Practice, skills and experience with the Pinard stethoscope for intrapartum Foetal monitoring: Focus group interviews with Norwegian midwives.

OBJECTIVE: In most high-income countries, the cardiotocography and handheld Doppler device have replaced the Pinard stethoscope for intrapartum foetal monitoring. As a result, the skills required to use the Pinard are rapidly disappearing from midwifery. The aim of this study was thus to illuminate the knowledge before it is lost, by exploring the practice, skills and experience of Norwegian midwives familiar with the Pinard for intrapartum foetal monitoring. We included midwives who still regularly use the Pinard in their current practice in a variety of birth settings, and those who used the Pinard in the era prior to the introduction of the CTG. DESIGN: This study followed a qualitative descriptive design based on mainly focus group interviews, but also including one individual interview. The interviews explored the participants` perspective on their practice, skills and experience regarding the use of the Pinard for intrapartum foetal monitoring. Reflexive thematic analysis captured common patterns across the data, and contextualism was used as research paradigm. SETTING AND PARTICIPANTS: In total, 21 midwives with experience using the Pinard for intrapartum foetal monitoring were interviewed. The midwives were either retired and had experience using the Pinard from before the CTG became widespread; worked in an alongside midwifery unit that only oversees low-risk births; or worked in an obstetric unit in a university hospital with an active policy of using the Pinard for intrapartum foetal monitoring. FINDINGS: The analysis resulted in four main themes: "Practice and experience with the Pinard are related to context", "Skills with the Pinard come with work experience", "The Pinard reveals certain characteristics of foetal sound" and "Midwives` experience with the benefits of using the Pinard". The midwives considered the context for using the Pinard for intrapartum foetal monitoring relevant. The e availability of technology and applicable situations for using the Pinard influenced how and when they use the Pinard. They further underpinned training and work experience as important for feeling secure when using the Pinard, and this experience made them recognize normal and abnormal foetal sounds. Defining and characterizing these sounds appeared difficult for the midwives, however, and they hesitated and imitated the sound. The midwives felt that the Pinard is beneficial for both the labouring woman and the midwife, as the Pinard's features bring them closer to the labouring woman and help calm the birth suite. They also felt that the Pinard adds further information about the birth and birth process, such as foetal lie, rotation and descent. KEYCONCLUSIONS: Norwegian midwives' practice, and experiences in using the Pinard for intrapartum foetal monitoring are connected to context as technological development and applicable situations. The midwives explained that knowledge obtained through experience gives them skills to differentiate between normal and abnormal foetal sound characteristics, though they found it difficult to define the characteristics themselves. Using the Pinard stethoscope during birth calms the birth suite and brings the midwife closer to the labouring woman.

Akarnan: The Stethoscope and Making of Modern Ayurveda, Bengal, c. 1894-1952.

The histories of modern medical technologies have largely been studied exclusively within the biomedical context. Yet historians of medicine have increasingly demonstrated that a number of non-biomedical therapeutic traditions-Ayurvedic and Chinese medicine to name only two-have attained their own distinctive modernity. How has the incorporation of various medical technologies affected these neo-traditional medicines? What is the relationship between technologies and the body knowledge in non-biomedical therapeutics? Do shared technologies such as the stethoscope reveal the same bodily facts in biomedical and Ayurvedic contexts? These are some of the questions explored in this article by focusing on the uptake of the stethoscope in modern Ayurvedic medicine in Bengal. In the process the article also describes the emergence of a new sonic body in modern Ayurveda.

An alternative noninvasive technique for the treatment of iatrogenic femoral pseudoaneurysms: stethoscope-guided compression.

