As the tricuspid atresia comes with patent foramen ovale or ASD

As the tricuspid atresia comes with patent foramen ovale or ASD , then if on Glenn shunt surgery , the blood doesn’t reach into right atrium through SVC, but there is still possibility to reach there from left atrium through ASD and does it cause right axis deviation in ECG after surgery ?

In cases of tricuspid atresia, where the tricuspid valve doesn’t form properly, the right ventricle doesn’t develop properly either. This condition often leads to other structural defects such as an atrial septal defect (ASD) or a patent foramen ovale (PFO). These defects allow blood to bypass the poorly functioning right ventricle and reach the lungs for oxygenation.

Glenn shunt surgery, also known as a superior cavopulmonary anastomosis, is a palliative procedure commonly performed in patients with complex congenital heart defects like tricuspid atresia. During this surgery, the superior vena cava (SVC) is connected directly to the pulmonary artery, bypassing the right atrium and ventricle altogether.

If there is an ASD or PFO present, blood from the left atrium can still flow into the right atrium, although it’s typically reduced compared to pre-surgery levels. However, the primary flow of deoxygenated blood to the lungs is redirected through the Glenn shunt.

Regarding your question about ECG changes after Glenn shunt surgery, it’s important to note that ECG findings can vary depending on individual patient factors, the specific surgical approach, and any pre-existing cardiac abnormalities. While right axis deviation can occur in some cases due to the altered cardiac anatomy and physiology, it’s not a universal finding. Other factors such as the presence of pulmonary hypertension or right ventricular hypertrophy may also influence ECG changes post-surgery.

The management and assessment of ECG changes post-Glenn shunt surgery would typically be part of the ongoing care provided by the medical team overseeing the patient’s cardiac condition. They would monitor for any changes in ECG findings and correlate them with the patient’s clinical status.