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Malik MK, Suryadevara R, Malik MF. Anomalous origin of the right coronary artery. Radiol Case Rep 2023; 18:4338-4340. [PMID: 37789923 PMCID: PMC10542770 DOI: 10.1016/j.radcr.2023.09.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2023] [Revised: 08/24/2023] [Accepted: 09/05/2023] [Indexed: 10/05/2023] Open
Abstract
Coronary artery anomalies are congenital variations of the origin(s), course(s), and terminations(s) of the 3 main epicardial coronary arteries that make up less than 1% of cases. Clinically, coronary artery anomalies can be asymptomatic or present with dyspnea, chest pain, and even sudden cardiac death. In this report, we discuss the case of a patient who was found to have a rare presentation of an anomalous right coronary artery originating from the anterior ascending aorta 20.9 mm above the sino-tubular junction that was discovered on coronary CT angiography.
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Affiliation(s)
- Muhammad K. Malik
- Division of Internal Medicine, Loyola University Medical Center, 2160 S 1st Ave, Maywood, IL, 60153 USA
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Malik MK, Wroblewski I, Darki A. Pulmonary Cement Embolism After Vertebroplasty. Cureus 2023; 15:e39194. [PMID: 37332403 PMCID: PMC10276658 DOI: 10.7759/cureus.39194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/18/2023] [Indexed: 06/20/2023] Open
Abstract
Pulmonary cement embolism (PCE) is a known complication that can occur in the setting of vertebroplasty. The majority of these cases are asymptomatic and found incidentally on imaging. There are no current management recommendations regarding PCE. We present a case of a patient who underwent vertebroplasty complicated by a symptomatic sub-massive PCE.
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Affiliation(s)
- Muhammad K Malik
- Internal Medicine, Loyola University Medical Center, Maywood, USA
| | | | - Amir Darki
- Cardiology, Loyola University Medical Center, Maywood, USA
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Wu W, Malik MK, Cantero-Chinchilla S, Lawrie T, Yan WJ, Tanner G, Remenyte-Prescott R, Chronopoulos D. Guided waves-based damage identification in plates through an inverse Bayesian process. Ultrasonics 2022; 125:106773. [PMID: 35688013 DOI: 10.1016/j.ultras.2022.106773] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Revised: 05/11/2022] [Accepted: 05/18/2022] [Indexed: 06/15/2023]
Abstract
The use of guided waves to identify damage has become a popular method due to its robustness and fast execution, as well as the advantage of being able to inspect large areas and detect minor structural defects. When a travelling wave on a plate interacts with a defect, it generates a scattered field that will depend on the defects geometry. By analysing the scattered field, one can thus characterize the type and size of the plate damage. A Bayesian framework based on a guided waves interaction model for damage identification of infinite plate for the first time is presented here. A semi-analytical approach based on the lowest order plate theories is adopted to obtain the scattering features for damage geometries with circular symmetry, resulting in an efficient inversion procedure. Subsequently, ultrasound experiments are performed on a large aluminium plate with a circular indentation to generate wave reflection and transmission coefficients. With the aid of signal processing techniques, the effectiveness and efficiency of the proposed approach are verified. A full finite element model is used to test the damage identification scheme. Finally, the scattering coefficients are reconstructed, reliably matching the experimental results. The framework supports digital twin technology of structural health monitoring.
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Affiliation(s)
- W Wu
- Institute for Aerospace Technology & The Composites Group, The University of Nottingham, NG7 2RD, United Kingdom.
| | - M K Malik
- Institute for Aerospace Technology & The Composites Group, The University of Nottingham, NG7 2RD, United Kingdom; Aernnova Engineering Division S.A., Madrid, 28034, Spain.
