Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Pressure monitoring during

One of the UK manufacturers of nifedipine notes that there is a theoretical possibility that levels of nifedipine may be increased in the presence of valproate. The US manufacturer recommends blood pressure monitoring during concurrent use and also suggests that a reduction in the dose of nifedipine should be considered. ... [Pg.876]

Variants of TVA are differential condensation TVA [903] and sub-ambient TVA or SATVA [910, 938]. In SATVA the condensable gases and volatile liquids are further fractionated volatile components are collected in gas cells and less volatile liquid fractions are separated and characterised by GC-MS. SATVA consists in the slow, controlled, distillation of the volatile products from the -196°C trap (where they have been collected) as it is heated up to room temperature. As they distil, MS or IR identifies the volatiles and at the same time they are collected in narrow fractions for further analysis. Continuous pressure monitoring during distillation is recorded as a SATVA curve [939]. McGill et al [940,941] have indicated that the very simple technique of trap-to-trap distillation of trace amounts of liquid-nitrogen condensable volatiles can be used for qualitative... [Pg.280]

An expander emergeney trip valve, eapable of elosing in less than one-half seeond, must be installed elose to the expander inlet flange. A 60-80 mesh sereen, differential pressure monitor, and shutdown must be installed between the trip valve and the expander inlet. Additionally, it is highly reeommended that a 40-60 mesh sereen be installed upstream of the eompressor inlet for use during the initial startup period. [Pg.276]

AMPHOTERICIN B. Fever (sometimes with shaking chills) may occur within 15 to 20 minutes of initiation of the treatment regimen. It is important to monitor the patient s temperature, pulse, respirations, and blood pressure carefully during the first 30 minutes to 1 hour of treatment. The nurse should monitor vital signs every 2 to 4 hours during therapy, depending on the patient s condition. [Pg.135]

ADMINISTERING HRETYLIUM. The nurse monitors cardiac rhythm and blood pressure continuously during administration. Hypotension and postural hypotension occur in about 50% of die patients receiving bretylium. If systolic pressure is less than 75 mm Hg, the nurse should notify the primary health care provider. The patient is kept supine until tolerance of postural hypotension develops. The nurse instructs the patient to change position slowly. Most individuals adjust to blood pressure changes within a few days. [Pg.377]

The recommended technique for the determination of oxime carbamates and their metabolites by HPLC/MS and HPLC/MS/MS is positive ESI. Electrospray is a soft ionization technique and is suitable for thermally labile compounds. Ions are produced in the liquid phase at quasi-ambient temperature and atmospheric pressure, thus leaving the fragile pesticides intact. For oxime carbamates, the molecular adducts that can be monitored during HPLC/MS analysis with electrospray in positive mode are [M- -H]+, [M- -Na]+, or [M- -NH4]+, depending on the nature of mobile phase used. ... [Pg.1148]

Blood pressure and serum creatinine (SCr) should be assessed prior to beginning cyclosporine therapy to obtain accurate baselines, and should be reassessed biweekly once therapy is started for at least the first 12 weeks of therapy (until values stabilize), and then closely monitored during therapy. If SCr increases to 30% above the patient s baseline, the cyclosporine dosage needs to be decreased and SCr rechecked in a month. If the SCr is still above 30% of the patient s baseline, cyclosporine should be discontinued and only resumed when the SCr returns to within 10% of the patient s baseline. Cyclosporine should also be discontinued for inadequate response after 3 months use at the maximum dose.10,36... [Pg.956]

Removal of dichloromethane (CH2CI2) in the final step was performed by the checkers using a rotary evaporator. The pressure was monitored during evaporation and was not allowed to drop below 100 mm. In this fashion the same yield of material was obtained as reported. [Pg.158]

Hypotension Patients may develop sudden, severe hypotension after a single dose, whether given IV or IM. Therefore, patients receiving the drug should be supine monitor blood pressure closely during drug administration and several times thereafter until the blood pressure is stable. Have equipment for emergency resuscitation readily available. If pentamidine is administered IV, infuse over 60 minutes. [Pg.1916]

Blood pressure and heart rate should be continuously monitored during esmolol therapy... [Pg.456]

Blood pressure and ECG will be continuously monitored during therapy... [Pg.611]

The view-cell reactor is made of titanium and has two sapphire windows, a gas inlet valve and an outlet valve, as shown in Figure 3. The view cell is interfaced with a pressure transducer, a thermocouple, and a pressure relief valve. The pressure and temperature are computer-monitored during the reaction. 0.6 ml of 50 wt% H2O2/H2O (10.41 mmoles), 0.20ml of pyridine (2.47 mmoles), or some other base, was dissolved in 5 ml of acetonitrile or methanol, and was added to the reactor. 2.2 ml of supercritical CO2 was charged after lOOmg of propylene (2.38 mmoles) had been added to the reactor. The reactor was heated with a band heater at 40 - 70°C for 3, 6, 12, and 24 hr reaction periods. Following a batch conversion experiment, the amounts of products formed were determined by GC and GC/MS. [Pg.451]

I1M isotherms of amphiphile monolayers on aqueous subphase have been used to determine occupied molecular areas (Am[,i) and other (implied) structural properties. The area of the monolayer can be monitored during film transfer to obtain information on film structure. An example is seen in Figure 3.5.12 (10) for a DDAB mono-layer, sustained at a surface pressure of 20 mN m on a K2PtCl4 subphase. A uniform transfer is demonstrated over 10 dip cycles (average transfer of 1.03), and a Y-type film is evident from the same transfer for both up and down portions of... [Pg.256]

The pressure prohle during the sterilization cycle should be monitored and compared with the theoretical pressure calculated from sterilization temperatures. [Pg.290]

Study determined the compact throughput, compact density, and fines (not compacted during vacuum deaeration) when using a new equipment feed system design. The parameters controlled and monitored during the compaction process were vacuum deaeration pressure, roll pressure, roll and screw speeds, room temperature, and humidity. [Pg.242]

Rhodium carbonyl chemistry was monitored during the course of a run by attaching a high-pressure, heated IR cell to the autoclave. Cell design was similar to that reported by Noack (14). Sodium chloride plates were used. [Pg.250]


See other pages where Pressure monitoring during is mentioned: [Pg.313]    [Pg.483]    [Pg.469]    [Pg.24]    [Pg.112]    [Pg.29]    [Pg.110]    [Pg.110]    [Pg.313]    [Pg.483]    [Pg.469]    [Pg.24]    [Pg.112]    [Pg.29]    [Pg.110]    [Pg.110]    [Pg.283]    [Pg.230]    [Pg.105]    [Pg.426]    [Pg.15]    [Pg.1516]    [Pg.532]    [Pg.43]    [Pg.120]    [Pg.307]    [Pg.188]    [Pg.316]    [Pg.87]    [Pg.222]    [Pg.166]    [Pg.99]    [Pg.359]    [Pg.150]    [Pg.282]    [Pg.223]    [Pg.812]    [Pg.260]    [Pg.390]   


SEARCH



Pressure monitoring during injection

© 2024 chempedia.info