Inclination of the inferior incisive with respect to the biotype facial in lateral cephalic radiographs in patients from 8 to 20 years of age in the city of Cuenca- Ecuador, during the period April - June 2021

The lower central incisors (ICI) play a significant role in dental occlusion because their inclination in the lower arch is essential for diagnosis and treatment planning since, they determine stability, masticatory function, harmony, and facial balance. Objective: To relate the inclination of the lower incisor with respect to the facial biotype in lateral cephalic radiographs in patients from 8 to 20 years of age in the city of Cuenca, Ecuador, during the period April-June 2021. Materials and Methods: Descriptive, documentary, and retrospective study. The sample consisted of 390 lateral skull radiographs according to the inclusion and exclusion criteria. Ricketts cephalometric analysis was used to identify the facial biotype and ICI inclination and Steiner cephalometry to obtain the skeletal class. Results: the relationship between ICI inclination and facial biotype is not statistically significant (p<0.05) (r= -0.054). However, the study shows that the female sex presents a higher frequency, especially at 16 years of age. In terms of prevalence, the dolichofacial biotype is representative in 41.5%, as well as skeletal class I in 48.9% and normal inclination in 52.8%. Conclusion: It was determined that, according to the population studied, the ICI was not related to the facial biotype.

Samantha Cualchi Albarracín, Lorena González Campoverde, Rafael García Abad

21-35

Analgesic pharmacological treatment of renal colic

Introduction: Nephritic colic is a painful episode of great intensity and acute onset, which after subsidence can experience intermittent relapses, frequently associated with nephrolithiasis, being the analgesic drugs used for the management of these patients. Objective: To compare the efficacy of the most used analgesic pharmacological treatments in the approach to nephritic colic due to nephrolithiasis. Methods: A systematic literature search was performed in PubMed, ScienceDirect, Redalyc and LILACS, using the search algorithm such as "pain" [MeSH Terms] OR "pain" [All Fields]) AND ("nephrolithiasis" [MeSH Terms] A total of 65 potential results were obtained, to then limit the study to 12 articles based on the criteria of the number of participants previously exposed, and the availability of the full text for free. Results: Among the analgesic drugs used for renal colic due to nephrolithiasis, it was demonstrated that the effect of NSAIDs, intravenous lidocaine, hydromorphine, even combinations such as ketorolac + isotonic saline can control general abdominal pain and pain due to nephrolithiasis. Conclusions: Among the included studies, it was found that IV ibuprofen and IM diclofenac are even more effective than IV paracetamol or IV morphine, with the administration of diclofenac for renal colic pain showing greater advantage and being preferred by patients. patients.

Gema María Mora Moya, Carlos Alexander Bravo Zambrano, Dhamar Ojeda Espinal, Denisse Gómez Pilozo

36-48

Magnetic resonance-guided high-intensity focal ultrasound for the treatment of essential tremor

Introduction. Essential tremor is one of the most common movement disorders, it is characterized by being a bilateral, rhythmic and involuntary action tremor, beginning in the hands and extending to the head, at the beginning it can be mild, but over time it is observed a compromise in the quality of life of the patient, its diagnosis is based mainly on the clinic. There are various pharmacological and non-pharmacological treatments, among the latter, high-intensity focal ultrasound guided by magnetic resonance since it is currently used in patients with severe tremor or who do not respond to pharmacological therapy. This consists of applying multiple ultrasonic beams in the ventral intermediate nucleus of the thalamus, with the aim of tremor suppression. Objective. use of high intensity focal ultrasound guided by magnetic resonance for the treatment of essential tremor. Methodology. Narrative literature review on magnetic resonance-guided-high-intensity focal ultrasound for the treatment of essential tremor, by searching the main sources and biomedical databases in English and Spanish: PubMed, Scopus and Science Direct. Results. The decrease in hand tremor after treatment with high-intensity focal ultrasound guided by magnetic resonance obtained positive results, presenting values greater than 40% effectiveness during the first three to twelve months, lasting these values over time up to two years, reaching a good therapeutic effect in essential tremor. Conclusion. High-intensity focal ultrasound guided by magnetic resonance is a minimally invasive therapeutic alternative that reduces essential tremor symptoms by a significant percentage.

Anabel Alejandra Ochoa Quizhpi, Jorge Eduardo Ochoa Aucay

78-88

Emotional and psychosocial repercussions in pediatric-juvenile cancer patients

Introduction: Worldwide, approximately 400,000 children and adolescents are diagnosed with cancer. Of this figure, 29,000 correspond to Latin America and the Caribbean. The main type of cancer in this age group is leukemia, leaving brain cancer as the second in frequency. Even though science has been rushing to provide greater survival, the quality of life and psychological effects produced by the disease and treatment have affected the physical and emotional stability in the patient. Objective: To detail the emotional and psychosocial repercussions on cancer patients in the infant-juvenile stage. Methodology: Nonexperimental study, descriptive type, bibliographic review. A search was carried out for articles according to the inclusion and exclusion criteria and found in the period between 2017 and 2022. Results: The quality of life of cancer patients will be affected by the psychological and emotional effects that arise in the diagnosis and treatment. Stress, anxiety, depression, behavioral changes, and cognition are the main psychosocial repercussions. The family environment serves as support for the patient and his caregiver. Conclusions: Both the cancer patient and their family environment experience emotional and psychosocial repercussions due to diagnosis and illness. Cancer education programs in children and adolescents represent a supporting factor to cope with the disease.

Lisseth Jacqueline Bravo Bustamante, María José Vintimilla Espinoza

89-103

Antibacterial effect of dragon's blood in in vitro cultures on ATCC bacterial strains

Objective. The objective of the research was to evaluate the antibacterial effect of dragon's blood (Croton lechleri) on in vitro cultures of ATCC bacterial strains; Staphylococcus aureus ATCC 25923 and Escherichia coli ATCC 25922, at different concentrations: 1%, 2%, 4%, 6%, 8%, 16%, 80%, 90% and 100%. Materials and methods. A total of 54 cultures were performed, of which 27 cultures corresponded to the analysis of the extract of dragon's blood (Croton lechleri) at different concentrations against Staphylococcus aureus ATCC 25923 and 27 cultures to the analysis of the extract of dragon's blood (Croton lechleri) against the bacterium Escherichia coli ATCC 25922, where 3 replicates were applied for each treatment. Results. In the results, no inhibition halo was observed for the sensitivity discs prepared at different concentrations; therefore, the ATCC bacterial strains Staphylococcus aureus 25923 and Escherichia coli 25922 do not show sensitivity to dragon's blood (Croton lechleri). Conclusions. From the results obtained we can conclude that dragon's blood (Croton lechleri) does not present antibacterial activity for the ATCC bacterial strains; Staphylococcus aureus 25923 and Escherichia coli 25922.

Víctor Álvaro Tualombo Masabanda, Edy Paul Castillo Hidalgo

104-124