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Article: Triple Assessment of a Palpable Parotid Lump in "One-Stop" Clinics.

Sah, S K / Sah, N K / Khan, Z A

Journal of maxillofacial and oral surgery

2021 Volume 21, Issue 3, Page(s) 972–978

Abstract: Introduction: The National Institute of Clinical Excellence in the UK (NICE) recommended the use of "one-stop" clinics for the assessment and management of head and neck lumps like those established for breast lumps. "One-stop" clinics should follow a ... ...

Abstract	Introduction: The National Institute of Clinical Excellence in the UK (NICE) recommended the use of "one-stop" clinics for the assessment and management of head and neck lumps like those established for breast lumps. "One-stop" clinics should follow a triple assessment protocol involving physical examination, radiological imaging and fine-needle aspiration cytology (FNAC). Methods: A retrospective analysis of 144 patients with suspected parotid tumours from 2005 to 2011 was done. Patients were assessed for individual modalities and compared against the final histological diagnosis. Statistical analysis was used for sensitivity and specificity, as well as positive and negative predictive values. All calculations were performed using SPSS version 16 (Statistical Packages for the Social Sciences, Chicago, IL). A Results: A total of 105 patients underwent all the three modalities. Out of them, 93 had imaging that was considered radiologically benign and 12 were reported to have a malignant lesion. Cytologically, 75 were found to have a benign tumour, 13 were malignant, and 17 were considered to be indeterminate. The most common benign neoplasm was pleomorphic adenoma followed by Warthin's tumour. The sensitivity and specificity of triple assessment were 96% ( Conclusions: The overall accuracy of triple assessment was found to be 92%. This study concludes that triple assessment is a useful assessment tool to evaluate a patient with parotid lump. Supplementary information: The online version contains supplementary material available at 10.1007/s12663-021-01590-5.
Language	English
Publishing date	2021-05-20
Publishing country	India
Document type	Journal Article
ZDB-ID	2502352-4
ISSN	0974-942X ; 0972-8279
ISSN (online)	0974-942X
ISSN	0972-8279
DOI	10.1007/s12663-021-01590-5
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Article ; Online: A response to "Changes in undergraduate medical education due to COVID-19: a systematic review" - A medical student perspective.

Ahmed, S / Khan, Z A / Velurajah, R / Morje, M

European review for medical and pharmacological sciences

2021 Volume 25, Issue 17, Page(s) 5328

MeSH term(s)	COVID-19 ; Education, Medical, Undergraduate ; Humans ; SARS-CoV-2 ; Students, Medical
Language	English
Publishing date	2021-09-16
Publishing country	Italy
Document type	Letter ; Comment
ZDB-ID	605550-3
ISSN	2284-0729 ; 1128-3602 ; 0392-291X
ISSN (online)	2284-0729
ISSN	1128-3602 ; 0392-291X
DOI	10.26355/eurrev_202109_26638
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Article: COVID-19 and Acute Ischemic Stroke; An Indian Experience.

Kulkarni, Rahul / Pujari, Shripad / Palasdeokar, Nilesh / Jagtap, Sujit / Jog, Sameer / Khan, Z A

Annals of Indian Academy of Neurology

2021 Volume 24, Issue 4, Page(s) 632–634

Language	English
Publishing date	2021-05-21
Publishing country	India
Document type	Journal Article
ZDB-ID	2240174-X
ISSN	1998-3549 ; 0972-2327
ISSN (online)	1998-3549
ISSN	0972-2327
DOI	10.4103/aian.AIAN_897_20
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Article: Experimental study of thermodynamic assessment of a small scale solar thermal system

Helvaci, H.U / Khan, Z.A

Energy conversion and management. 2016 June 01, v. 117

2016

Abstract: In this study, a scaled solar thermal system, which utilises HFE 7000, an environmentally friendly organic fluid has been designed, commissioned and tested to investigate the system performance. The proposed system comprises a flat-plate solar energy ... ...