| | - S Cantero-Chinchilla
- Department of Mechanical Engineering, University of Bristol, Bristol, BS8 1TR, UK
| | - T Lawrie
- School of Mathematical Sciences, University of Nottingham, NG7 2RD, United Kingdom
| | - W J Yan
- State Key Laboratory of Internet of Things for Smart City and Department of Civil and Environmental Engineering, University of Macau, China
| | - G Tanner
- School of Mathematical Sciences, University of Nottingham, NG7 2RD, United Kingdom
| | - R Remenyte-Prescott
- Resilience Engineering Research Group, Faculty of Engineering, University of Nottingham, University Park, Nottingham, NG7 2RD, United Kingdom
| | - D Chronopoulos
- KU Leuven, Department of Mechanical Engineering & Mecha(tro)nic System Dynamics (LMSD), 9000, Belgium
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Almekhlafi GA, Albarrak MM, Mandourah Y, Hassan S, Alwan A, Abudayah A, Altayyar S, Mustafa M, Aldaghestani T, Alghamedi A, Talag A, Malik MK, Omrani AS, Sakr Y. Presentation and outcome of Middle East respiratory syndrome in Saudi intensive care unit patients. Crit Care 2016; 20:123. [PMID: 27153800 PMCID: PMC4859954 DOI: 10.1186/s13054-016-1303-8] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2016] [Accepted: 04/19/2016] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND Middle East respiratory syndrome coronavirus infection is associated with high mortality rates but limited clinical data have been reported. We describe the clinical features and outcomes of patients admitted to an intensive care unit (ICU) with Middle East respiratory syndrome coronavirus (MERS-CoV) infection. METHODS Retrospective analysis of data from all adult (>18 years old) patients admitted to our 20-bed mixed ICU with Middle East respiratory syndrome coronavirus infection between October 1, 2012 and May 31, 2014. Diagnosis was confirmed in all patients using real-time reverse transcription polymerase chain reaction on respiratory samples. RESULTS During the observation period, 31 patients were admitted with MERS-CoV infection (mean age 59 ± 20 years, 22 [71 %] males). Cough and tachypnea were reported in all patients; 22 (77.4 %) patients had bilateral pulmonary infiltrates. Invasive mechanical ventilation was applied in 27 (87.1 %) and vasopressor therapy in 25 (80.6 %) patients during the intensive care unit stay. Twenty-three (74.2 %) patients died in the ICU. Nonsurvivors were older, had greater APACHE II and SOFA scores on admission, and were more likely to have received invasive mechanical ventilation and vasopressor therapy. After adjustment for the severity of illness and the degree of organ dysfunction, the need for vasopressors was an independent risk factor for death in the ICU (odds ratio = 18.33, 95 % confidence interval: 1.11-302.1, P = 0.04). CONCLUSIONS MERS-CoV infection requiring admission to the ICU is associated with high morbidity and mortality. The need for vasopressor therapy is the main risk factor for death in these patients.
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Affiliation(s)
- Ghaleb A Almekhlafi
- Department of Intensive Care Services, Prince Sultan Military Medical City, Riyadh, 11159, Saudi Arabia.
| | - Mohammed M Albarrak
- Intensive Care Unit, Prince Sultan Cardiac Center, Riyadh, 11159, Saudi Arabia
| | - Yasser Mandourah
- Department of Intensive Care Services, Prince Sultan Military Medical City, Riyadh, 11159, Saudi Arabia
| | - Sahar Hassan
- Department of Intensive Care Services, Prince Sultan Military Medical City, Riyadh, 11159, Saudi Arabia
| | - Abid Alwan
- Department of Intensive Care Services, Prince Sultan Military Medical City, Riyadh, 11159, Saudi Arabia
| | - Abdullah Abudayah
- Department of Intensive Care Services, Prince Sultan Military Medical City, Riyadh, 11159, Saudi Arabia
| | - Sultan Altayyar
- Department of Intensive Care Services, Prince Sultan Military Medical City, Riyadh, 11159, Saudi Arabia
| | - Mohamed Mustafa
- Department of Intensive Care Services, Prince Sultan Military Medical City, Riyadh, 11159, Saudi Arabia
| | - Tareef Aldaghestani
- Department of Intensive Care Services, Prince Sultan Military Medical City, Riyadh, 11159, Saudi Arabia
| | - Adnan Alghamedi
- Department of Intensive Care Services, Prince Sultan Military Medical City, Riyadh, 11159, Saudi Arabia
| | - Ali Talag
- Department of Intensive Care Services, Prince Sultan Military Medical City, Riyadh, 11159, Saudi Arabia
| | - Muhammad K Malik
- Department of Intensive Care Services, Prince Sultan Military Medical City, Riyadh, 11159, Saudi Arabia
| | - Ali S Omrani
- Department of Medicine, King Faisal Specialist Hospital and Research Centre, Riyadh, 11211, Saudi Arabia
| | - Yasser Sakr
- Department of Anesthesiology and Intensive Care, Uniklinikum Jena, 07743, Jena, Germany
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Malik MK, Slovin JP, Hwang CH, Zimmerman JL. Modified expression of a carrot small heat shock protein gene, hsp17. 7, results in increased or decreased thermotolerancedouble dagger. Plant J 1999; 20:89-99. [PMID: 10571868 DOI: 10.1046/j.1365-313x.1999.00581.x] [Citation(s) in RCA: 70] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
We have determined that one small heat shock protein gene, encoding Hsp17.7, plays an important role in the ability of carrot cells and plants to survive thermal stress. Transgenic cells and regenerated plants were generated in which the carrot Hsp17.7 gene was either constitutively expressed (denoted CaS lines) or expressed as a heat inducible antisense RNA (denoted AH lines). Thermotolerance measurements demonstrated that CaS lines were more thermotolerant than vector controls and AH antisense lines were less thermo- tolerant than vector controls. RNA analysis demonstrated that Hsp17. 7 mRNA was detectable, but not abundant, prior to heat shock in CaS cells, but not in vector control cells. Conversely, RNA analysis of antisense cells showed that, after heat shock, the amounts of mRNA for Hsp17.7 was moderately less abundant in AH cells than in vector controls. Analysis of protein synthesis in CaS cells did not indicate substantial synthesis or accumulation of Hsp17.7, or any small Hsp, at 23 degrees C. However, in the most thermotolerant line, protein synthesis was maintained at a higher rate than in other cell lines at a more extreme heat shock (42 degrees C). In contrast, antisense AH cells showed reduced synthesis of many Hsp, large and small. These results suggest that the Hsp17.7 gene plays a critical, although as yet not understood, role in thermotolerance in carrot. This represents the first demonstration of the ability to both increase and decrease thermotolerance by the manipulation of expression of a single gene.
