Publications by authors named "Ahmad Enhesari"

6 Publications

  • Page 1 of 1

A Multicenter Survey on the Trend of Chest CT Scan Utilization: Tracing the First Footsteps of COVID-19 in Iran.

Arch Iran Med 2020 11 1;23(11):787-793. Epub 2020 Nov 1.

Department of Radiology, Shohada-E-Tajrish Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran.

Background: Chest computed tomography (CT) scan has been used widely to diagnose COVID-19 in Iran.

Objectives: To trace the footsteps of COVID-19 in Iran by exploring the trend in using chest CT scans and its economic impact on radiology departments. Methods: In this cross-sectional study, the number of imaging examinations from 33 tertiary radiology departments in 9 large cities of Iran was collected from September 23, 2019 to March 20, 2020 (Months 1 to 6) and the corresponding months in 2018-2019.

Results: A 50.2% increase was noted in the chest CT scan utilization in 2019-2020 compared to 2018-2019. This increase was +15%, +15%, +27%, +2%, +1% in Months 1-5 of 2019-2020, respectively. In Month 6 of 2019-2020, a 251% increase in the acquisition of chest CT scans was observed compared to the Month 6 of 2018-2019. Following negative balance of revenue from Month 1 to 5 with respect to the inflation rate, the total income in Month 6 was further 1.5% less than the same Month in 2018-19.

Conclusion: The observed peak in chest CT utilization in Month 3 prior to the surge in Month 6 could be explained by the seasonal influenza. However, unawareness about an emerging viral disease, i.e. COVID-19, might have underutilized chest CT in Months 4 and 5 before the official announcement in Month 6. The unbalanced increase in the workload of radiology departments in the shortage of cardiothoracic radiologists with the simultaneous decrease in income initiated a vicious cycle that worsened the economic repercussions of the pandemic.
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http://dx.doi.org/10.34172/aim.2020.105DOI Listing
November 2020

Opium Use and Head and Neck Cancers: A Matched Case-Control Study in Iran.

Asian Pac J Cancer Prev 2020 03 1;21(3):783-790. Epub 2020 Mar 1.

Department of Otorhinolaryngology Head and Neck Surgery, Shafa Hospital, Kerman University of Medical Sciences, Kerman, Iran.

Background: Head and Neck (H and N) cancers include malignant tumors of the nasal cavity, pharynx, paranasal sinuses, oral cavity, larynx and salivary glands. Opium use might be related to these cancers. The aim of this study was to investigate the relation between Opium and its Derivatives (O and D) use and the incidence of H and N cancers.

Methods: In this case-control study conducted in Kerman, 140 patients with HandN cancers and 280 healthy controls (matched for age, gender, and place of residence) were included. Information about their use of O and D, cigarette smoking, alcohol and diet were collected using a structured questionnaire. Conditional logistic regression was used to investigate the relation between variables.

Results: The use of opioids was associated with an increased risk of H and N cancers (Adjusted OR: 8.13; CI: 4.08-16.2). A significant dose-response relation between O and D use was observed, with high use Adjusted OR=8.91; 95% CI: 4.03-19.65 and low use Adjusted OR=6.52; 95% CI: 3.18- 13.36. This dose-response association was stronger in patients with laryngeal cancer and opioids use, with high use Adjusted OR = 11.17; 95% CI=4.48-28.09 and low use Adjusted OR = 9.46; 95% CI= 3.97- 22.52.

Conclusion: The results show that opium use can be considered as an important risk factor for H and N cancers. Also in Iran, opium seems to play a more important role than cigarette smoking.
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http://dx.doi.org/10.31557/APJCP.2020.21.3.783DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7437338PMC
March 2020

Presence or absence of palmaris longus and fifth superficial flexor digitorum; is there any effect on median nerve surface area in wrist sonography.

Iran J Radiol 2014 Dec 10;11(4):e14441. Epub 2014 Nov 10.

Students Research Committee, Kerman University of Medical Sciences, Kerman, Iran.

Background: Carpal tunnel syndrome (CTS) describes a set of symptoms caused by compression of the median nerve in the wrist, which is the most common site of nerve compression in the upper limb. This syndrome is a primary source of pain and reduced function in these patients, and the cause is compression of the median nerve where it passes beneath the flexor retinaculum in the wrist.

Objectives: The aim of the present cross sectional study is to assess the absence of palmaris longus and fifth superficial flexor digitorum tendon as normal anatomic variations on the sonographic measurement of median nerve surface area in healthy individuals' wrists.

Patients And Methods: Ninety-three healthy volunteers underwent clinical evaluation for determining the presence of tendons in both wrists and sonographic measurement of median nerve surface area.

Results: In 41 of 186 (22%) hands, the palmaris longus tendon was absent and absence of the fifth flexor digitorum tendon was noted in eight (4.30 %). The median surface area in the hands without palmaris longus was meaningfully lower than the hands with it (P = 0.025), while the difference in the median surface area was not statistically significant with regard to presence of the fifth flexor digitorum tendon (P = 0.324).

Conclusions: Based upon the findings of the present study, it seems that the median surface area as a sonographic finding is probably related to presence or absence of the palmaris longus tendon, so that hands with the tendon present have larger surface areas. In addition, it seems that this sonographic finding does not depend on the function of the fifth superficial flexor digitorum tendon. Therefore, no correlation between CTS and the presence of palmaris longus tendon should be observed.
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http://dx.doi.org/10.5812/iranjradiol.14441DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4347728PMC
December 2014

Early ultrasound assessment of renal transplantation as the valuable biomarker of long lasting graft survival: a cross-sectional study.

Iran J Radiol 2014 Jan 30;11(1):e11492. Epub 2014 Jan 30.