Abstract	In this study, a scaled solar thermal system, which utilises HFE 7000, an environmentally friendly organic fluid has been designed, commissioned and tested to investigate the system performance. The proposed system comprises a flat-plate solar energy collector, a rotary vane expander, a brazed type water-cooled condenser, a pump and a heat recovery unit. In the experimental system, the flat-plate collector is employed to convert HFE-7000 into high temperature superheated vapour, which is then used to drive the rotary vane expander, as well as to generate mechanical work.Furthermore, a heat recovery unit is employed to utilise the condensation heat. This heat recovery unit consists of a domestic hot water tank which is connected to the condenser. Energy and exergy analysis have been conducted to assess the thermodynamic performance of the system. It has been found that the collector can transfer 3564.2W heat to the working fluid (HFE 7000) which accounts for the 57.53% of the total energy on the collector surface. The rotary vane expander generates 146.74W mechanical work with an isentropic efficiency of 58.66%. In the heat recovery unit, 23.2% of the total rejected heat (3406.48W) from the condenser is recovered in the hot water tank and it is harnessed to heat the water temperature in the domestic hot water tank up to 22.41°C which subsequently will be utilised for secondary applications. The net work output and the first law efficiency of the solar ORC is found to be 135.96W and 3.81% respectively. Exergy analysis demonstrates that the most exergy destruction rate takes place in the flat plate collector (431W), which is the thermal source of the system. Post collector, it is followed by the expander (95W), the condenser (32.3W) and the pump (3.8W) respectively. Exergy analysis results also show that the second law efficiency of the solar ORC is 17.8% at reference temperature of 15°C. Parametric study analysis reveals that both increase in the expander inlet pressure and the degree of superheat enhances the thermodynamic performance of the solar ORC.
Keywords	exergy ; heat ; solar collectors ; vapors ; water temperature
Language	English
Dates of publication	2016-0601
Size	p. 567-576.
Publishing place	Elsevier Ltd
Document type	Article
ZDB-ID	2000891-0
ISSN	0196-8904
ISSN	0196-8904
DOI	10.1016/j.enconman.2016.03.050
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Article ; Online: Patterns of facial fractures in children.

Khan, S R / Khan, Z A / Hanif, S / Riaz, N / Warraich, R A

The British journal of oral & maxillofacial surgery

2019 Volume 57, Issue 10, Page(s) 1009–1013

Abstract: Morbidity and mortality among children is usually the result of trauma. Because a child's face is retruded relative to the protecting skull, has a thicker layer of adipose tissue, more elastic bones, flexible sutures lines, the presence of tooth buds ... ...

Abstract	Morbidity and mortality among children is usually the result of trauma. Because a child's face is retruded relative to the protecting skull, has a thicker layer of adipose tissue, more elastic bones, flexible sutures lines, the presence of tooth buds within the jaws, and the lack of pneumatisation of the sinuses, the facial bones fracture less commonly than in adults. Our aim was to assess the patterns of such fractures in children who presented to the department of Oral and Maxillofacial Surgery, King Edward Medical University/Mayo Hospital Lahore, Pakistan. All 535 eligible children between the ages of 1-16 years who presented during the two years December 2009 - December 2011 were included in the study. Facial fractures were diagnosed by clinical examination, plain radiographs, and computed tomography, and the pattern of fractures of the facial bones including the frontal bone, orbital bones, maxilla, zygoma, naso-orbito-ethmoidal complex, mandible, and dentoalveolar region was documented. The male:female ratio was 2:1 with 369 male (70%) and 166 female (31%) patients. Fall was the cause in 212 (39%), and in 167 (31%) it was road traffic accidents, while sports were the cause in 135 (25%). The naso-orboto-ethmoid complex was fractured in 37 cases (7%) while 104 children (19%) presented with isolated fractures of the zygomatic bone. The maxilla was fractured in 195 cases (36%), the mandible in 380 (71%), and dentoalveolar trauma was the cause in 256 (50%). The mandible was the bone that was most often fractured (mostly in boys and usually as a result of falls during summer vacations), with the peak occurring in those aged 8-12 years.
MeSH term(s)	Accidental Falls ; Accidents, Traffic ; Adolescent ; Child ; Child, Preschool ; Facial Bones/injuries ; Female ; Frontal Bone ; Humans ; Infant ; Male ; Maxilla ; Retrospective Studies ; Skull Fractures/epidemiology ; Skull Fractures/etiology ; Zygoma ; Zygomatic Fractures/epidemiology ; Zygomatic Fractures/etiology
Language	English
Publishing date	2019-09-07
Publishing country	Scotland
Document type	Journal Article
ZDB-ID	605685-4
ISSN	1532-1940 ; 0266-4356
ISSN (online)	1532-1940
ISSN	0266-4356
DOI	10.1016/j.bjoms.2019.08.020
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Article ; Online: Multicentre analysis of oncological and survival outcomes following anastomotic leakage after rectal cancer surgery (Br J Surg 2009; 96: 1066-1075).

