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Original paper

Epidemiologic study of children hospitalized with addictive substance intoxication

Farnaz Jelodarzadeh
1
,
Mehran Hakimzadeh
2
,
Farkhodeh Jamshidi
3

  1. Student Research Committee, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
  2. Department of Pediatrics, School of Medicine, Abouzar Hospital , Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
  3. Social Determinants of Health Research Center, Department of Forensic Medicine, School of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
Pediatr Pol 2021; 96 (2): 89–93
Online publish date: 2021/07/01
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Introduction

Poisoning is a serious, important and one of the most common causes of hospital emergency in many countries [1, 2]. Approximately 70% of cases of poisoning occur in children, with more than 90% being accidental [3]. Acute poisoning of children is a common emergency and one of the major causes of child mortality, especially in developing countries [3]. Many studies have been conducted on the causes of poisoning and their prevalence in different parts of the world, the results of which vary according to different regions, cultural characteristics, and time periods [4]. With the increasing prevalence of drug addiction in society, the pattern of poisoning in children has also changed dramatically and the number of children admitted to pediatric hospitals due to poisoning is increasing [5-7]. Drugs account for half of all poisoning in children and account for up to 91% of deaths in children in some parts of Iran [8, 9]. One of the common causes of drug intoxication in children is the traditional use of opium and its derivatives to relieve pain or calm the restless child [10]. Poisoning with opium and its derivatives can lead to decreased levels of consciousness, coma, apnea, respiratory suppression, and eventually death, and is always a cause of mortality due to poisoning in children [11]. Different types of drugs, including methadone, tramadol, heroin, etc. are used by children in various forms and cause intoxication. The majority of these cases are inadvertent and accidental consumption by children and other cases are related to unaware feeding and child abuse [12, 13]. Studies show that, like other countries, child poisoning is one of the significant and important problems in the Iranian health system. According to the results of the studies, the prevalence of types of poisoning in children is increasing and drugs are responsible for half of the poisonings and cause a high percentage of child mortality in different parts of Iran [14, 15], so that committing suicide is one of the causes of intoxication in adolescent children, which is more common in girls [16, 17]. Therefore, because of the high importance of recognizing drug poisoning in children, this study comprehensively examined the type and status of opioid and poisoning in children.

MATERIAL AND METHODS

In this retrospective study, the records of 300 children under 14 years (including 179 boys and 114 girls) were evaluated who were admitted to Abuzar and Razi hospitals of Ahwaz following intoxication with a variety of addictive substances (opium, methadone, heroin, etc.) in 2011-2016. Patients’ demographic information (age, gender, place of residence, education), patient records (history of illness, previous exposure to addictive substances), information on intoxication (type of intoxication agent, type of intoxication, type of use, amount of use, clinical symptoms after consumption, first symptom after consumption, patient symptoms after hospitalization, organ damage), paraclinical information [pH (normal range: 7.38-7.46), bicarbonate, blood pressure, O2 (normal range: 80-100 mmHg) and CO2 pressure (normal range: 35-45 mmHg), potassium, sodium, prothrombin time (PT), Partial Tromboplastin Time (PTT) and International normal size Ratio (INR)] and treatment information and plans (time to hospital arrival, hospital stay until first intervention, treatment plan, length of hospital stay, final outcome of patient status, complications with treatment) were recorded in a checklist. Descriptive statistics including frequency distribution tables of numerical indices were used to analyze the data. Chi-square and independent sample t-tests were used for correlation between variables. All analyses were performed using SPSS 22 software.