Applied Cell Sciences Department, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran.

Background: To date, there has been little agreement on the use of ultrasonographic parameters in predicting the long-term outcome after transplantation. This study evaluates whether ultrasonography of the graft performed in the early stage after transplantation is a valuable predictor for long-term-outcome.

Objectives: The aim of this study was to evaluate the association of ultrasonographic parameters (resistive index [RI], pulsatility index[PI], end diastolic velocity [EDV], graft length and graft parenchymal volume) measured within the first week after transplantation with 6 months graft function.

Patients And Methods: A cross-sectional study was performed on 91 (46 males and 45 females) living renal transplants between April 2011 and February 2013. All patients underwent an ultrasonography at the first week after transplantation. Intrarenal Doppler indices including RI, PI and EDV were measured at the interlobar artery level and the graft length and parenchymal volume were defined with gray scale ultrasonography. Graft function was estimated at 6months by glomerular filtration rate (GFR). Unpaired t-test and multivariate-linear and logistic regression analysis were used to estimate the relationship between ultrasonographic parameters and GFR.

Results: Fourteen patients (15.4%) had impaired graft function after 6 months (GFR less than 60 ml/min/1.73m2). Multivariate linear regression analysis showed significant correlation between GFR at 6 months and RI, PI and EDV with a P value of 0.026, 0.016 and 0.015, respectively. Logistic regression analysis showed that GFR<60 ml/min/1.73 m2 at 6 months was significantly associated with RI>0.7 (odds ratio=2.20, P value=0.004) and PI>1.3 (odds ratio=2.74, P value<0.001) and EDV<9 cm/Sec (odds ratio=1.83, P value=0.03).

Conclusions: In this study, kidney transplant recipients with a lower RI and PI and a higher EDV at 1week showed better graft function at 6 months after transplantation.
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http://dx.doi.org/10.5812/iranjradiol.11492DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3955852PMC
January 2014

Increased carotid artery intima-media thickness in pregnant women with gestational diabetes mellitus.

J Tehran Heart Cent 2012 Nov 30;7(4):156-9. Epub 2012 Nov 30.

Physiology Research Center, Kerman University of Medical Sciences, Kerman, Iran.

Background: Pregnant women with previous gestational diabetes mellitus are at increased risk of progressive carotid artery disorders. The current study evaluated carotid intima-media thickness (IMT) in pregnant women with gestational diabetes at two time points of mid-term and full-term pregnancy to determine whether gestational diabetes mellitus causes increased IMT.

Methods: This cross-sectional study carried out at Afzalipour Hospital (Kerman, Iran) between 2009 and 2010, recruited 50 women who were at high risk of gestational diabetes during pregnancy and had an oral glucose challenge test (OGCT) as screening for gestational diabetes. B-mode ultrasound scans were performed at baseline and at two time points of mid-term pregnancy (20 to 24 weeks) and full-term pregnancy (36 to 38 weeks) on all the participants. The mean IMT of common carotids and internal carotid arteries from two walls (near and far walls) at four different angles was assessed.

Results: An overall comparison between the impaired OGCT test group and the control group revealed significant differences in carotid IMT in the mid-term (0.65 ± 0.07 vs. 0.59 ± 0.06 mm; p value = 0.002) and full-term (0.65 ± 0.05 vs. 0.59 ± 0.04 mm; p value < 0.001) pregnancy; however, the trend of the changes in carotid IMT during mid to full-term pregnancy was insignificant in each group (p value > 0.05).

Conclusion: Carotid IMT was significantly higher in the women with gestational diabetes than that in the normoglycemic group in different trimesters. This finding denotes that atherosclerosis might start years before the diagnosis of gestational diabetes in vulnerable women.
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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3537204PMC
November 2012

Assessment of NAFLD cases and its correlation to BMI and metabolic syndrome in healthy blood donors in Kerman.

Gastroenterol Hepatol Bed Bench 2012 ;5(4):183-9

Digestive Disease Research Center, Tehran University of Medical Sciences, Tehran, Iran.

Aim: The aim of this study was to review cases of non-alcoholic fatty liver disease cases and to determine the prevalence of non-alcoholic fatty liver disease as a cause of elevated alanine aminotransferase in healthy blood donors in the Permian area and also assess risk factors of NAFLD such as BMI and correlation with metabolic syndrome in these subjects.

Background: Non-alcoholic fatty liver disease has been increasingly recognized as the most common pathological conditions affecting the liver. Non-alcoholic fatty liver disease is now recognized as the hepatic component of the metabolic syndrome, which includes hyperlipidemia, glucose intolerance, obesity, and systemic hypertension.

Patients And Methods: 2002 randomly selected blood donors were recruited for this study. Subjects with elevated serum ALT level (greater than two times the upper limit of normal) were chosen for further follow up. Subjects with a persistently elevated ALT level, evidence of steatosis on computerized tomography and a negative cirrhosis screen (viral hepatitis B and C serology, autoimmune hepatitis, transferrin saturation <45% and a no history of excess alcohol consumption or hepatotoxic medication) were presumed to have non-alcoholic fatty liver disease.

Results: 378 donors (20.5% of all subjects recruited) had elevated ALT levels at first measurement. 35 cases had persistently elevated serum ALT level. In 22 of these 35 cases (62.9%) non-alcoholic fatty liver disease was the diagnosis. The mean body mass index of the 22 cases was 31.18 ±5.7 and non-alcoholic fatty liver disease was associated with the metabolic syndrome in these subjects.

Conclusion: Non-alcoholic fatty liver disease is the most common diagnosis for subjects with elevated serum ALT level in healthy blood donors in Kerman, Iran.
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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4017463PMC
May 2014