Vinodkumar, N / Khan, Z A J

The British journal of surgery

2010 Volume 97, Issue 3, Page(s) 456; author reply 456–7

MeSH term(s)	Aged ; Humans ; Multicenter Studies as Topic ; Rectal Neoplasms/surgery ; Surgical Wound Dehiscence/mortality ; Survival Analysis
Language	English
Publishing date	2010-03
Publishing country	England
Document type	Comment ; Letter
ZDB-ID	2985-3
ISSN	1365-2168 ; 0263-1202 ; 0007-1323 ; 1355-7688
ISSN (online)	1365-2168
ISSN	0263-1202 ; 0007-1323 ; 1355-7688
DOI	10.1002/bjs.7009
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Article: Assessment of attitude and hesitancy toward vaccine against COVID-19 in a Pakistani population: A mix methods survey.

Khan, Z A / Allana, R / Afzal, I / Ali, A S / Mariam, O / Aslam, R / Shah, I A / Allana, A / Haider, M M / Jandani, R / Khan, Z / Siddiqui, A M / Shah, J A / Butt, U

Vacunas

2021 Volume 23, Page(s) S26–S32

Abstract: Objective: The objective of this study was to assess the attitude and hesitancy toward vaccine against COVID-19 in a Pakistani Population.: Materials and methods: A mix-method, prospective study was conducted and adults (aged ≥18 years) residing in ... ...

Abstract	Objective: The objective of this study was to assess the attitude and hesitancy toward vaccine against COVID-19 in a Pakistani Population. Materials and methods: A mix-method, prospective study was conducted and adults (aged ≥18 years) residing in Pakistan were invited to participate. The questionnaire was prepared, hosted in Google Forms and circulated through electronic platforms and was also available to be done in in-person. Data was compiled from 15th September to 30th November 2020. Results: The response rate was 80%. A total of 1003 participants were included in the final analysis. Of them, 75% completed survey questionnaire online, while remaining 25% responded in-person. The mean age of the participants was 29.62 ± 10.47 years. The majority of participants were females; 60.9% ( Conclusion: This study demonstrated that majority of the participants showed positive attitude toward considering COVID-19 vaccine. However awareness with informed knowledge of efficacy, possible adverse effects and cost would be of added great value to increase the real response of Pakistani population toward COVID-19 vaccination.
Language	English
Publishing date	2021-09-07
Publishing country	Spain
Document type	Journal Article
ISSN	1576-9887
ISSN	1576-9887
DOI	10.1016/j.vacun.2021.08.002
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Article ; Online: Comparison of 18F-labelled fluoro-2-deoxyglucose-PET with conventional computed tomography for staging and response assessment in paediatric and adult patients with nodular lymphocyte-predominant Hodgkin's lymphoma.

Rauf, M Shahzad / Khan, Z A / Zahir, M N / Al-Sweedan, Suleimman / Al-Kofide, Amani / Alharthy, Hannan / Almugbel, Fahad A / Osmani, Asif / Elhassan, Tusneem Ahmed M / Khafaga, Yasser / Maghfoor, Irfan / Akhtar, Saad

Nuclear medicine communications

2021 Volume 42, Issue 8, Page(s) 899–906

Abstract: Background: Nodular lymphocyte-predominant Hodgkin lymphoma (NLPHL) is an uncommon subtype of Hodgkin lymphoma. Data are limited regarding 18F-labelled fluoro-2-deoxyglucose (FDG)-PET use in NLPHL. We are reporting our experience with FDG-PET utility in ...

Abstract	Background: Nodular lymphocyte-predominant Hodgkin lymphoma (NLPHL) is an uncommon subtype of Hodgkin lymphoma. Data are limited regarding 18F-labelled fluoro-2-deoxyglucose (FDG)-PET use in NLPHL. We are reporting our experience with FDG-PET utility in staging and response assessment NLPHL patients. Methods: We retrospectively studied a population of all newly diagnosed or relapsed/refractory patients who underwent both pre-treatment contrast-enhanced computed tomography (CeCT) and an FDG-PET and also at the end of planned treatment. Results: We identified 68 patients found to have in total 312 scans, 78 paired pre-therapeutic and post-treatment CeCT and FDG-PET scans. Among them, 55 were male, with a median follow-up was 48 months. Median SUV-max was 8.3 (2.0-21.0). FDG-PET and CeCT were concordant in 80% (62/78) of staging scans. In 20% (16/78) of patients in whom a discordance was observed, FDG-PET resulted in upstaging in 13 scans and downstaging in 3 scans. The sensitivity of CeCT was 92% for nodal staging and 42% for extralymphatic staging when compared to FDG-PET. The specificity of CeCT was 98% as compared to FDG-PET. For response assessment, there was poor agreement between the CeCT and FDG-PET in assigning complete remission of disease scores as FDG-PET was able to identify the absence of disease despite the presence of a radiologically evident residual mass on CeCT. The sensitivity for CeCT compared to FDG-PET was 100% while the specificity was 43% for detection of post-treatment response. Conclusion: For NLPHL, pre-therapeutic FDG-PET scan is better than CeCT staging. FDG-PET has much better specificity for response assessment than CeCT.
MeSH term(s)	Adult ; Child ; Fluorodeoxyglucose F18 ; Hodgkin Disease ; Humans ; Male ; Middle Aged ; Positron-Emission Tomography ; Retrospective Studies
Chemical Substances	Fluorodeoxyglucose F18 (0Z5B2CJX4D)
Language	English
Publishing date	2021-04-14
Publishing country	England
Document type	Journal Article
ZDB-ID	758141-5
ISSN	1473-5628 ; 0143-3636
ISSN (online)	1473-5628
ISSN	0143-3636
DOI	10.1097/MNM.0000000000001406
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Article: Innovative overheating solution for solar thermal collector using a reflective surface included in the air gap