RESULTS

This study was examinedon on 300 patients, 114 (38%) were girls and 179 (59.7%) were boys, and the gender was not recorded for 7 cases. The age range of 0-2 years was the most abundant age group (62%) and the age range of 12-14 years had the lowest frequency (2%). The youngest patient was 1 day old and the oldest patient was 13 years old. Living of population in city and village were 52.3% & 46.7% respectly and for 3 cases living conditions were not recorded. Most common causes of poisoning were Methadone 40.3%, novan (a type of sleeping Medicin) 32%, and opium 8.7% . The most common symptoms among patients were drowsiness 10.3%, decreased level of consciousness 8.3%, fever, seizures and eloquence 7.3% and patients with asymptomatic were 1.3%. GE infection was the most common underlying disease (1%), and 96% of patients did not have an underlying disease. Percentage of of patients hospitalized were 77% for 1-3 days and 3% were not hospitalized for reasons such as death. Main treatment plans were Ampul Naloxan (maximim 10 mg) + NG Washing 16.3%, only Ampul Naloxan 9.3% and Charcol + Sorbitol + Ampul Naloxan + NG Washing 8.3%. 61% of patients were discharged with favorable conditions and 30.3% of patients were discharged with personal consent. Laboratory indicators of pH, PCO2, and Blood Suger (BS) did not differ significantly between patients in rural and urban areas (p = 0.616, p = 0.082, and p = 0.635, respectively; Table 2). Also, pH, PCO2, and BS were not significantly different between boys and girls (Table 3). The pH and PCO2 levels did not differ significantly in different age groups (p = 0.315, p = 0.109, respectively), but the BS level in different age groups was significantly different (p = 0.012). The age group 0-2 years with 212.73 had the highest and the age group 3-5 years with 102.85 had the lowest BS level.
pH, PCO2, and BS levels were not significantly associated with the type of opioid (p =  0.366, p = 0.113, and p = 0.176, respectively). Also pH, PCO2, and blood sugar (BS) levels were not significantly associated with the length of hospital stay (p = 0.10, p =  0.116, and 0.66, respectively; Table 4). There was no significant relationship between the type of drug-related symptoms and gender (p = 0.096). There was no significant relationship between the patient’s final recovery status and the type of drug used (p = 0.884). There was no significant relationship between the duration of hospitalization and the type of drug used (p = 0.921). Also, there was no significant difference between urban and rural patients in terms of the type of drug used (p = 0.648). There was a significant difference between girls and boys in terms of the type of drug used (p = 0.001). Also, the type of drug used was significantly different between different age groups (p < 0.0001).

