An alternative approach for continuous monitoring of heart and breath sounds in pediatric patients


Dileep Kumar, FCPS, Summaiya Ali, FCPS, Fauzia Anis Khan, FCPS, FRCA, Muhammad Suleman, FCPS
Department of Anesthesia, The Aga Khan University, Stadium Road, P. O. Box 3500, Karachi, (Pakistan)

Correspondence: Dr Dileep Kumar, FCPS, Assistant Professor,
The Aga Khan University, Stadium Road, P. O. Box 3500, Karachi, (Pakistan)
Email: dileep.kumar@aku.edu; dkhiloi@gmail.com

Received: 30 December 2019;
Reviewed & Accepted: 31 December 2019

Citation: Kumar D, Ali S, Khan FA, Suleman M. An alternative approach for continuous monitoring of heart and breath sounds in pediatric patients. Anaesth pain & intensive care 2019;23(4):405-406.
DOI: 10.35975/apic.v23i4.1180


Anesthetic management in neonates, infants and young children is always a challenge.  Both esophageal and precordial stethoscopes are used for continuous monitoring of heart and breath sounds in this age group.1 Recent (2018) publication of Standards for Safe Practice of Anesthesia by World Health Organization-World Federation of Societies of Anesthesiologists (WHO-WFSA) have also recommended monitoring with a precordial or esophageal stethoscope.2 By using  an esophageal stethoscope both  heart and breath sounds can be  continuously monitored and any obstruction of endotracheal tube (ETT) can be readily detected. However, the detection of one lung ventilation due to incidental endobronchial ETT placement during surgical positioning and tissue handling may be difficult. Complications of esophageal stethoscope placement have been reported e.g. incidental tracheal and bronchial insertion resulting in hypoxia, hoarseness, oropharyngeal trauma or bleeding.3
Precordial stethoscope on the other hand is a relatively safe, non-invasive and inexpensive alternative to esophageal stethoscope. It is usually fixed on the chest wall to the left of lower part of sternum in order to auscultate both the heart and breath sounds. However, it’s applicability is limited since it is easily displaced and its contact with the skin may require frequent refixing during surgery interfering with sterility.  The current practice for the fixation of precordial stethoscope varies among anesthesiologists as there is no standard recommendation.
We have used Self Adhesive Fabric Tape (Mefix) in our pediatric patients for the fixation of precordial stethoscope as shown in Figure 1. We suggest the following approach to fix the precordial stethoscope. Hold stethoscope on a site at which heart and breath sound are loudly audible and apply one piece of Mefix of 10´10 cm to secure the stethoscope. Mefix fixes the edges of precordial stethoscope precisely and ensures firm contact with the patient’s skin. The usual position for the stethoscope is the 5th intercostal space (Figure 1) medial to the left nipple however, position can be changed according to the nature of surgery and clear audibility of heart and breath sounds. Mefix is gentle to the skin and it is relatively cheap and usually readily available in the operating rooms.
This approach is easy to use and it will reassure the patient’s safety in limited resource countries by providing uninterrupted and reliable monitoring of heart and breath sounds during surgical anesthesia and transportation.

Key words: Stethoscope; Pediatric; Cardiorespiratory; Breath sound; Anesthesia

REFERENCES
  1. Watson A, Virsam A. Survey of the use of oesophageal and precordial stethoscopes in current paediatric anaesthetic practice. Paediatr Anesth 2001;11:437-442. [PubMed] DOI: 1046/j.1460-9592.2001.00698.x
  2. Gelb AW, Morriss WW, Johnson W, Merry AF. World Health Organization-World Federation of Societies of Anaesthesiologists (WHO-WFSA) International Standards for a Safe Practice of Anesthesia. Can J Anaesth 2018;65(6):698–708. [PubMed] DOI: 1007/s12630-018-1111-5
  3. Cho K, Kim M, Lee W, Lee JH, Lim SH, Lee KM, et al. The oropharyngeal bleeding after esophageal stethoscope insertion –A Case Report. Anesth Pain Med 2016;11:104-108. [Free full text] DOI: 17085/apm.2016.11.1.104
A15-Fig
Figure-I Shows stethoscope and Mefix 10´10 fixed in 5th intercostal space for lower abdominal surgery and in the left axilla for contralateral thoracic surgery.

Authors Contribution:
  1. Dileep Kumar: Concept, Literature search, Clinical conduct, Proof reading, Submission.
  2. Summaiya Ali: Clinical conduct, Initial write up, Literature search
  3. Fauzia Khan: Clinical conduct, Literature search, Draft review.
  4. Muhammad Suleman: Clinical conduct, Literature search, Draft revision. 
Grant Support & Financial Disclosure & Conflict of Interest: None