Amiche, A / El Hassar, S.M.K / Larabi, A / Khan, Z.A / Khan, Z / Aguilar, F.J / Quiles, P.V

Renewable energy. 2019 Nov. 08,

2019

Abstract: In this work, a new solution to prevent the overheating of solar collectors in the case of stagnation is presented. The solution proposed consists of inserting a reflective sheet inside the solar collector between the absorber and the glass cover to ... ...

Abstract	In this work, a new solution to prevent the overheating of solar collectors in the case of stagnation is presented. The solution proposed consists of inserting a reflective sheet inside the solar collector between the absorber and the glass cover to reduce the incoming energy by reflecting solar radiation. This protection is switched ON or OFF according to the absorber temperature. A prototype has been manufactured and tested in outside conditions and in laboratory. The prototype was tested with different percentages of protection. With 50% of protection, the overheating problem is eliminated. A simplified numerical model of the solar collector with the protection was developed and has been validated. The calculated temperature values are very close to the measured data. The experimental and numerical results showed the good behaviour of the proposed solution.
Keywords	air ; energy ; glass ; mathematical models ; prototypes ; renewable energy sources ; solar collectors ; solar radiation ; temperature
Language	English
Dates of publication	2019-1108
Publishing place	Elsevier Ltd
Document type	Article
Note	Pre-press version
ZDB-ID	2001449-1
ISSN	0960-1481
ISSN	0960-1481
DOI	10.1016/j.renene.2019.11.023
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Article ; Online: Induction of labour with vaginal prostaglandin tablet vs gel.

Khan, Z A / Abdul, B / Majoko, F

Journal of obstetrics and gynaecology : the journal of the Institute of Obstetrics and Gynaecology

2011 Volume 31, Issue 6, Page(s) 492–494

Abstract: The objective of this study was to compare outcomes in women whose labour was induced with vaginal prostaglandin E2 tablets with those induced with prostaglandin gel. We compared outcomes of induction during two audits conducted in 2005 (PGE2 gel) and ... ...

Abstract	The objective of this study was to compare outcomes in women whose labour was induced with vaginal prostaglandin E2 tablets with those induced with prostaglandin gel. We compared outcomes of induction during two audits conducted in 2005 (PGE2 gel) and 2009 (PGE2 tablets). We found that there was no difference in induction rates; 21% in 2005 and 24% in 2009. The recommended dose of prostaglandin E2 was exceeded in 6% and 17% of women induced with gel and tablets, respectively (p=0.007). There was a difference in use of syntocinon to augment uterine contractions, 39% vs 58% for women induced with gel and tablets, respectively (p=0.001). There was no difference in overall operative delivery, 37% in gel and 38% in tablets. There was no difference in the proportion of women who had vaginal birth within 24 h; 50% vs 42% for gel and tablet, respectively (p=0.187). We conclude that compared to prostaglandin gel, women who received prostaglandin tablets were more likely to require syntocinon to augment contractions.
MeSH term(s)	Administration, Intravaginal ; Adult ; Dinoprostone/administration & dosage ; Female ; Gels/administration & dosage ; Humans ; Labor, Induced/methods ; Oxytocics ; Pregnancy ; Pregnancy Outcome ; Retrospective Studies ; Tablets/administration & dosage
Chemical Substances	Gels ; Oxytocics ; Tablets ; Dinoprostone (K7Q1JQR04M)
Language	English
Publishing date	2011-08
Publishing country	England
Document type	Comparative Study ; Journal Article
ZDB-ID	604639-3
ISSN	1364-6893 ; 0144-3615
ISSN (online)	1364-6893
ISSN	0144-3615
DOI	10.3109/01443615.2011.584642
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