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Bhatia S, Malik MK, Bhatia BP. Fracture of tracheostomy tubes--report of 3 cases. Indian J Chest Dis Allied Sci 1992; 34:111-3. [PMID: 1459661] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Fracture of the tubes appears to be caused by their prolonged use and defective fusion at the junction of cannula and phalange. We report here three cases of fractured polyvinyl chloride tracheostomy tube, an unusual complication of tracheostomy, presenting as foreign body in the trachea.
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Affiliation(s)
- S Bhatia
- Department of E.N.T., L.L. R.M. Medical College, Meerut
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Malik MK, Kumar A, Bhatia BP. Juvenile nasopharyngeal angiofibroma. Indian J Med Sci 1991; 45:336-42. [PMID: 1668094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
A total of 27 cases of nasopharyngeal angiofibroma were treated in this series. All were males and age ranged between 9 and 24 years. Predominant symptoms were epistaxis and nasal obstruction. Nasopharyngeal mass was present in all cases. Cheek extensions were observed in 6. Surgery was done in 25 cases. Transpalatal excision was done in all cases. Cheek extensions were removed through separate sublabial incisions. Additional lateral rhinotomy was required in one case. Death occurred in one case during surgery due to excessive haemorrhage. Out of 25 cases, 21 were followed up for periods ranging from 2-5 years. Complete cure was observed in 16 cases. Recurrence occurred in 5 cases, who were operated upon again. Out of 5 recurrence operated cases, 2 cases showed a second recurrence.
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Affiliation(s)
- M K Malik
- Department of ENT, Medical College, Meerut, India
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Malik MK, Kumar A, Bhatia BP. Changing pattern in laryngeal tuberculosis. Indian J Chest Dis Allied Sci 1986; 28:60-2. [PMID: 3596654] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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Malik MK, Goel VK, Kumar A, Bhatia BP. A foreign body in the bronchus. Indian J Chest Dis Allied Sci 1984; 26:276-8. [PMID: 6545271] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/05/2023]
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Malik MK, Bhatia BP. Nasopharyngeal angiofibroma. J Indian Med Assoc 1984; 82:53-6. [PMID: 6086764] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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Malik MK, Bhatia BP, Kumar A. Control of haemorrhage in tonsillectomy. J Indian Med Assoc 1982; 79:115-6. [PMID: 7169534] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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Malik MK, Bhatia BP, Kumar A. Rare laryngeal foreign body in a child. Indian Pediatr 1982; 19:95-6. [PMID: 7106984] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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Gupta RK, Malik MK. "Leukaemia presenting as deafness". Indian J Med Sci 1979; 33:38-40. [PMID: 457217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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Malik MK, Gupta RK, Samuel KC. Primary lymphoma of middle ear--a case report. Indian J Cancer 1976; 13:188-9. [PMID: 989756] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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Malik MK, Sharma JK. Referred otalgia of dental origin. J Indian Dent Assoc 1975; 47:413-6. [PMID: 1074999] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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Abstract
An in vitro study has shown a high bactericidal activity of 2 per cent acetic acid. An in vitro study in 400 cases of C.S.O.M. has shown that conservative treatment of C.S.O.M. by pH change with 2 per cent acetic acid is better than antibiotic ear drops alone. However, combined therapy (pH change plus antibiotic ear drops) is definitely superior to single treatment by either of the two methods. Two per cent acetic acid is well tolerated by the middle ear mucosa except in 1 per cent cases, where its use had to be discontinued because of irritation. The use of 2 per cent acetic acid is highly recommended, particularly for poor nations, because of its negligible cost as compared to antibiotic ear drops.
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Abstract
All schizophrenic symptoms remitted completely in six out of 14 adults who had not responded to phenothiazine drugs and who were then given propranolol. Another patient improved markedly and four improved moderately. Two had minimal or transient improvement, and one left hospital unchanged after a short, severe, toxic reaction. The six with complete remissions all began to improve within a few days of starting propranolol and the florid symptoms remitted completely after three to 26 days. They were stabilized on a daily dose of 500-3,500 mg of propranolol and at the time of writing had remained well for up to six months. Two patients who stopped propranolol after their symptoms remitted relapsed severely within a few days. Toxic effects (ataxia, visual hallucinations, and confusional states) were related to the rate of increase rather than to the absolute dose of propranolol. After the procedure was modified unwanted effects were usually mild or absent.
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