OBJECTIVE: latrogenic femoral pseudoaneurysm is a well-known vascular access site complication. Many invasive and noninvasive techniques have been proposed for the management of this relatively common complication. In this study, we aimed to evaluate efficiency and safety of stethoscope-guided compression as a novel noninvasive technique in the femoral pseudoaneurysm treatment. METHODS AND RESULTS: We prospectively included 29 consecutive patients with the diagnosis of femoral pseudoaneurysm who underwent coronary angiography. Patients with a clinical suspicion of femoral pseudoaneurysm were referred to colour Doppler ultrasound evaluation. The adult (large) side of the stethoscope was used to determine the location where the bruit was best heard. Then compression with the paediatric (small) side of the stethoscope was applied until the bruit could no longer be heard and compression was maintained for at least two sessions. Once the bruit disappeared, a 12-hour bed rest with external elastic compression was advised to the patients, in order to prevent disintegration of newly formed thrombosis. Mean pseudoaneurysm size was 1.7 +/- 0.4 cmx 3.0 +/- 0.9 cm and the mean duration of compression was 36.2 +/- 8.5 minutes.Twenty-six (89.6%) of these 29 patients were successfully treated with stethoscope-guided compression. In 18 patients (62%), the pseuodoaneurysms were successfully closed after 2 sessions of 15-minute compression. No severe complication was observed. CONCLUSION: Stethoscope-guided compression of femoral pseudoaneurysms is a safe and effective novel technique which requires less equipment and expertise than other contemporary methods.

Cross your heart: Some historical comments about fibrinous pericarditis.

This article briefly describes the origin of one of the more common (food-related) pathologic terms--"bread and butter pericarditis." The eminent French physician, Laennec, the inventor of the stethoscope amongst several other important medical contributions, can be credited for having coined the term that is still in common usage amongst pathologists.

Modeling sound transmission through the pulmonary system and chest with application to diagnosis of a collapsed lung.

A theoretical and experimental study was undertaken to examine the feasibility of using audible-frequency vibro-acoustic waves for diagnosis of pneumothorax, a collapsed lung. The hypothesis was that the acoustic response of the chest to external excitation would change with this condition. In experimental canine studies, external acoustic energy was introduced into the trachea via an endotracheal tube. For the control (nonpneumothorax) state, it is hypothesized that sound waves primarily travel through the airways, couple to the lung parenchyma, and then are transmitted directly to the chest wall. In contradistinction, when a pneumothorax is present the intervening air presents an added barrier to efficient acoustic energy transfer. Theoretical models of sound transmission through the pulmonary system and chest region to the chest wall surface are developed to more clearly understand the mechanisms of intensity loss when a pneumothorax is present, relative to a baseline case. These models predict significant decreases in acoustic transmission strength when a pneumothorax is present, in qualitative agreement with experimental measurements. Development of the models, their extension via finite element analysis, and comparisons with experimental canine studies are reviewed.

Does the Esophageal Stethoscope Inserted into the Reinforced Endotracheal Tube Decrease the Incedence of Nasal Bleeding following Nasotracheal Intubation? / 대한마취과학회지

BACKGROUND: Conventional nasotracheal intubation is commonly associated with injury to the passage tissues, such as the mucosal lining of the turbinates. Nasal polyp, teared mucosa and blood clots are potentially hazardous, since it lodge in a bronchus or obstruct a tracheal tube. So atraumatic intubation is very important point during nasotracheal intubation. METHODS: Fourty patients were divided into two groups, Mallinckrodt reinforced tube(n=20) and esophageal stethoscope inserted into the Mallinckrodt reinforced tube(n=20). The esophageal stethoscope was inserted into the Mallinckrodt reinforced tube until the distal end of the esophageal stethoscope reached about 5 mm beyond the distal end of the Mallinckrodt tube. The esophageal stethoscope was inflated using an air-filled syringe through a three-way stopcock. After defasciculating dose of pancuronium 0.5~1 mg intravenously, the patients were given thiopental 4~5 mg/kg, succinylcholine 1~2 mg/kg and lidocaine 1.5 mg/kg with 100% oxygen ventilation via face mask. After lubrication of the appropriate tracheal tube with jelly, it was gently advanced beyond the nasopharynx. The tube tip was manipulated into the larynx with the aid of a Magill intubating forceps. The incidence of epistaxis was compared between the two groups. RESULTS: The esophageal stethoscope inserted into the reinforced tube group had a significantly lower incidence of nasal bleeding than reinforced tube only (1/20 vs 18/20 : P<0.01). CONCLUSIONS: The esophageal stethoscope inserted into the reinforced endotracheal tube helps to minimize nasal bleeding during nasotracheal intubation.