DISCUSSION

Today, drug use and stimulant psychosis threaten all human societies as a serious problem [18]. These substances have acute and long-lasting effects on mood, attention, concentration, cognitive and mental functioning, cause reduced appetite, alterations and hallucinations in vision, can impair one’s memory, and lead to disruption and growth retardation [19]. In the present study, out of 300 patients, 59.7% were male (mean age 1 year and 64 days) and 38% were female (mean age 3 years), which can be attributed to a more specific behavioral pattern and sense of curiosity in boys that results in their tendency to consume unknown substances [20]. Pedan et al. showed that boys are more at risk of unintentional poisoning than girls because of physical activity [21]. The mean age of the children in this study was 2 years and 44 days. The youngest patient was 1 day old and the oldest patient was 13 years old. In the study of Kadivar et al. on drug intoxication in children in Tehran, the highest age of poisoning was 3.5 years and the lowest was 7 days [7]. In the study of Mansouri et al., 11.4% of children with intoxication in Tehran were less than 1 year old and 60% of them were 2-4 years old, while in the study of poisoned children in Ahvaz, 61% were in the age range of 0-2, being the most frequent age group [22]. In places like Golestan province, these substances are used to relieve pain or to calm restless children, and given the high percentage of children aged 0-2 in the present study, it can be said that such use is also seen in Khuzestan province [23].
In the present study, intoxication was higher in urban children (52.3%) compared to rural children (46.7%). In a study by Nikvarz et al., 45% of intoxicated children were city resident [24]. Novan was the main cause of intoxication in girls and methadone was the main cause of intoxication in boys and there was a significant relationship between the used substance and gender. Tramadol intoxication was also seen in boys only. This result contradicts the findings of the study by Nikvarz et al., in which no relationship was found between the intoxication factor and gender. In the present study, methadone (74.7% of cases) was the most important cause of poisoning. Unfortunately, in recent years, emergency referrals and deaths from methadone use are on the rise. The increased use of methadone on the one hand and the failure to take the necessary measures to prevent the poisoning of this dangerous substance in the community, on the other hand, has made it a threat to children. In the study of Mansouri et al., which evaluated the risk of unintentional child intoxication in Shahed Hospital in Tehran, narcotic drug intoxication was the highest prevalence (58.6%) followed by medical drug intoxication (30%) [22], also Alotaibi ingestion of small amounts of methadone can lead to death. There are overlaps between toxic and fatal concentrations; careless storage is a common cause of accidental poisoning of children [25]. In  Watson studies, patients who had taken long acting opioids such as methadone developed renarcosis up to 2 hours after their arrival to emergency room. Since the half life of naloxone is 60 to 90 minutes, it seems logical to observe patients for signs of recurrent toxicity for at least 2 hours [26]. In the study of Motlagh et al. in Ahvaz, opium was the cause of intoxication in 13.6% of children. Opium is one of the most common causes of intoxication. On the other hand, the use of novan as a sedative pseudo-narcotic drug with a destructive role on the respiratory system and with 32% intoxication is a major alarm for the family and society [27].
Drowsiness, decreased level of consciousness, fever, seizures, and delirium were the most prevalent symptoms among patients, respectively. In the study of Allameh et al., the most important complication of methadone intoxication was loss of consciousness, meiosis, delirium, convulsion and respiratory failure [28]. In the study of Besharat et al., the most common clinical symptoms were decreased consciousness and coma, cyanosis and meiosis, respiratory suppression, and seizure, respectively [23]. Nikvarz et al. investigated the causes of intoxication in children in Jiroft city. The results of their study suggested human drugs (36%), methadone (28%) and other drugs (13%) as the most common cause of intoxication, and reported nervous (39%), respiratory-neurological (16%), and gastrointestinal-neurological damage (10%) as the most common injuries, which were less prevalent in the present study [22]. In the present study, 77% of patients were admitted for 1-3 days. In the study of LoVecchio et al., the mean hospital stay of children with methadone intoxication was 2.2 days [29]. In the present study, 3.3% of patients died and cardiac arrest accounted for 11.7% of deaths. In the study of Besharat et al., 6% of patients died, which was higher than the present study [23].
There was no association between underlying disease and drug use in the present study. In the study of Kadivar et al., acute diarrhea and acute respiratory infection and irritability were the most common causes of prescribing a drug, and this was not observed in the present study [7]. In the study of Mansouri et al., the risk of intoxication in children with a previous history of intoxication was found to be 6.5%. In the present study, 30.3% of patients with personal consent and 61% after appropriate treatment were discharged. In the study of Nikvarz et al., 90% of children were discharged after appropriate treatment, which is higher than the present study. The most frequent treatment plan (16.3%) was Ampul Naloxan + NG washing. Ampul Naloxan and Charcoal + Sorbitol + Amp Naloxan + NG washing were the next ranks with 9.3% and 8.3% respectively, but there was no significant relationship between the type of drug used and the treatment plan, probably because of the similar nature of the drugs. In the study of Besharat et al. on drug intoxication in Golestan infants, treatment with Naloxan and oxygen and intravenous fluids were the main treatments.
There was no significant relationship between laboratory parameters including pH, PCO2, and BS with sex and drug type. Laboratory indices of pH and PCO2 were not significantly different in various age ranges, but BS index was highest in the age group of 0-2 years and lowest in the age group 3-5 years and there was a negative correlation between these two parameters.

CONCLUSIONS

Results showed that children aged 0-2 years were the most exposed to drug intoxication and methadone was the major cause of intoxication. Given the risk of dying of drug-poisoned children, it is essential that families, physicians, and health care personnel in the country have sufficient awareness of the dangerous effects of these drugs. It should also be noted that children who are drug addicts and children exposed to these substances are severely addicted during their adolescence. This provides the basis for their greater propensity to commit a crime, physical assault and rape, car accidents, dropping out of school, absenteeism and school-related illnesses and sexually transmitted diseases. Therefore, it is necessary to prevent such intoxications, which may be deliberate, by formulating laws, while raising awareness.

ACKNOWLEDGMENT

This reseach is part of  General Physition thesis has don by Farnaz Jolodarzadeh and was supported from Deputy of Research in Ahvaz Jundishapur University of Medical Sciences (B-95/005).

DISCLOSURE

The authors declare no conflict of interest.

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