Pulmonary capillary wedge pressure

Pulmonary capillary wedge pressure is the most commonly used and most important monitoring indicator for clinical hemodynamic monitoring. Also known as pulmonary wedge pressure (PAWP). Pulmonary wedge pressure measurement is usually performed by floating the Swan-Ganz balloon floating catheter and wedged into the pulmonary arterioles to block the forward blood flow. The pressure measured at the tip of the catheter is the pulmonary artery. Wedge pressure (PAWP). Basic Information Specialist Category: Respiratory Examination Category: Other Inspections Applicable gender: whether men and women apply fasting: not fasting Analysis results: Below normal: Its value Normal value: Pulmonary wedge pressure: 6-12mmHg Above normal: When the value is > 2.67 kPa (20 mmHg), it indicates that the left ventricular function is mildly reduced, but it should be treated with fluid restriction. >3.33~4.0kPa (25~30mmHg), suggesting that the left heart function is severely incomplete, and there is a possibility of pulmonary edema. negative: Positive: Tips: Inappropriate people: severe arrhythmia; bacterial endocarditis or endarteritis; cardiac bundle branch block, especially complete left bundle branch block; severe pulmonary hypertension; severe bleeding tendency; There are wall thrombi in the heart and large blood vessels; those with suspected ventricular aneurysm and no surgical conditions; those who have recently implanted pacing catheters. Normal value Pulmonary arterial wedge compression (PAWP) pulmonary artery pressure or pulmonary capillary wedge pressure monitoring: normal value 6 ~ 12mmHg. Clinical significance Pulmonary wedge pressure can reflect left ventricular filling pressure and can be used to judge left ventricular function. Patients with hemorrhagic shock, if PCWP is reduced, suggest that blood volume should be supplemented. Patients with cardiogenic shock, if PCWP is elevated, suggest left heart failure or pulmonary edema. Pulmonary wedge pressure or pulmonary capillary wedge pressure is a reliable indicator of left heart function and its preload. The normal value is 1.60~2.40kPa (12~18mmHg). When the value is > 2.67 kPa (20 mmHg), it indicates that the left ventricular function is mildly reduced, but it should be treated with fluid restriction. >3.33~4.0kPa (25~30mmHg), suggesting that the left heart function is severely incomplete, and there is a possibility of pulmonary edema. When the value is <1.07 kPa (8 mmHg), the output of the concomitant heart is lowered, and the peripheral circulation is disordered, indicating that the blood volume is insufficient. Increased PAWP is seen in left ventricular dysfunction and mitral valve disease. Abnormal result (1) Acute myocardial infarction with shock; (2) Severe hypotension with unknown causes; (3) Multiple organ dysfunction; (4) pulmonary hypertension; (5) Low cardiac output syndrome; (6) Patients with hemodynamic instability who need to be maintained with cardiotonic drugs or IABP. Need to check the crowd: patients with myocardial infarction with shock, severe hypotension, pulmonary hypertension and other symptoms. Precautions Forbidden before examination: Pay attention to normal eating habits and pay attention to personal hygiene. Requirements for inspection: The examination is traumatic, and care should be taken to prevent infection. Inspection process Measurement methods: Pulmonary wedge pressure measurement is usually performed by floating the blood flow through the Swan-Ganz balloon floating catheter and wedged into the pulmonary arterioles to block the forward blood flow. The pressure measured at the tip of the catheter is Pulmonary wedge pressure (PAWP). When the pulmonary arterioles are blocked by wedges, the blood in the blocked pulmonary arterioles and the corresponding pulmonary venules is stagnant, becoming a static blood flow column with equal internal pressure. Due to large pulmonary venous blood flow resistance Ignore, so PAWP is equal to pulmonary venous pressure, ie left atrial pressure. Not suitable for the crowd Inappropriate crowd: (1) severe arrhythmia; (b) bacterial endocarditis or endarteritis; (3) Cardiac bundle branch block, especially complete left bundle branch block; (4) severe pulmonary hypertension; (5) Severe bleeding tendency; (6) There are wall thrombi in the heart and large blood vessels; (7) Those who have suspected ventricular aneurysm and do not have surgical conditions; (8) Those who have recently implanted pacing catheters. Adverse reactions and risks Nothing.

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