Analysis of Frequency and Patterns of Cardiac Autonomic Neuropathy (CAN) in Haart Naive HIV Sero Positive Patients at Unth, Ituku-Ozalla, Enugu: An Application of Ewing’s & Time and Frequency Domain Method


Authors : Dr. Ndionuka Ijeoma B; Ezeala-Adikaibe Birinus; Ekenze Oluchi; Onwuekwe Ikenna; Udora Nneka

Volume/Issue : Volume 8 - 2023, Issue 4 - April

Google Scholar : https://bit.ly/43uxUln

Scribd : https://bit.ly/3H82FD7

DOI : https://doi.org/10.5281/zenodo.7855062

Abstract :  Background: Human immunodeficiency virus (HIV) can affect sensory, motor, and autonomic nerves causing neuropathy. Autonomic dysfunction develops when nerves of the autonomic nervous system are damaged by HIV. Symptoms of CAN include abnormal exerciseinduced cardiovascular performance, postural hypotension, cardiac denervation syndrome, arrhythmias, myocardial ischaemia and sudden cardiac death. Knowledge of the prevalence of CAN will promote early management of such patients and improve the general outcome.  Methods: CAN was assessed using Ewing’s battery of five cardiovascular autonomic reflex tests and short term time and frequency domain heart rate variability test on patients and control arm. Spectral analysis of the heart rate variability is a sensitive technique for measurement of cardiovascular differential assessment of parasympathetic and sympathetic components, as well as blood pressure response.  Results: The frequency of CAN was 62.0% for the subjects and 42.0% for the control, p value 0.045 using Ewing’s cardiovascular reflex test and the frequency of CAN was 28.0% for the subjects and only 6.0% for the control, p value 0.003 using short term time and frequency domain heart rate variability tests. However Ewing’s method is a more reliable test for the presence of CAN (Fig 1). Gender is an essential factor in the stage of CAN, age and gender are positive predictive factors of CAN.  Conclusion: Apart from opportunistic infections, cardiac autonomic dysfunction itself can contribute to morbidity and mortality in HIV infection.

Keywords : Cardiac Autonomic Neuropathy in HIV is Largely Unrecognized and Not Considered in the Management of HIV Positive Patients. More Focus is on Distal Peripheral Neuropathy and its Presentation. This Study Seeks to Demonstrate and Emphasize the Frequency of Cardiac Autonomic Dysfunction in HIV Infection. This Research Brings Out the Need to Screen HIV Patients for CAN Especially before Undergoing Some Invasive Procedures. The Frequency of CAN is Significantly Higher in HIV Infected Subjects than in the Non HIV Infected General Population.

 Background: Human immunodeficiency virus (HIV) can affect sensory, motor, and autonomic nerves causing neuropathy. Autonomic dysfunction develops when nerves of the autonomic nervous system are damaged by HIV. Symptoms of CAN include abnormal exerciseinduced cardiovascular performance, postural hypotension, cardiac denervation syndrome, arrhythmias, myocardial ischaemia and sudden cardiac death. Knowledge of the prevalence of CAN will promote early management of such patients and improve the general outcome.  Methods: CAN was assessed using Ewing’s battery of five cardiovascular autonomic reflex tests and short term time and frequency domain heart rate variability test on patients and control arm. Spectral analysis of the heart rate variability is a sensitive technique for measurement of cardiovascular differential assessment of parasympathetic and sympathetic components, as well as blood pressure response.  Results: The frequency of CAN was 62.0% for the subjects and 42.0% for the control, p value 0.045 using Ewing’s cardiovascular reflex test and the frequency of CAN was 28.0% for the subjects and only 6.0% for the control, p value 0.003 using short term time and frequency domain heart rate variability tests. However Ewing’s method is a more reliable test for the presence of CAN (Fig 1). Gender is an essential factor in the stage of CAN, age and gender are positive predictive factors of CAN.  Conclusion: Apart from opportunistic infections, cardiac autonomic dysfunction itself can contribute to morbidity and mortality in HIV infection.

Keywords : Cardiac Autonomic Neuropathy in HIV is Largely Unrecognized and Not Considered in the Management of HIV Positive Patients. More Focus is on Distal Peripheral Neuropathy and its Presentation. This Study Seeks to Demonstrate and Emphasize the Frequency of Cardiac Autonomic Dysfunction in HIV Infection. This Research Brings Out the Need to Screen HIV Patients for CAN Especially before Undergoing Some Invasive Procedures. The Frequency of CAN is Significantly Higher in HIV Infected Subjects than in the Non HIV Infected General Population.

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