed that though caring for hemodialysis patients threatens the caregiver's psychological integrity, it provides the opportunity of development capabilities.

Explaining the experiences of nursing administrators, educators, and students about education process in the COVID-19 pandemic: a qualitative study

BACKGROUND

The coronavirus disease 2019 (COVID-19) has severely influenced various aspects of human life, particularly education. This study aimed to explain the impact of the COVID-19 pandemic on nursing education from administrators, educators, and students' perspectives.

METHODS

This qualitative study with a conventional content analysis approach was conducted from June to October 2020 at a nursing school in Tehran. Thirteen participants were enrolled using purposive sampling. Data collection was through in-depth and semi-structured interviews and continued until reaching data saturation. Nursing administrators, educators, and students constructed interviews to understand nursing education changes during the pandemic. All interviews were recorded, transcribed, reviewed, coded, and analyzed using the Graneheim and Lundman methods.

RESULTS

Interviewed respondents included administrators and professors (n = 6) and nursing students (n = 7). The respondents reported five main topic areas: (1) safe management in ambiguous situations; (2) perceived situations; (3) adaptive coping; (4) educational facilitators and challenges, and (5) continuing education in an uncertain context. The central theme was "close conflict of education with COVID-19".

CONCLUSIONS

The current study noted instability and challenges placed on nursing education during the pandemic. Opportunities were addressed during the pandemic to improve the nursing training process using planning, scientific management, emerging technology, innovative educational opportunities, and comprehensive support from institutional stakeholders. Clear guidelines and recommendations are needed to ensure medical education safety during the pandemic.

Designing and Validation of Health-Related Quality of Life Inventory for Family Caregivers of Hemodialysis Patients

Background:

Family caregivers are important sources of care for hemodialysis patients. Although caring for a family member is a pleasant feeling, experiencing lots of physical and psychological caregiving burden influences the quality of life among family caregivers of hemodialysis patients. This study aimed to design and validate the quality of life inventory for family caregivers of patients on hemodialysis.

Methods:

A sequential-exploratory mixed method was conducted in Tehran, Iran, in 2017-2018. In the qualitative phase, the researcher conducted in-depth semi-structured interviews with 19 participants. Finally, a pool of 93 items was extracted from this phase. Then, psychometric properties such as face validity (Impact Score>1.5), content validity ratio (CVR>0.63), content validity index (Item Content Validity Index: ICVI>0.78 , Scale Content Validity Index/Average: SCVI/Ave>0.8) and Kappa value (Kappa>0.7, internal consistency (Cronbach’s alpha>0.7), relative reliability (ICC: interclass correlation coefficient), absolute reliability (Standard Error of Measurement: SEM and Minimal Detectable Changes: MDC), convergent validity (Correlation Coefficient between 0.4-0.7), interpretability, responsiveness, feasibility, and ceiling and floor effects were assesse.

Results:

The quality of life inventory for family caregivers of hemodialysis patients was developed with 34 items and five factors (namely patient care burden, conflict, positive perception of situations, self-actualization, fear, and concern). The findings confirm that the scale is acceptable regarding validity, reliability and other measurement features.

Conclusions:

This inventory is consistent with the health care status in Iran. Therefore, it can be used to measure the quality of life among family caregivers of hemodialysis patients.

Quality of Life among Family Caregivers of Patients on Hemodialysis and its Relevant Factors: A Systematic Review

BACKGROUND

Family caregivers are considered as hidden patients experiencing physical and mental disorders. This affects the quality of not only their lives but also the health care provided to patients.This study aimed to investigate the quality of life (QOL) and its related factors among the caregivers of patients undergoing hemodialysis.

METHODS

This systematic review was conducted based on the eight-step guidelines presented by the York University. The databases relevant to the medical field including Nursing and Allied Health, Web of Science, Scopus, Pubmed, Embase, PsycINFO and Psychology Library were used. Finally, 12 articles observing the inclusion criteria and with regard to the research questions were found. The data obtained from these articles were summarized, classified, and analyzed.

RESULTS

QOL among Family Caregivers of Patients on Hemodialysis is low, compared to the general population; however, their QOL is higher than the patients under their care. Factors relevant to the QOL for caregivers including age, gender, perceived social support, perceived burden of care, affliction with other diseases (lupus, hypertension, hypothyroidism and depression), intellectual understanding of the limitations of the patient's disease in their daily life, employment of adaptation strategies, better marital relationships, accepting self and family relationship with the patient (mother and wife). Furthermore, the factors associated with care takers affecting the quality of caregivers' lives were age, QOL and the type of treatment.

CONCLUSIONS

Caregivers of patients undergoing hemodialysis enjoyed low QOL. Since there is a direct relationship between family caregivers' quality and patients' QOL, health care system and health policy makers should pay more attention to family caregivers.

Preparation and characterization of poly lactide-co-glycolide nanoparticles of SN-38

SN-38 (7-ethyl-10-hydroxycamptothecin) is the active metabolite of irinotecan (CPT-11), which is 100-1000-fold more cytotoxic than irinotecan. Nonetheless, the extreme hydrophobicity of SN-38 has prevented its clinical use. SN-38 is poorly soluble in aqueous solutions, and it is practically insoluble in most physiologically compatible and pharmaceutically acceptable solvents. One way of improving the solubility and stability of SN-38 is to formulate the drug into nanoparticles. Incorporation of cytotoxic agents into nanoparticles has also shown increased toxicity. In this study, poly lactide-co-glycolide was used for the preparation of nanoparticles of SN-38. The nanoparticles were fabricated by an emulsification/solvent evaporation method. The effect of several variables on nanoparticle characteristics was evaluated, including the ratio of drug-polymer, the amount of the poly vinyl alcohol as surfactant, and the internal phase volume/composition. The SN-38 encapsulation efficiency and the particle size distribution were optimized by varying these parameters. Nanoparticles were spherical with a relatively mono-dispersed size distribution. As the ratio of acetone to dichloromethane increased, a considerable decrease in the particle size of nanoparticles was achieved. The encapsulation efficiency of all samples was more than 80%. Changing the poly vinyl alcohol concentration in the external phase had some effects on size and morphology and encapsulation efficiency. It was shown that SN-38 nanoparticles are considerably stable in a long-term stability study.