Chữ viết tắt: RAP = áp lực tâm nhĩ phải, CVP = áp lực tĩnh mạch trung ương; RVP = áp lực tâm thất phải, PAS = động mạch phổi tâm thu, PAD = động mạch phổi tâm trương; PCWP = áp suất thùy phổi mao mạch; CO = cung lượng tim; CI = cadiac đầu vào; MAP = có nghĩa là áp lực động mạch, | M o 438 TABLE 20-9 Continued Determination Derivation Normal O2 consumption CaO2 - CvO2 X CO x 10 180-280 mL min Qs Qt shunt fraction CcO2 - CvO2 X CO x 10 CcO2 - CvO2 ICP Measured 0-20 mmHg CPP MAP - ICP keep 70 mmHg Abbreviations RAP right atrial pressures CVP central venous pressure RVP right ventricular pressure PAS pulmonary artery systolic PAD pulmonary artery diastolic PCWP pulmonary capillary wedge pressure CO cardiac output CI cadiac input MAP mean arterial pressure MPAP mean pulmonary artery pressure SVR systemic vascular resistance PVR pulmonary vascular resistance ICP intracranial pressure CPP cerebral perfusion pressure BSA body surface area DBP diastolic blood pressure SBP systolic blood pressure FiO2 inhaled O2 Hgb hemoglobin SaO2 arterial oxygen SvO2 mixed venous oxygen saturation Qs volume of shunted blood ie blood shunted past nonventilated alveoli not participating in gas exchange Qt total cardiac output CCO2 O2 content of alveolar-capillary blood CVO2 mixed venous O2 content of pulmonary artery blood. 439 TABLE 20-10 Guidelines for Adult Critical Care Drug Infusions Drug Dilution Final Concentration Flow Rate mL h Usual Dose Range Amrinone Inocor 500 mg 250 mL 150 mL PSS 100 mL drug PSS only 2 mg mL I500 gg min 45 1000 gg min 30 750 gg min 500 gg min 15 350 I g min LD gg kg MD 5-20 gg kg min Diltiazem Cardizem 125 mg 125 mL 100 mL diluent 25 mL drug D5W or PSS 1 mg mL 5 mg h 5 10 mg h 10 15 mg h 15 Bolus mg kg over 2 min may give second bolus mg kg 15 min after initial bolus MD 5-15 mg h Dobutamine Dobutrex 500 mg 250 mL 2000 gg mL 1500 gg min 45 gg kg min continued o M o 440 TABLE 20-10 Continued Drug Dilution Final Concentration Flow Rate mL h Usual Dose Range Dobutamine continued D5W or PSS 1250 gg min 1000 gg min 30 750 gg min 500 gg min 15 250 gg min Dopamine 400 mg 250 mL D5W or PSS 1600 gg mL 1400 gg min 1200 gg min 45 1000 g min 800 gg min 30 600 g min 400 gg min 15 200 g
