Echocardiographic assessment of oculocardiac reflex in black Bengal goats

Title: Echocardiographic assessment of oculocardiac reflex in black Bengal goats

Authors: S Jegaveera-Pandian and Pankaj Kumar

Source: Ruminant Science (2016)-5(2):293-296.

Cite this reference as: Jegaveera-Pandian S and Kumar Pankaj (2016). Echocardiographic assessment of oculocardiac reflex in black Bengal goats. Ruminant Science 5(2):293-296.

Abstract

To study the effect of OCR on the various cardiac parameters, OCR was induced in 26 healthy adult, nonpregnant Black Bengal goats which were subsequently underwent two-dimensional right parasternal echocardiography in standing position. Left ventricular parameters were measured by electronic callipers and the indices were calculated using in-built software. Data were collected and analysed. A mean reduction of 18.88% in heart rate and 6.78% in cardiac output were noticed under the influence of OCR. Other left ventricular parameters were insignificantly influenced by the reflex. Although there were nonsignificant changes in the end diastolic diameter (EDD), end systolic diameter (ESD), end systolic volume (ESV), end diastolic volume (EDV), mean systolic ejection rate (MSER) and mean velocity of circumferential fibre shortening (mVCF), but reduction in heart rate (HR) predominantly influenced the cardiac performance.

 

References

Bhargava D, Thomas T, Chakravorty N and Dutt A (2014). Trigeminocardiac Reflex: A reappraisal with relevance to maxillofacial surgery. Journal of Oral and Maxillofacial Surgery 13:373-377.

Devakumari S and Vijhayapriya T (2013). Trigemino-cardiac reflex and its importance in maxillofacial surgery-A review. IOSR Journal of Dental and Medical Sciences 12(2): 07-11

Cowley Jr AW and Guyton AC (1971). Heart rate as a determinant of cardiac output in dogs with arteriovenous fistula. American Journal of Cardiology 28:321-325.

Ghaffari MS, Marjani M and Masoudifard M (2009). Oculocardiac reflex induced by zygomatic arch fracture in a crossbreed dog. Journal of Veterinary Cardiology 11:67-69.

Karliner JS, Gault JH, Eckberg D, Mullins CB and Ross Jr J (1971). Mean velocity of fiber shortening: A simplified measure of left ventricular myocardial contractility. Circulation 44:323-333.

Khurana I, Sharma R and Khurana AK (2006). Experimental study of oculocardiac reflex (OCR) with graded stimuli. Indian Journal of Physiology and Pharmacology 50:152-156.

Leroux AA, Sandersen CF, Deleuze S, Salciccia A, Amory H and Monnen ML (2012). Two-dimensional and M-mode echocardiographic reference values in healthy adult Sannen goats. Veterinary Record 170: 154-159.

Potter TJ, Hallowell GD and Aldridge B (2012). Head and ocular surgery in farm animals. In Practice 34:518-522.

Puri AS, Thiex R, Zarzour H, Rahbar R and Orbach DB (2011). Trigeminocardiac Reflex in a child during pre-onyx DMSO injection for juvenile nasopharyngeal angiofibroma embolization: A case report. Interventional Neuroradiology 17:13-16.

Singh J, Roy S, Mukherjee P, Konar D, Konar A and Hazra S (2010). Influence of topical anaesthetics on oculocardiac reflex and corneal healing in rabbits. International Journal of Ophthalmology 3(1):14-18.

Steininger K, Berli SJ, Jud R and Schwarzwald CC (2011). Echocardiography in Sannen goats: Normal findings, reference intervals in awake goats, and the effect of general anaesthesia. Schweiz Arch Tierheilkd 153:553-564.

Teichholz LE, Cohen MV, Sonnenblick EH and Gorlin R (1974). Study of left ventricular geometry and function by B-scan ultrasonography in patients with and without asynergy. New England Journal of Medicine 291:1220-1226

Vartner SF and Boettcher DH (1978). Regulation of cardiac output by stroke volume and heart rate in conscious dogs. Circulation Research 42:557-561.

Vasudev S and Reddy S (2015). Trigeminocardiac reflex during orbital floor reconstruction: A case report. Journal of Oral and Maxillofacial Surgery 14:S32-S37.

Zhang K, Gu E and Lu J (2008). Setting up a heart rate alarm limit to decrease oculocardiac reflex during strabismus surgery in children. Frontiers of Medicine in China 2:295-297.