City Research Online

Abay, T., Shafqat, K. & Kyriacou, P. A. ORCID: 0000-0002-2868-485X (2019). Perfusion Changes at the Forehead Measured by Photoplethysmography during a Head-Down Tilt Protocol. Biosensors, 9(2), article number 71. doi: 10.3390/bios9020071

Shafqat, K., Ysehak Abay, T. ORCID: 0000-0002-9096-7551, Budidha, K. ORCID: 0000-0002-6329-8399 & Kyriacou, P. A. ORCID: 0000-0002-2868-485Xview all authors (2015). Empirical Mode Decomposition of NIRS signals for assessment of cerebral and muscle thermoregulation

Shafqat, K., Langford, R. M. & Kyriacou, P. A. (2015). Estimation of instantaneous venous blood saturation using the Photoplethysmograph (PPG) waveform. Physiological Measurement, 36(10), pp. 2203-2214. doi: 10.1088/0967-3334/36/10/2203

Kyriacou, P. A. & Shafqat, K. (2012). Heart Rate Variability (HRV) and cardiovascular dynamic changes during local anesthesia. In: Kamath, M.V., Watanabe, M.A. & Upton, A.R.M. (Eds.), Heart Rate Variability (HRV) Signal Analysis: Clinical Applications. (pp. 221-240). CRC Press.

Phillips, J. P., Belhaj, A., Shafqat, K. , Langford, R. M., Shelley, K. H. & Kyriacou, P. A.view all authors (2012). Modulation of finger photoplethysmographic traces during forced respiration: venous blood in motion?. 2012 Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC), pp. 3644-3647. doi: 10.1109/EMBC.2012.6346756

Shafqat, K., Kyriacou, P. A., Pal, S. K. & Langford, R. M.view all authors (2011). Instantaneous venous oxygenation estimation using the Photoplethysmograph (PPG) waveform. Journal of Physics: Conference Series, 307(1), article number e012018. doi: 10.1088/1742-6596/307/1/012018

Shafqat, K., Pal, S., Kumari, S. & Kyriacou, P. A.view all authors (2011). Empirical mode decomposition analysis of HRV data from patients undergoing local anaesthesia (brachial plexus block). Physiological Measurement, 32(4), pp. 483-497. doi: 10.1088/0967-3334/32/4/008

Shafqat, K., Pal, S., Kumari, S. & Kyriacou, P. A.view all authors (2011). HRV analysis in local anesthesia using Continuous Wavelet Transform (CWT). Engineering in Medicine and Biology Society, EMBC, 2011 Annual International Conference of the IEEE, 2011, pp. 4808-4811. doi: 10.1109/iembs.2011.6091191

Shafqat, K. (2010). Heart Rate Variability analysis in patients undergoing local anesthesia. (Unpublished Doctoral thesis, City, University of London)

Kyriacou, P. A., Shafqat, K. & Pal, S. K. (2009). Pilot investigation of photoplethysmographic signals and blood oxygen saturation values during blood pressure cuff-induced hypoperfusion. Measurement, 42(7), pp. 1001-1005. doi: 10.1016/j.measurement.2009.02.005

Shafqat, K., Pal, S. K., Kumari, S. & Kyriacou, P. A.view all authors (2009). Empirical Mode Decomposition (EMD) analysis of HRV data from locally anesthetized patients. In: Conference proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Conference. EMBC 2009. Annual International Conference of the IEEE, 3-6 Sept. 2009, Minneapolis, MN. doi: 10.1109/IEMBS.2009.5335000

Shafqat, K., Pal, S., Kumari, S. & Kyriacou, P. A.view all authors (2009). Time-Frequency analysis of HRV data from locally anesthetized patients. Annual International Conference of the IEEE Engineering in Medicine and Biology Society, 2009. EMBC 2009, pp. 1824-1827. doi: 10.1109/IEMBS.2009.5332604

Kyriacou, P. A., Shafqat, K. & Pal, S. K. (2007). Photoplethysmography and blood oxygen saturation during blood pressure cuff-induced hypoperfusion. Anesthesia and Analgesia, 105(6), S100-S115. doi: 10.1213/01.ane.0000290771.60068.d5

Santhi, K., Shafqat, K., Kyriacou, P. A. & Pal, S. K.view all authors (2007). Investigation of heart rate variability in patients undergoing hand surgery under axillary plexus block. British Journal of Anaesthesia, 98(2), 282P-283P. doi: 10.1093/bja/ael319

Kyriacou, P. A., Shafqat, K. & Pal, S. K. (2007). Investigation of the effect of peripheral perfusion on photoplethysmography and blood oxygen saturation during blood pressure cuff-induced hypoperfusion. British Journal of Anaesthesia, 98(2), pp. 281-297. doi: 10.1093/bja/ael319

Kyriacou, P. A., Shafqat, K. & Pal, S. K. (2007). Arterial blood oxygen saturation during blood pressure cuff-induced hypoperfusion. Paper presented at the Third International Conference on Optical and Laser Diagnostics (ICOLAD 2007), 22-25 May 2007, London, UK.

Shafqat, K., Pal, S. K. & Kyriacou, P. A. (2007). Evaluation of two detrending techniques for application in Heart Rate Variability. In: 2007 ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY, VOLS 1-16. 29th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, 22-26 Aug 2007, Lyon, France. doi: 10.1109/IEMBS.2007.4352275

Kyriacou, P. A., Shafqat, K. & Pal, S. K. (2007). Investigation of photoplethysmmographic signals and arterial blood oxygen saturation values (SpO(2)) during blood pressure cuff-induced hypoperfusion. Paper presented at the Fifth IASTED International Conference on Biomedical Engineering, 14-17 Feb 2007, Innsbruck, Austria.

Shafqat, K., Pal, S. K., Kumari, S. & Kyriacou, P. A.view all authors (2007). Changes of Heart Rate Variability in patients under local anaesthesia. Paper presented at the 29th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, 22-26 Aug 2007, Lyon, France.

Shafqat, K., Kyriacou, P. A., Pal, S. K. & Kumari, S.view all authors (2007). Investigation of heart rate variability in patients under local anaesthesia. In: Gardner, JW (Ed.), Proceedings of the Fifth IASTED International Conference on Biomedical Engineering. The Fifth IASTED International Conference on Biomedical Engineering (BioMED 2007), 14-16 Feb 2007, Innsbruck, Austria.

Shafqat, K., Jones, D. P., Langford, R. M. & Kyriacou, P. A.view all authors (2006). Filtering techniques for the removal of ventilator artefact in oesophageal pulse oximetry. Medical & Biological Engineering & Computing, 44(8), pp. 729-737. doi: 10.1007/s11517-006-0089-2

Shafqat, K., Kyriacou, P. A., Langford, R. M. & Jones, D. P.view all authors (2004). FIR Filter Design for Removal of Ventilator Artefact in Oesophageal Photoplethysmographic Signals. Paper presented at the The X Mediterranean Conference on Medical and Biological Engineering and Computing (MEDICON 2004), 31 Jul-04 Aug 2004, Naples, Italy.

Shafqat, K., Kyriacou, P. A., Langford, R. M. & Jones, D. P.view all authors (2004). Multirate Processing for Removal of Ventilator Artefact in Oesophageal PPG Signals. Paper presented at the Annual National Conference of the Institute of Physics and Engineering in Medicine (IPEM), 6-8 Sep 2004, York, UK.