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A survey of prevalence of hypertriglyceridemia and low HDL in the population of Isfahan with age over 20 years
N Sarrafzdegan , N Mohammadifard , M Rafiy ,
Volume 56, Issue 2 (30 1998)
Abstract
Regarding the importance of cardiovascular disease in the health of societies, Hyperlipidemia is considered as an important risk factor. One of the case recently put forward in the fat profile, is high TG (triglycerides) and low HDL-C (High Density Lipoprotein). Nowadays, we believe that TG without the presence of low HDL-C is not considered as a risk factor for cardiovascular disease. So it was decided to perform a descriptive study to define the prevalence of this syndrom, like other risk factors, in urban population of Isfahan. Samples were selected by random sampling method and the sample size, to have reliability of 95%, was about 1200 from the people over 20 year old in 6 age groups and 2 sexes. After inviting the people while going fast (about 14 hours), a questionnaire including perfect identifications was filled and blood factors include total cholesterol, TG, LDL-C (LOW Density Lipoprotein), HDL-C and F.B.S (Fasting Blood Sugar) were measured. Then the statistical analyzing of data was done to define the relation between TG and HDL-C. Regarding the coefficient of correlation and P.value <0.05 in different age and sex groups (except over 70 years old group which was not significant) was defined that TG has an inverse relation to HDL-C and the prevalence in the urban population of Isfahan is 19.7%. Results got from studying the relation between TG serum level and high LDL/HDL fraction (equal or more than five) showed that the more TG gets, the more the fraction is and regarding to its prevalence (11.6%) in Isfahan. It can be a risk factor for cardiovascular disease. So regarding the high prevalence of High TG and low HDL-C syndrome, treating this syndrome can be considered as one of the primary prevention methods. To fufil the latter goal firstly the syndrome must be identified and the related patients must be treated. So the patients with high TG must be tested for HDL-C and LDL-C too. And secondly therapeutic actions to increase HDL-C and to decrease TG level must be done.
Relation between vitamin D and calcium and post operation hypocalcemia in total thyroidectomy
Leila Asefkabiri , Abbas Alibakhshi , Seyed-Hassan Emami-Razavi , Mahtab Mohammadifard , Alireza Abdollahi ,
Volume 75, Issue 3 (June 2017)
Abstract

Background: Hypocalcemia is one of the most prevalent complications following total thyroidectomy. Over recent years, in addition to hormone parathyroid hormone (PTH), vitamin D has been also studied as a factor causing post-total thyroidectomy hypocalcemia. This survey seeks to study the relationship between the serum level of vitamin D before surgery and during post-total thyroidectomy hypocalcemia.

Methods: A group of 57 patients volunteering for total thyroidectomy were studied on Vali-e-Asr Hospital, Tehran, Iran, from March 2013 to March 2015. In all these patients, pre-surgery calcium, vitamin D and parathyroid hormone (PTH) as well as the level of calcium during the post-surgery first two days were measured. Based on objectives of this study, the relationship be-tween pre-surgery vitamin D level and post-surgery hypocalcemia was examined.

Results: The average age of patients participating in the survey was 24.1±13.3. They included 19 women (33.3%) and 38 men, total of 40 patients (70.2%). Their average post-surgery calcium level was 9.2±0.77 milligrams per deciliters (mg/dl) and their average vitamin D content before the surgery was 42±12.1 nanomole per liter (nmol/l). The average calcium level before the surgery and the first post-surgery day were meaningfully different in terms of statistics (P<0.001). In terms of vitamin D, 37 patients (64.9%) had pre-surgery vitamin D deficiency and 20 patients (35.1%) had vitamin D insufficiency. Of 37 patients with pre-surgery vitamin D deficiency, 26 were diagnosed with post-surgery first-day hypocalcemia and of 20 patients with vitamin D insufficiency, 14 suffered post-surgery first-day hypocalcemia. This difference was not statistically meaningful (P>0.001). Of 37 patients with pre-surgery vitamin D deficiency, 31 suffered post-surgery second-day hypocalcemia and of 20 patients with vitamin D insufficiency, 18 suffered second-day hypocalcemia. This difference was not statistically meaningful either (P>0.001).

Conclusion: The current study showed that the serum level of vitamin D before total thyroidectomy does not have any role in the occurrence of post-surgery hypocalcemia which is almost common after this type of surgery.

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